1
|
Cherri Z, Lau K, Nellums LB, Himmels J, Deal A, McGuire E, Mounier-Jack S, Norredam M, Crawshaw A, Carter J, Seedat F, Clemente NS, Bouaddi O, Friedland JS, Edelstein M, Hargreaves S. The immune status of migrant populations in Europe and implications for vaccine-preventable disease control: a systematic review and meta-analysis. J Travel Med 2024; 31:taae033. [PMID: 38423523 DOI: 10.1093/jtm/taae033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Revised: 02/10/2024] [Accepted: 02/15/2024] [Indexed: 03/02/2024]
Abstract
BACKGROUND Ensuring vaccination coverage reaches established herd immunity thresholds (HITs) is the cornerstone of any vaccination programme. Diverse migrant populations in European countries have been associated with cases of vaccine-preventable diseases (VPDs) and outbreaks, yet it is not clear to what extent they are an under-immunized group. METHODS We did a systematic review and meta-analysis to synthesize peer-reviewed published primary research reporting data on the immune status of migrants in EU/EEA countries, the UK and Switzerland, calculating their pooled immunity coverage for measles, mumps, rubella and diphtheria using random-effects models. We searched on Web of Science, Embase, Global Health and MEDLINE (1 January 2000 to 10 June 2022), with no language restrictions. The protocol is registered with PROSPERO (CRD42018103666). FINDINGS Of 1103 abstracts screened, 62 met eligibility criteria, of which 39 were included in the meta-analysis. The meta-analysis included 75 089 migrants, predominantly from outside Europe. Pooled immunity coverage among migrant populations was well below the recommended HIT for diphtheria (n = 7, 57.4% [95% confidence interval (CI): 43.1-71.7%] I2 = 99% vs HIT 83-86%), measles (n = 21, 83.7% [95% CI: 79.2-88.2] I2 = 99% vs HIT 93-95%) and mumps (n = 8, 67.1% [95% CI: 50.6-83.6] I2 = 99% vs HIT 88-93%) and midway for rubella (n = 29, 85.6% [95% CI: 83.1-88.1%] I2 = 99% vs HIT 83-94%), with high heterogeneity across studies. INTERPRETATION Migrants in Europe are an under-immunized group for a range of important VPDs, with this study reinforcing the importance of engaging children, adolescents and adults in 'catch-up' vaccination initiatives on arrival for vaccines, doses and boosters they may have missed in their home countries. Co-designing strategies to strengthen catch-up vaccination across the life course in under-immunized groups is an important next step if we are to meet European and global targets for VPD elimination and control and ensure vaccine equity.
Collapse
Affiliation(s)
- Zeinab Cherri
- The Migrant Health Research Group, Institute for Infection and Immunity, St Georges, University of London, London, UK
| | - Karen Lau
- The Migrant Health Research Group, Institute for Infection and Immunity, St Georges, University of London, London, UK
- Department of Global Health and Development, Faculty of Public Health and Policy, London School of Hygiene and Tropical Medicine, London, UK
- Lancet Migration European Regional Hub
| | - Laura B Nellums
- Faculty of Medicine and Heath Sciences, University of Nottingham, Nottingham, UK
| | - Jan Himmels
- The Migrant Health Research Group, Institute for Infection and Immunity, St Georges, University of London, London, UK
| | - Anna Deal
- The Migrant Health Research Group, Institute for Infection and Immunity, St Georges, University of London, London, UK
- Department of Global Health and Development, Faculty of Public Health and Policy, London School of Hygiene and Tropical Medicine, London, UK
| | - Emma McGuire
- The Migrant Health Research Group, Institute for Infection and Immunity, St Georges, University of London, London, UK
| | - Sandra Mounier-Jack
- Department of Global Health and Development, Faculty of Public Health and Policy, London School of Hygiene and Tropical Medicine, London, UK
| | - Marie Norredam
- Danish Research Centre for Migration, Ethnicity and Health, Section of Health Services Research, Department of Public Health, University of Copenhagen, Denmark
- Department of Infectious Diseases, Hvidovre Hospital, University of Copenhagen, Denmark
| | - Alison Crawshaw
- The Migrant Health Research Group, Institute for Infection and Immunity, St Georges, University of London, London, UK
| | - Jessica Carter
- The Migrant Health Research Group, Institute for Infection and Immunity, St Georges, University of London, London, UK
| | - Farah Seedat
- The Migrant Health Research Group, Institute for Infection and Immunity, St Georges, University of London, London, UK
| | - Nuria Sanchez Clemente
- The Migrant Health Research Group, Institute for Infection and Immunity, St Georges, University of London, London, UK
| | - Oumnia Bouaddi
- Lancet Migration European Regional Hub
- International School of Public Health, Mohammed VI University of Sciences and Health, Casablanca, Morocco
- Mohammed VI Center for Research and Innovation, Rabat, Morocco
| | - Jon S Friedland
- Institute for Infection and Immunity, St Georges, University of London, London, UK
| | | | - Sally Hargreaves
- The Migrant Health Research Group, Institute for Infection and Immunity, St Georges, University of London, London, UK
- Lancet Migration European Regional Hub
| |
Collapse
|
2
|
Brady AM, El-Badry E, Padron-Regalado E, Escudero González NA, Joo DL, Rota PA, Crooke SN. Serosurveillance for Measles and Rubella. Vaccines (Basel) 2024; 12:816. [PMID: 39066453 PMCID: PMC11281569 DOI: 10.3390/vaccines12070816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2024] [Revised: 06/26/2024] [Accepted: 07/05/2024] [Indexed: 07/28/2024] Open
Abstract
Measles and rubella remain global health threats, despite the availability of safe and effective vaccines. Estimates of population immunity are crucial for achieving elimination goals and assessing the impact of vaccination programs, yet conducting well-designed serosurveys can be challenging, especially in resource-limited settings. In this review, we provide a comprehensive assessment of 130 measles and rubella studies published from January 2014 to January 2024. Methodologies and design aspects of serosurveys varied greatly, including sample size, assay type, and population demographics. Most studies utilized enzyme immunoassays for IgG detection. Sample sizes showed diverse sampling methods but favored convenience sampling despite its limitations. Studies spanned 59 countries, predominantly including adults, and revealed disparities in seroprevalence across demographics, regions, and notably among migrants and women. Age-related declines in antibodies were observed, particularly among infants, and correlations between vaccination status and seropositivity varied. We conclude with an outlook on measles and rubella serosurveillance, emphasizing the need for proper survey design and the advantages of standardized, multiplex serology assays.
Collapse
Affiliation(s)
| | | | | | | | | | | | - Stephen N. Crooke
- Division of Viral Diseases, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, GA 30333, USA (D.L.J.); (P.A.R.)
| |
Collapse
|
3
|
Gogoi M, Martin CA, Bird PW, Wiselka MJ, Gardener J, Ellis K, Renals V, Lewszuk AJ, Hargreaves S, Pareek M. Risk of vaccine preventable diseases in UK migrants: A serosurvey and concordance analysis. J Migr Health 2024; 9:100217. [PMID: 38455071 PMCID: PMC10918253 DOI: 10.1016/j.jmh.2024.100217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 08/03/2023] [Accepted: 02/22/2024] [Indexed: 03/09/2024] Open
Abstract
Background Vaccine preventable diseases (VPDs) such as measles and rubella cause significant morbidity and mortality globally every year. The World Health Organization (WHO), reported vaccine coverage for both measles and rubella to be 71 % in 2019, indicating an immunity gap. Migrants in the EU/EEA may be at high risk of VPDs due to under-immunisation and poor living conditions. However, there are limited data on VPD seroprotection rates amongst migrants living in the United Kingdom (UK). Methods We conducted an exploratory cross-sectional serosurvey amongst a sample of adult migrants living in Leicester, UK to: (a) determine seroprotection rates for measles, varicella zoster, and rubella in this group; (b) identify risk factors associated with seronegativity and, (c) understand if self-reported vaccine or diseases history is an effective measure of seroprotection. Participants gave a blood sample and completed a questionnaire asking basic demographic details and vaccine and disease history for the three VPDs. We summarised the data using median and interquartile range (IQR) for non-parametric continuous variables and count and percentage for categorical variables. We used logistic regression to establish predictors of seroprotection against these diseases. We examined the reliability of self-reported vaccination/disease history for prediction of seroprotection through a concordance analysis. Results 149 migrants were included in the analysis. Seroprotection rates were: varicella zoster 98 %, rubella 92.6 % and measles 89.3 %. Increasing age was associated with seroprotection (OR 1.07 95 % CI 1.01-1.13 for each year increase in age). Migrants from Africa and the Middle East (aOR 15.16 95 % CI 1.31 - 175.06) and South/East Asia and Pacific regions (aOR 15.43 95 %CI 2.38 - 100.00) are significantly more likely to be seroprotected against measles as compared to migrants from Europe and Central Asia. The proportions of migrants unsure about their vaccination and disease history combined were 53.0 % for measles; 57.7 % for rubella; 43.0 % for varicella. There was no agreement between self-reported vaccination/disease history and serostatus. Conclusion Our findings suggest lower levels of seroprotection against measles in migrants living in Leicester, UK, with younger migrants and those from Europe and Central Asia more likely to lack seroprotection. A high proportion of surveyed migrants were unaware of their vaccination/disease history and self-reported vaccine/disease was a poor predictor of seroprotection against VPDs which is important for clinical decision-making regarding catch-up vaccination in this population. Our results, although derived from a small sample, suggest that there may be gaps in seroimmunity for certain VPDs in particular migrant populations. These findings should inform future qualitative studies investigating barriers to vaccine uptake in migrants and population-level seroprevalence studies aimed at determining individualised risk profiles based on demographic and migration factors.
Collapse
Affiliation(s)
- Mayuri Gogoi
- Department of Respiratory Sciences, University of Leicester, UK
- Development Centre for Population Health, University of Leicester, UK
| | - Christopher A. Martin
- Department of Respiratory Sciences, University of Leicester, UK
- Development Centre for Population Health, University of Leicester, UK
- Department of Infection and HIV Medicine, University Hospitals of Leicester NHS Trust, Leicester, UK
| | - Paul W. Bird
- Department of Respiratory Sciences, University of Leicester, UK
- Department of Clinical Microbiology, University Hospitals of Leicester NHS Trust, Leicester, UK
| | - Martin J. Wiselka
- Department of Respiratory Sciences, University of Leicester, UK
- Department of Infection and HIV Medicine, University Hospitals of Leicester NHS Trust, Leicester, UK
| | - Judi Gardener
- Department of Clinical Microbiology, University Hospitals of Leicester NHS Trust, Leicester, UK
| | - Kate Ellis
- Department of Infection and HIV Medicine, University Hospitals of Leicester NHS Trust, Leicester, UK
| | - Valerie Renals
- Department of Infection and HIV Medicine, University Hospitals of Leicester NHS Trust, Leicester, UK
| | - Adam J. Lewszuk
- Department of Infection and HIV Medicine, University Hospitals of Leicester NHS Trust, Leicester, UK
| | - Sally Hargreaves
- Migrant Health Research Group, Institute for Infection and Immunity, St George's, University of London, London, UK
| | - Manish Pareek
- Department of Respiratory Sciences, University of Leicester, UK
- Development Centre for Population Health, University of Leicester, UK
- Department of Infection and HIV Medicine, University Hospitals of Leicester NHS Trust, Leicester, UK
| |
Collapse
|
4
|
El-Ghitany EM, Ashour A, Fekry MM, Elrewany E, Farghaly AG, Omran EA. Seroprevalence of Hepatitis A, B and C Among a Sample of Refugees in Egypt: An Exploratory Survey. J Epidemiol Glob Health 2022; 12:430-440. [PMID: 36107333 PMCID: PMC9723078 DOI: 10.1007/s44197-022-00060-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Accepted: 08/29/2022] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Estimating the prevalence of infectious diseases, including viral hepatitis, among refugees is important for evaluating their health needs and predicting the burden on the health system of the host country. This study aimed at estimating the seroprevalence of viral hepatitis among refugees in Egypt. METHODS This cross-sectional study involved a heterogeneous group of 501 refugees. Enzyme-linked immunosorbent assays were used to detect IgG antibodies against hepatitis A virus (HAV), B virus (HBV) surface antigen (anti-HBsAg), C virus (HCV), and HBV surface antigen (HBsAg). RESULTS Anti-HAV was the most prevalent marker (n = 482, 96.2%), followed by anti-HBs (n = 142, 28.3%) and HBsAg (n = 21, 4.2%), while only four refugees (0.8%) had positive anti-HCV IgG. Anti-HBs was higher in males (p < 0.05). Older refugees and non-working subjects had significantly higher seropositive rates of anti-HAV (p = 0.051 and p = 0.023, respectively), while students and those below 15 years of age had higher rates of anti-HBs (p < 0.05). Positive HBsAg results were associated with history of hepatitis (p < 0.001). Obese participants were more likely to be positive for HBsAg (p = 0.025) and anti-HBs (p < 0.05). Sudanese refugees had significantly higher rates of anti-HAV antibodies (p = 0.049), while Yemini refugees had significantly higher rates for HBsAg (p = 0.019) positivity. Residents of Dakahlia had significantly higher rates of anti-HAV (p = 0.008) and anti-HBs (p < 0.05). None of the studied risk factors was significantly associated with anti-HCV. CONCLUSION Refugees in Egypt have poor immunity against HBV with intermediate to high HBV and low HCV prevalence rates. Despite that 65% of refugees received the HAV vaccine, almost all had IgG anti-HAV, denoting previous infection.
Collapse
Affiliation(s)
- Engy Mohamed El-Ghitany
- grid.7155.60000 0001 2260 6941Department of Tropical Health, High Institute of Public Health, Alexandria University, 165 El-Horreya Avenue–El-Ibrahimia, Alexandria, Egypt
| | - Ayat Ashour
- grid.7155.60000 0001 2260 6941Department of Family Health, High Institute of Public Health, Alexandria University, Alexandria, Egypt
| | - Marwa M. Fekry
- grid.7155.60000 0001 2260 6941Department of Microbiology, High Institute of Public Health, Alexandria University, Alexandria, Egypt
| | - Ehab Elrewany
- grid.7155.60000 0001 2260 6941Department of Tropical Health, High Institute of Public Health, Alexandria University, 165 El-Horreya Avenue–El-Ibrahimia, Alexandria, Egypt
| | - Azza Galal Farghaly
- grid.7155.60000 0001 2260 6941Department of Tropical Health, High Institute of Public Health, Alexandria University, 165 El-Horreya Avenue–El-Ibrahimia, Alexandria, Egypt
| | - Eman A. Omran
- grid.7155.60000 0001 2260 6941Department of Microbiology, High Institute of Public Health, Alexandria University, Alexandria, Egypt
| |
Collapse
|
5
|
Ekezie W, Awwad S, Krauchenberg A, Karara N, Dembiński Ł, Grossman Z, del Torso S, Dornbusch HJ, Neves A, Copley S, Mazur A, Hadjipanayis A, Grechukha Y, Nohynek H, Damnjanović K, Lazić M, Papaevangelou V, Lapii F, Stein-Zamir C, Rath B. Access to Vaccination among Disadvantaged, Isolated and Difficult-to-Reach Communities in the WHO European Region: A Systematic Review. Vaccines (Basel) 2022; 10:vaccines10071038. [PMID: 35891201 PMCID: PMC9324407 DOI: 10.3390/vaccines10071038] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 05/30/2022] [Accepted: 06/14/2022] [Indexed: 01/27/2023] Open
Abstract
Vaccination has a significant impact on morbidity and mortality. High vaccination coverage rates are required to achieve herd protection against vaccine-preventable diseases. However, limited vaccine access and hesitancy among specific communities represent significant obstacles to this goal. This review provides an overview of critical factors associated with vaccination among disadvantaged groups in World Health Organisation European countries. Initial searches yielded 18,109 publications from four databases, and 104 studies from 19 out of 53 countries reporting 22 vaccine-preventable diseases were included. Nine groups representing the populations of interest were identified, and most of the studies focused on asylum seekers, refugees, migrants and deprived communities. Recall of previous vaccinations received was poor, and serology was conducted in some cases to confirm protection for those who received prior vaccinations. Vaccination coverage was lower among study populations compared to the general population or national average. Factors that influenced uptake, which presented differently at different population levels, included health service accessibility, language and vaccine literacy, including risk perception, disease severity and vaccination benefits. Strategies that could be implemented in vaccination policy and programs were also identified. Overall, interventions specific to target communities are vital to improving uptake. More innovative strategies need to be deployed to improve vaccination coverage among disadvantaged groups.
Collapse
Affiliation(s)
- Winifred Ekezie
- Vienna Vaccine Safety Initiative e.V., 10437 Berlin, Germany; (W.E.); (S.A.)
- Department of Epidemiology and Public Health, University of Nottingham, Nottingham NG5 1PB, UK
- College of Life Sciences, University of Leicester, Leicester LE5 4PW, UK
- ImmuHubs Consortium, Coordinating Entity: Vienna Vaccine Safety Initiative e.V., 10437 Berlin, Germany;
| | - Samy Awwad
- Vienna Vaccine Safety Initiative e.V., 10437 Berlin, Germany; (W.E.); (S.A.)
- ImmuHubs Consortium, Coordinating Entity: Vienna Vaccine Safety Initiative e.V., 10437 Berlin, Germany;
- Stanford University, Palo Alto, CA 94305, USA
| | - Arja Krauchenberg
- ImmuHubs Consortium, Coordinating Entity: Vienna Vaccine Safety Initiative e.V., 10437 Berlin, Germany;
- European Parents Association, 1000 Brussels, Belgium
| | - Nora Karara
- Young European Academy of Paediatrics, 1000 Brussels, Belgium;
- Evangelical Hospital Queen Elisabeth Herzberge, 10365 Berlin, Germany
| | - Łukasz Dembiński
- European Academy of Paediatrics, 1000 Brussels, Belgium; (Ł.D.); (Z.G.); (S.d.T.); (H.J.D.); (A.N.); (S.C.); (A.M.); (A.H.); (Y.G.); (V.P.); (F.L.)
- Department of Pediatric Gastroenterology and Nutrition, Medical University of Warsaw, 02-091 Warsaw, Poland
| | - Zachi Grossman
- European Academy of Paediatrics, 1000 Brussels, Belgium; (Ł.D.); (Z.G.); (S.d.T.); (H.J.D.); (A.N.); (S.C.); (A.M.); (A.H.); (Y.G.); (V.P.); (F.L.)
- Adelson School of Medicine, Ariel University, Ariel 40700, Israel
| | - Stefano del Torso
- European Academy of Paediatrics, 1000 Brussels, Belgium; (Ł.D.); (Z.G.); (S.d.T.); (H.J.D.); (A.N.); (S.C.); (A.M.); (A.H.); (Y.G.); (V.P.); (F.L.)
| | - Hans Juergen Dornbusch
- European Academy of Paediatrics, 1000 Brussels, Belgium; (Ł.D.); (Z.G.); (S.d.T.); (H.J.D.); (A.N.); (S.C.); (A.M.); (A.H.); (Y.G.); (V.P.); (F.L.)
| | - Ana Neves
- European Academy of Paediatrics, 1000 Brussels, Belgium; (Ł.D.); (Z.G.); (S.d.T.); (H.J.D.); (A.N.); (S.C.); (A.M.); (A.H.); (Y.G.); (V.P.); (F.L.)
| | - Sian Copley
- European Academy of Paediatrics, 1000 Brussels, Belgium; (Ł.D.); (Z.G.); (S.d.T.); (H.J.D.); (A.N.); (S.C.); (A.M.); (A.H.); (Y.G.); (V.P.); (F.L.)
| | - Artur Mazur
- European Academy of Paediatrics, 1000 Brussels, Belgium; (Ł.D.); (Z.G.); (S.d.T.); (H.J.D.); (A.N.); (S.C.); (A.M.); (A.H.); (Y.G.); (V.P.); (F.L.)
| | - Adamos Hadjipanayis
- European Academy of Paediatrics, 1000 Brussels, Belgium; (Ł.D.); (Z.G.); (S.d.T.); (H.J.D.); (A.N.); (S.C.); (A.M.); (A.H.); (Y.G.); (V.P.); (F.L.)
| | - Yevgenii Grechukha
- European Academy of Paediatrics, 1000 Brussels, Belgium; (Ł.D.); (Z.G.); (S.d.T.); (H.J.D.); (A.N.); (S.C.); (A.M.); (A.H.); (Y.G.); (V.P.); (F.L.)
| | - Hanna Nohynek
- Finnish Institute for Health and Welfare, FI-00271 Helsinki, Finland;
| | - Kaja Damnjanović
- Faculty of Philosophy, University of Belgrade, 11000 Beograd, Serbia;
| | - Milica Lazić
- Faculty of Philosophy, University of Novi Sad, 21000 Novi Sad, Serbia;
| | - Vana Papaevangelou
- European Academy of Paediatrics, 1000 Brussels, Belgium; (Ł.D.); (Z.G.); (S.d.T.); (H.J.D.); (A.N.); (S.C.); (A.M.); (A.H.); (Y.G.); (V.P.); (F.L.)
| | - Fedir Lapii
- European Academy of Paediatrics, 1000 Brussels, Belgium; (Ł.D.); (Z.G.); (S.d.T.); (H.J.D.); (A.N.); (S.C.); (A.M.); (A.H.); (Y.G.); (V.P.); (F.L.)
| | | | - Barbara Rath
- Vienna Vaccine Safety Initiative e.V., 10437 Berlin, Germany; (W.E.); (S.A.)
- Department of Epidemiology and Public Health, University of Nottingham, Nottingham NG5 1PB, UK
- ImmuHubs Consortium, Coordinating Entity: Vienna Vaccine Safety Initiative e.V., 10437 Berlin, Germany;
- Correspondence:
| | | |
Collapse
|
6
|
Pediatric Infectious Diseases Encountered During Wartime-Part 1: Experiences and Lessons Learned From Armed Conflict in the Modern Era. Curr Infect Dis Rep 2021; 23:27. [PMID: 34903952 PMCID: PMC8656442 DOI: 10.1007/s11908-021-00770-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/11/2021] [Indexed: 11/18/2022]
Abstract
Purpose of Review Armed conflicts occur globally, with some regions experiencing heightened instability for many years. A better understanding of the infectious disease impact on children in armed conflict will allow aid organizations to anticipate and mitigate the most serious problems. Recent Findings Armed conflicts are estimated to have caused approximately 30 million civilian deaths during the past 27 years, with two-thirds occurring in women and children. Children are extremely vulnerable to the mass population displacements, experiencing a combined loss of safety, nutrition, shelter, hygiene, and health care. Under these circumstances, the emergence and prevalence of multiple infectious diseases can result in heightened morbidity and mortality long after active conflict ceases. Summary Factors leading to increased infectious diseases in populations in crisis due to armed conflict and lessons learned from recent outbreaks are discussed in detail. Acute respiratory infections, diphtheria, measles, varicella, and cholera are a few of the more common infectious diseases that take advantage of populations displaced or disrupted by conflict. Key issues include the ability of countries or non-governmental organizations (NGOs) to keep up with basic childhood immunizations, and how rapidly disease outbreaks are recognized and addressed with disease-specific interventions.
Collapse
|
7
|
Müller F, Chandra S, Wright V, Rashid M, Redditt V. Concordance of self-reported varicella history and serology among adolescent and adult refugee patients at a primary care clinic in Toronto, Canada. Vaccine 2021; 39:6391-6397. [PMID: 34563396 DOI: 10.1016/j.vaccine.2021.09.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 09/02/2021] [Accepted: 09/08/2021] [Indexed: 10/20/2022]
Abstract
BACKGROUND Previous studies have found higher rates of varicella susceptibility among migrants from tropical regions. This study seeks to estimate the prevalence of varicella susceptibility in a cohort of newly arrived refugees and refugee claimants at a primary care clinic in Toronto and to compare patients' self-reported history of varicella infection with serologic test results. METHODS We conducted a retrospective chart review of 1888 refugee patients aged 13 years and older rostered at a specialized primary care clinic in Toronto from December 2011 to October 2017. Basic sociodemographic variables, self-reported varicella history, and varicella serologic results were examined. RESULTS Based on serologic testing, 8.5% of individuals were varicella non-immune, with highest rates of varicella susceptibility among adolescents aged 13-19 years (13.5%). All adults over age 60 were varicella immune on serology (n = 56). A positive self-reported history of varicella infection was strongly predictive of varicella immunity on serology (PPV 96.8%; 95% CI: 95.2-97.9). A self-reported history of no prior varicella infection did not correlate reliably with serologic test results (NPV 15.8%; 95% CI: 13.3-18.0). A substantial proportion of patients (34.1%) were unsure of their varicella history. CONCLUSION Identification and immunization of varicella susceptible refugee newcomers remains a health care priority. Self-reported history of varicella infection had mixed reliability as a predictor of varicella immunity.
Collapse
Affiliation(s)
- Frank Müller
- Crossroads Clinic Women's College Hospital 76 Grenville Street, Toronto ON, M5S 1B2, Canada; Department of General Practice, University Medical Center Göttingen/Georg-August-University, Humboldtallee 38, 37073 Göttingen, Germany.
| | - Shivani Chandra
- Crossroads Clinic Women's College Hospital 76 Grenville Street, Toronto ON, M5S 1B2, Canada; Women's College Hospital Institute for Health System Solutions and Virtual Care Women's College Hospital 76 Grenville Street, Toronto, ON M5S 1B2, Canada.
| | - Vanessa Wright
- Crossroads Clinic Women's College Hospital 76 Grenville Street, Toronto ON, M5S 1B2, Canada.
| | - Meb Rashid
- Crossroads Clinic Women's College Hospital 76 Grenville Street, Toronto ON, M5S 1B2, Canada; Department of Family and Community Medicine, University of Toronto, 500 University Ave, Toronto, ON M5G 1V7, Canada.
| | - Vanessa Redditt
- Crossroads Clinic Women's College Hospital 76 Grenville Street, Toronto ON, M5S 1B2, Canada; Women's College Hospital Institute for Health System Solutions and Virtual Care Women's College Hospital 76 Grenville Street, Toronto, ON M5S 1B2, Canada; Department of Family and Community Medicine, University of Toronto, 500 University Ave, Toronto, ON M5G 1V7, Canada.
| |
Collapse
|
8
|
Hvass AMF, Norredam M, Sodemann M, Wejse C. Is there a need of health assessments for resettling refugees? A cross-sectional study of 1431 refugees who arrived in Denmark between 2014 and 2018. J Migr Health 2021; 3:100044. [PMID: 34405189 PMCID: PMC8352093 DOI: 10.1016/j.jmh.2021.100044] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 12/03/2020] [Accepted: 04/10/2021] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Refugees have increased health risks due to factors related to their country of origin, the migration itself and the receiving country. Based on systematic general health assessments of newly arrived refugees, we aimed to study the characteristics with regard to background, migration and health needs. METHODS All refugees (children/adolescents and adults) arriving in Aarhus, Denmark from 1 January 2014 to 1 November 2018 were offered a general health assessment by a doctor including: medical history, a physical examination and blood samples. RESULTS A cohort of 1431 (of 1618 invited, (88.4%) participants accepted the health assessment. The most commonly found health conditions in children were vitamin D deficiency (28.3%), elevated serum-IgE (34%) and lack of immunity against vaccine-preventable diseases (measles 20.1%, polio 3.9%). In adults, vitamin D deficiency (34.6%), IgE elevation (30%), latent tuberculosis (20.3%) and symptoms of PTSD (15.9%) were most prevalent. We found participants from Southern Asia (Iran, Afghanistan and Pakistan) to be overrepresented with regard to vitamin D deficiency, vitamin B12 deficiency and symptoms of PTSD. Furthermore, we found that origin in Africa was associated with latent tuberculosis. In total, 63.8% of examined refugees had one or more health problems requiring further testing, treatment or follow-up. CONCLUSIONS A comprehensive health assessment among recently arrived refugees showed multiple health issues to address, and demonstrates the need of systematic health assessments for resettling refugees.
Collapse
Affiliation(s)
- Anne Mette F. Hvass
- Department of Infectious Diseases, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200 Aarhus N, Aarhus, Denmark
- Department of Social Medicine, Aarhus Municipality, Aarhus, Denmark
- Department of Clinical Medicine, Aarhus University, Denmark
| | - Marie Norredam
- Danish Research Centre for Migration, Ethnicity and Health, Institute of Public Health, University of Copenhagen, Øster Farimagsgade 5, 1353, Copenhagen K, Denmark
- Section for Immigrant Medicine, Department of Infectious Diseases, Hvidovre University Hospital, Denmark
| | - Morten Sodemann
- Migrant Health Clinic, Department of Infectious Diseases, Odense University Hospital
| | - Christian Wejse
- Department of Infectious Diseases, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200 Aarhus N, Aarhus, Denmark
- Department of Clinical Medicine, Aarhus University, Denmark
- Department of Public Health, Center for Global Health, Aarhus University, Bartolins Alle 4, 8000 Aarhus C, Denmark
| |
Collapse
|
9
|
Müller F, Kleinert E, Hillermann N, Simmenroth A, Hummers E, Scharff AZ, Dopfer C, Happle C, Jablonka A. Disease burden in a large cohort of asylum seekers and refugees in Germany. J Glob Health 2021; 11:04002. [PMID: 33643633 PMCID: PMC7897448 DOI: 10.7189/jogh.11.04002] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Background Currently, health care systems worldwide are challenged with providing care to an increasing number of migrants, refugees, and displaced persons. In this article, we report on disease burden and drug prescription patterns in a large refugee cohort in Germany. Methods We conducted a cross-sectional study of anonymized medical records including demographic data, diagnoses, and drug prescriptions in two refugee reception centres between 2015 and 2019. Refugees and migrants received medical assistance exclusively through the on-site clinics. Thus, this study represents all medical visits of the housed residents. Results In total, n = 15531 diagnoses from n = 4858 patients in a cohort of n = 10431 accommodated refugees were recorded. N = 11898 medications were prescribed. Overall, 29.8% of all refugees sought medical attention. Half of the patients were female (49.6%), the average age was 23.8 years (SD [standard deviation] 17.0, min 0, max 81), and 41.5% were minors (<18 years). Most patients had Middle Eastern or Northern African origin (63.9%). The largest proportion of diagnoses belonged to the ICD (International Statistical Classification of Diseases and Related Health Problems) category “R” (miscellaneous, 33.5%), followed by diseases of the respiratory system (category “J”, 16.5%), or the musculoskeletal system (category “M”, 7.1%). Non-steroidal anti-inflammatory drugs were most frequently prescribed. Conclusions This analysis in two large refugee centres in Germany shows that about one third of refugees seek medical attention upon initial arrival. Complaints are manifold, with a high prevalence of respiratory infections.
Collapse
Affiliation(s)
- Frank Müller
- Department of General Practice, University Medical Centre Goettingen, Goettingen, Germany
| | - Evelyn Kleinert
- Department of General Practice, University Medical Centre Goettingen, Goettingen, Germany
| | - Nele Hillermann
- Department of General Practice, University Medical Centre Goettingen, Goettingen, Germany
| | - Anne Simmenroth
- Department of General Practice, University Medical Centre Goettingen, Goettingen, Germany.,Department of General Practice, University Medical Centre Wuerzburg, Wuerzburg, Germany
| | - Eva Hummers
- Department of General Practice, University Medical Centre Goettingen, Goettingen, Germany
| | | | - Christian Dopfer
- Department of Paediatric Pneumology, Allergology, and Neonatology, Hannover Medical School, Hannover, Germany
| | - Christine Happle
- Department of Paediatric Pneumology, Allergology, and Neonatology, Hannover Medical School, Hannover, Germany.,German Centre for Lung Research, Biomedical Research in End Stage and Obstructive Lung Disease/ BREATH, Hannover, Germany
| | - Alexandra Jablonka
- German Centre for Infection Research (DZIF), Partner Site Hannover-Brunswick, Braunschweig, Germany.,Department of Rheumatology and Immunology, Hannover Medical School, Hannover, Germany
| |
Collapse
|
10
|
Knapp AP, Rehmus W, Chang AY. Skin diseases in displaced populations: a review of contributing factors, challenges, and approaches to care. Int J Dermatol 2020; 59:1299-1311. [PMID: 32686140 DOI: 10.1111/ijd.15063] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 06/11/2020] [Accepted: 06/19/2020] [Indexed: 01/14/2023]
Abstract
There are 70.8 million persons displaced worldwide due to war, persecution, and violence. Eighty percent of displaced persons reside in low- and middle-income countries with limited healthcare resources. Cutaneous diseases are commonly reported among displaced persons owing to numerous interrelated factors such as inadequate housing, overcrowding, food insecurity, environmental exposures, violence including torture, and breakdown of healthcare infrastructure. Diagnosis and management of these conditions, as well as an understanding of the context in which they present, is crucial to providing dermatologic care for displaced populations worldwide. Herein, we define displaced populations and, within this context, review the epidemiology of skin diseases, discuss pertinent skin conditions, examine challenges to care provision, and present approaches for improving dermatologic care. Inflammatory and communicable infectious disorders are the most common skin diseases seen in displaced populations. Other relevant conditions include skin manifestations of heat injuries, cold injuries, immersion foot syndromes, macronutrient and micronutrient deficiencies, torture, and sexual and gender-based violence. Provision of dermatologic care to displaced populations is hampered by limited diagnostic and therapeutic resources and specialist expertise. Medical screening for cutaneous disorders, context-relevant dermatology training, and telemedicine are potential tools to improve diagnosis and management of skin diseases in displaced populations.
Collapse
Affiliation(s)
- Alexia P Knapp
- Department of Dermatology, International Foundation for Dermatology Migrant Health Dermatology Working Group, HealthPartners Institute, Saint Paul, Minnesota, USA
| | - Wingfield Rehmus
- Departments of Pediatrics and Dermatology, University of British Columbia, Vancouver, BC, Canada
| | - Aileen Y Chang
- Department of Dermatology, International Foundation for Dermatology Migrant Health Dermatology Working Group, University of California, San Francisco, USA
| |
Collapse
|
11
|
Dinleyici EC, Borrow R. Meningococcal infections among refugees and immigrants: silent threats of past, present and future. Hum Vaccin Immunother 2020; 16:2781-2786. [PMID: 32347773 PMCID: PMC7746237 DOI: 10.1080/21645515.2020.1744979] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Globally, there is an increasing number of international migrants. The majority are forced displaced refugees and children unaccompanied by a caregiver, and have limited access to essential public health interventions. Routine vaccination might be interrupted or be incomplete due to conflict areas with limited public health services or a long-unplanned journey. Refugees and migrants may bring infectious disease risks to their country of destination and may be exposed to new risk factors during transit or at their destination. There are lessons learned strategies among refugees and asylum seekers in different countries (vaccination campaign during outbreak, maintain vaccination systems for refugees and medical screening and/or vaccination on arrival) against vaccine-preventable diseases – other than meningococcal infections. Since the 1980s, invasive meningococcal disease (IMD) has been reported as a critical healthcare issue in places of humanitarian crisis such as Thailand and African’s meningitis belt. Refugees and migrants are at increased risk of IMD compared with the overall population due to sero-epidemiology in their country of origin, specific characteristics of the IMD, and a number of contacts during the journey. Recently, IMD cases due to serogroups X and W have been reported and are an emerging health threat for persons arriving from Africa to refugee camps in Italy. There have been sporadic case reports of IMD due to serogroup B in Turkey; however, there has not yet been increased disease activity in this population and no outbreaks have been observed. Outbreaks of IMD in refugee camps have been and could be successfully controlled through the implementation of timely and high-coverage vaccination campaigns, and individual cases of IMD can be treated with antibiotics. Research is needed to determine the prevalence of meningococcal carriage and serogroup distribution among refugees and migrants to inform vaccine recommendations. There is no official recommendation for meningococcal vaccination of refugees. Further strategies for prevention and treatment of human immunodeficiency virus, tuberculosis and antibiotic resistance among refugees are directly related to potential prevention methods for IMD. Meningococcal vaccines have been administered only to risk groups in most host countries Thus, further strategies for the definition of new/emerging risk factors for IMD would be helpful to guide vaccine implementation for refugees and immigrants.
Collapse
Affiliation(s)
- Ener Cagri Dinleyici
- Department of Pediatrics, Eskisehir Osmangazi University Faculty of Medicine , Eskisehir, Turkey
| | - Ray Borrow
- Vaccine Evaluation Unit, Public Health England , Manchester, UK
| |
Collapse
|
12
|
Affanni P, Colucci ME, Capobianco E, Bracchi MT, Zoni R, Viani I, Caruso L, Carlone L, Arcuri C, Veronesi L. Immunity status against tetanus in young migrants: a seroprevalence study. ACTA BIO-MEDICA : ATENEI PARMENSIS 2020; 91:77-84. [PMID: 32275271 PMCID: PMC7975914 DOI: 10.23750/abm.v91i3-s.9438] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Accepted: 03/23/2020] [Indexed: 11/30/2022]
Abstract
BACKGROUND AND AIM OF THE WORK Thanks to the highly effective vaccine, tetanus became sporadic in high-income countries with well-established primary childhood immunization programs, but it is common in low-income countries. The migrants, leaving countries with poor immunization programs or where vaccinations have been interrupted, may represent a new risk group for tetanus in host countries. A seroprevalence study was conducted to estimate the immunological status against tetanus in young migrants without vaccination documentation. METHODS After a careful assessment by vaccination services of the Local Health Authority, all migrants recently arrived in Italy were included in the serosurvey. Titers of anti-tetanus toxoid were measured using a commercial ELISA kit. Subjects were stratified by age and by WHO region. Antibody titers <0.10 IU/ml were considered to be seronegative, between 0.10 and 1.00 IU/ml as intermediate protection, and >1.00 IU/ml high protection. RESULTS From January 2004 to December 2019, 2,326 blood samples were collected. Mean age was 13.9 years with no differences between WHO regions. The percentage of the subjects without protective antibodies was 22.3%, with an intermediate level was 45.2%, with high titer was 32.5%. Among migrant coming from African and Eastern Mediterranean WHO regions, the highest percentages of seronegative titers and, at the same time, the low percentages of high protective levels were found. Titers decreased with age. CONCLUSIONS The significant proportion of seronegative migrants and the decrease of protective titers increasing age, confirm the importance of the evaluation of the immunological status to employ the appropriate vaccination strategy.
Collapse
Affiliation(s)
| | | | | | | | - Roberta Zoni
- Department of Medicine and Surgery, University of Parma, Italy.
| | - Isabella Viani
- Department of Medicine and Surgery, University of Parma, Italy.
| | - Luca Caruso
- Department of Medicine and Surgery, University of Parma, Italy.
| | | | - Carlo Arcuri
- Department of Medicine and Surgery, University of Parma, Italy.
| | - Licia Veronesi
- Department of Medicine and Surgery, University of Parma, Italy.
| |
Collapse
|
13
|
Koniushevska AA, Parkhomenko TA, Sharunova MV, Kazantsev AB, Yakovenko DV. Epidemiology and features of the measles course in children during the outbreak of 2018–2019 in the city of Mariupol. REGULATORY MECHANISMS IN BIOSYSTEMS 2020. [DOI: 10.15421/022010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
In 2017, Ukraine ranked in the top three among European countries in terms of measles incidence, and ranked first in measles growth in 2018. High morbidity, mortality and development of complications make the problem of knowing features of the measles clinical course, timely diagnosis and active prevention highly relevant. The purpose of the research is to study the dynamics of the incidence and clinical features of measles in children during the outbreak of 2018–2019 in the city of Mariupol, Donetsk region. A peculiarity of the measles outbreak in 2018–2019 in Mariupol is prevalence of the disease in preschool children (60.4%), including 30.2% – those under one year of age; low vaccination rate: 52.3% of children unvaccinated; only 22.2% of children were vaccinated twice, according to the schedule. In all age groups, a moderately severe measles course prevailed (69.8%). The clinical course of measles in preschool and school age children had definitive features. Thus, Belsky–Filatov–Koplik spots were observed three times more frequently in preschool children than in schoolchildren (63.9% and 23.3%, respectively). Abdominal pain and diarrhea were only observed in children under 6 years of age (30.2%). Skin pigmentation was absent in children under one year of age and was detected in preschool and school-age children (69.8%). Skin sloughing was only observed in schoolchildren (10.4%). Severe disease course occurred in patients of all ages (29.3%), but children aged under one year and preschool children with severe disease were two times more numerous than those of the school age. Among the observed complications, the vast majority were associated with the respiratory organs: pneumonia (38.3%), subcutaneous emphysema (1.7%), bronchitis (53.2%), laryngitis (3.3%), otitis media (5%). No fatalities were observed. The city should form a commitment to immunization, restore public trust in vaccination, using all forms and means of information, and develop a program to implement the vaccination schedule into practice.
Collapse
|
14
|
Kumar GS, Pezzi C, Wien S, Mamo B, Scott K, Payton C, Urban K, Hughes S, Kennedy L, Cabanting N, Montour J, Titus M, Aguirre J, Kawasaki B, Ford R, Jentes ES. Health of Special Immigrant Visa holders from Iraq and Afghanistan after arrival into the United States using Domestic Medical Examination data, 2014-2016: A cross-sectional analysis. PLoS Med 2020; 17:e1003083. [PMID: 32231361 PMCID: PMC7108690 DOI: 10.1371/journal.pmed.1003083] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Accepted: 02/24/2020] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Since 2008, the United States has issued between 2,000 and 19,000 Special Immigrant Visas (SIV) annually, with the majority issued to applicants from Iraq and Afghanistan. SIV holders (SIVH) are applicants who were employed by, or on behalf of, the US government or the US military. There is limited information about health conditions in SIV populations to help guide US clinicians caring for SIVH. Thus, we sought to describe health characteristics of recently arrived SIVH from Iraq and Afghanistan who were seen for domestic medical examinations. METHODS AND FINDINGS This cross-sectional analysis included data from Iraqi and Afghan SIVH who received a domestic medical examination from January 2014 to December 2016. Data were gathered from state refugee health programs in seven states (California, Colorado, Illinois, Kentucky, Minnesota, New York, and Texas), one county, and one academic medical center and included 6,124 adults and 4,814 children. Data were collected for communicable diseases commonly screened for during the exam, including tuberculosis (TB), hepatitis B, hepatitis C, malaria, strongyloidiasis, schistosomiasis, other intestinal parasites, syphilis, gonorrhea, chlamydia, and human immunodeficiency virus, as well as elevated blood lead levels (EBLL). We investigated the frequency and proportion of diseases and whether there were any differences in selected disease prevalence in SIVH from Iraq compared to SIVH from Afghanistan. A majority of SIV adults were male (Iraqi 54.0%, Afghan 58.6%) and aged 18-44 (Iraqi 86.0%, Afghan 97.7%). More SIV children were male (Iraqi 56.2%, Afghan 52.2%) and aged 6-17 (Iraqi 50.2%, Afghan 40.7%). The average age of adults was 29.7 years, and the average age for children was 5.6 years. Among SIV adults, 14.4% were diagnosed with latent tuberculosis infection (LTBI), 63.5% were susceptible to hepatitis B virus (HBV) infection, and 31.0% had at least one intestinal parasite. Afghan adults were more likely to have LTBI (prevalence ratio [PR]: 2.0; 95% confidence interval [CI] 1.5-2.7) and to be infected with HBV (PR: 4.6; 95% CI 3.6-6.0) than Iraqi adults. Among SIV children, 26.7% were susceptible to HBV infection, 22.1% had at least one intestinal parasite, and 50.1% had EBLL (≥5 mcg/dL). Afghan children were more likely to have a pathogenic intestinal parasite (PR: 2.7; 95% CI 2.4-3.2) and EBLL (PR: 2.0; 95% CI 1.5-2.5) than Iraqi children. Limitations of the analysis included lack of uniform health screening data collection across all nine sites and possible misclassification by clinicians of Iraqi and Afghan SIVH as Iraqi and Afghan refugees, respectively. CONCLUSION In this analysis, we observed that 14% of SIV adults had LTBI, 27% of SIVH had at least one intestinal parasite, and about half of SIV children had EBLL. Most adults were susceptible to HBV. In general, prevalence of infection was higher for most conditions among Afghan SIVH compared to Iraqi SIVH. The Centers for Disease Control and Prevention (CDC) Guidelines for the US Domestic Medical Examination for Newly Arriving Refugees can assist state public health departments and clinicians in the care of SIVH during the domestic medical examination. Future analyses can explore other aspects of health among resettled SIV populations, including noncommunicable diseases and vaccination coverage.
Collapse
Affiliation(s)
- Gayathri S. Kumar
- Centers for Disease Control and Prevention, Division of Global Migration and Quarantine, Immigrant, Refugee, and Migrant Health Branch, Atlanta, Georgia, United States of America
- * E-mail:
| | - Clelia Pezzi
- Centers for Disease Control and Prevention, Division of Global Migration and Quarantine, Immigrant, Refugee, and Migrant Health Branch, Atlanta, Georgia, United States of America
| | - Simone Wien
- Centers for Disease Control and Prevention, Division of Global Migration and Quarantine, Immigrant, Refugee, and Migrant Health Branch, Atlanta, Georgia, United States of America
| | - Blain Mamo
- Minnesota Department of Health, Saint Paul, Minnesota, United States of America
| | - Kevin Scott
- Thomas Jefferson University, Philadelphia, Pennsylvania, United States of America
| | - Colleen Payton
- Thomas Jefferson University, Philadelphia, Pennsylvania, United States of America
| | - Kailey Urban
- Minnesota Department of Health, Saint Paul, Minnesota, United States of America
| | - Stephen Hughes
- Bureau of Tuberculosis Control, New York State Department of Health, Albany, New York, United States of America
| | - Lori Kennedy
- Colorado Department of Public Health and Environment, Disease Control and Environmental Epidemiology Division, Refugee Health Program, Denver, Colorado, United States of America
| | - Nuny Cabanting
- Office of Refugee Health, Center for Infectious Diseases, California Department of Public Health, Sacramento, California, United States of America
| | - Jessica Montour
- Texas Department of State Health Services, Austin, Texas, United States of America
| | - Melissa Titus
- Marion County Public Health Department, Indianapolis, Indiana, United States of America
| | - Jenny Aguirre
- Illinois Department of Public Health, Refugee Health Program, Chicago, Illinois, United States of America
| | - Breanna Kawasaki
- Colorado Department of Public Health and Environment, Disease Control and Environmental Epidemiology Division, Refugee Health Program, Denver, Colorado, United States of America
| | - Rebecca Ford
- University of Louisville Division of Infectious Diseases, Louisville, Kentucky, United States of America
| | - Emily S. Jentes
- Centers for Disease Control and Prevention, Division of Global Migration and Quarantine, Immigrant, Refugee, and Migrant Health Branch, Atlanta, Georgia, United States of America
| |
Collapse
|
15
|
Karadeniz A, Akduman Alaşehir E. Seroepidemiology of hepatitis viruses, measles, mumps, rubella and varicella among healthcare workers and students: Should we screen before vaccination? J Infect Public Health 2020; 13:480-484. [PMID: 32113699 DOI: 10.1016/j.jiph.2020.01.309] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 01/17/2020] [Accepted: 01/30/2020] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND Health care workers (HCWs) and students are at increased risk for blood borne infections and vaccine preventable diseases (VPDs). The aim of this study was to determine the seroprevalence of antibodies against measles, rubella, mumps, varicella zoster virus (VZV), hepatitis A and B viruses among HCWs and students and to determine whether there are differences according to gender and age group. METHODS Information about characteristics of the 1053 participants, history of disease and vaccination status were collected using a structured questionnaire. Serum samples were tested for antibodies by commercial immunoenzymatic assays. RESULTS Seropositivity rates were 57.1% for measles, 74% for mumps, 96.3% for rubella, 93.7% for VZV, 33.9% for hepatitis A virus and 92.2% for hepatitis B virus. Susceptibility rates among participants 18-26, 27-38 and >38 years of age were statistically significant for measles (46%, 18.6% and 0%; p < 0.001) and mumps (27.1%, 12.9% and 21.4%; p < 0.05), respectively. CONCLUSION Low seropositivity rates for measles, mumps and HAV are important findings. For other diseases other than VZV, it is thought that vaccination without pre-screening is more appropriate. Healthcare institutions should have policies for screening and vaccination of their staff and students.
Collapse
Affiliation(s)
- Aslı Karadeniz
- Maltepe University, Faculty of Medicine, Department of Infectious Diseases and Clinical Microbiology, Istanbul, Turkey.
| | - Elçin Akduman Alaşehir
- Maltepe University, Faculty of Medicine, Department of Medical Microbiology, Istanbul, Turkey
| |
Collapse
|
16
|
Are refugees arriving in Denmark an under-immunised group for measles? A cross-sectional serology study. Vaccine 2020; 38:2788-2794. [PMID: 32089459 DOI: 10.1016/j.vaccine.2020.02.025] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 02/03/2020] [Accepted: 02/07/2020] [Indexed: 01/12/2023]
Abstract
BACKGROUND In 2018, Europe faced the highest number of Measles cases in a decade. In Denmark, the childhood vaccination programme has a coverage of approximately 90%. To eliminate the disease, vaccine coverage needs to be above the herd immunity threshold of 95%. This can be even more difficult to obtain, when vaccination programmes break down due to war, natural disasters etc. and concern has been raised, that unvaccinated refugees could facilitate spread of measles when migrating. METHODS In order to address this concern, we tested 513 newly arrived refugees and family reunified refugees aged between 0 and 70 years for measles IgG antibodies. The participants were tested as part of a general health assessment between May 2016 and October 2018. In the cohort, 50% were males and the majority came from Syria (55%). RESULTS We found that 85% of the total group of refugees had immunity against measles. The 15% lacking antibodies were evenly distributed between the various countries of origin. Moreover, we found immunity to increase with age, leaving young children most vulnerable to infection, 79.9% (<19 years) vs 89.1% (≥19 years). Interview questions on previous vaccinations did not correlate to serology. CONCLUSION Refugees have measles immunity slightly lower than the host population.
Collapse
|
17
|
Zimmermann P, Perrett KP, Ritz N, Flanagan KL, Robins‐Browne R, van der Klis FRM, Curtis N, Abruzzo V, Allen K, Bonnici R, Casalaz D, Elborough H, Freyne B, Gardiner K, Germano S, Kollmann T, Messina N, Morrison C, Nakaya H, Ponsonby AL, Shann F, South M, Vuillermin P. Biological sex influences antibody responses to routine vaccinations in the first year of life. Acta Paediatr 2020; 109:147-157. [PMID: 31610635 DOI: 10.1111/apa.14932] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Revised: 05/01/2019] [Accepted: 07/05/2019] [Indexed: 12/13/2022]
Abstract
AIM We investigated the effect of early-life factors, namely sex, delivery mode, feeding method and antibiotic exposure, on antibody responses to routine vaccinations administered during the first year of life. METHODS One and seven months after the primary course of routine vaccines and 1 month after routine vaccines at 12 months of age, antibodies against 26 vaccine antigens were measured in 398 healthy infants. The geometric mean concentration (GMC) of antibodies (adjusted for effect modifiers with multiple linear regression) and the seroprotection rate for each vaccine were compared for each early-life factor. RESULTS Sex had an influence on GMCs. Antibody concentrations were significantly lower at 7 months of age in females for tetanus and filamentous haemagglutinin and at 13 months of age for pertactin. In contrast, at 13 months of age, antibody concentrations were significantly higher in females for polio type 3, pneumococcal serotype 6A and measles. Sex did not have an influence on seroprotection rates. Delivery mode, feeding method and antibiotic exposure did not exert a substantial influence on vaccine antibody concentrations. CONCLUSION There is a difference between males and females in the humoral response to routine vaccinations in the first year of life.
Collapse
Affiliation(s)
- Petra Zimmermann
- Department of Paediatrics The University of Melbourne Parkville Victoria Australia
- Infectious Diseases Research Group Murdoch Children's Research Institute Parkville Victoria Australia
- Infectious Diseases Unit The Royal Children's Hospital Melbourne Parkville Victoria Australia
- Department of Paediatrics, Fribourg Hospital HFR and Faculty of Science and Medicine University of Fribourg Fribourg Switzerland
| | - Kirsten P. Perrett
- Food Allergy Research Group and Melbourne Children's Trial Centre Murdoch Children's Research Institute Parkville Victoria Australia
- Departments of Allergy and Immunology and General Medicine Royal Children's Hospital Melbourne, Parkville Victoria Australia
- School of Population and Global Health The University of Melbourne Parkville Victoria Australia
| | - Nicole Ritz
- Department of Paediatrics The University of Melbourne Parkville Victoria Australia
- Infectious Diseases Unit University of Basel Children's Hospital Basel Switzerland
| | - Katie L. Flanagan
- University of Tasmania, Launceston and Monash University Clayton Victoria Australia
| | - Roy Robins‐Browne
- Infectious Diseases Research Group Murdoch Children's Research Institute Parkville Victoria Australia
- Department of Microbiology and Immunology The University of Melbourne Parkville Victoria Australia
| | - Fiona R. M. van der Klis
- Centre for Infectious Diseases National Institute of Public Health and the Environment Bilthoven The Netherlands
| | - Nigel Curtis
- Department of Paediatrics The University of Melbourne Parkville Victoria Australia
- Infectious Diseases Research Group Murdoch Children's Research Institute Parkville Victoria Australia
- Infectious Diseases Unit The Royal Children's Hospital Melbourne Parkville Victoria Australia
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
18
|
Louka C, Chandler E, Ranchor AV, Broer H, Pournaras S, Ravensbergen SJ, Stienstra Y. Asylum seekers' perspectives on vaccination and screening policies after their arrival in Greece and The Netherlands. PLoS One 2019; 14:e0226948. [PMID: 31877563 PMCID: PMC6932865 DOI: 10.1371/journal.pone.0226948] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Accepted: 12/10/2019] [Indexed: 01/07/2023] Open
Abstract
Introduction Europe has been dealing with an increasing number of refugees during the past 5 years. The timing of screening and vaccination of refugees is debated by many professionals, however refugees’ perspectives on health issues are infrequently taken into account. In this study, we aimed to investigate asylum seekers’ perspectives on infectious diseases screening and vaccination policies. Materials and methods Interviews were conducted in Greece and the Netherlands. Asylum seekers and recently arrived refugees were approached and informed with the help of interpreters; consent forms were acquired. The survey focused on demographic data, vaccination status, screening policies and prevention of infectious diseases. Results A total of 61 (43 male, 70.5%) refugees (30 Afghanis, 16 Syrian, 7 Erithrean) were interviewed. Mean age was 35.2 years (SD 13.5) and 50% had received primary or secondary education, while 24.6% received none. Median time after arrival in Greece and the Netherlands was 24 months (IQR 8.5–28). 44 out of 61 (72.1) participants were willing to be vaccinated after arrival in Europe, 26 preferred vaccination and screening to be performed at the point of entry. The need for screening and vaccination was perceived higher amongst participants in Greece (100% vs 43.3%) due to living conditions leading to increased risk of outbreaks. Conclusion Participants were willing to communicate their perspectives and concerns. Screening and vaccination programs could be more effective when implemented shortly after arrival and by involving asylum seekers and refugees when developing screening and vaccination interventions.
Collapse
Affiliation(s)
- Christina Louka
- Department of Internal Medicine, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
- ESCMID study group for infections in travelers and migrants, Basel, Switzerland
- * E-mail:
| | - Elizabeth Chandler
- Department of Internal Medicine, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Adelita V. Ranchor
- Department of Health Psychology, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | | | - Spyros Pournaras
- Laboratory of Clinical Microbiology, ‘ATTIKON’ University Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Sofanne J. Ravensbergen
- Department of Internal Medicine, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
- ESCMID study group for infections in travelers and migrants, Basel, Switzerland
| | - Ymkje Stienstra
- Department of Internal Medicine, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
- ESCMID study group for infections in travelers and migrants, Basel, Switzerland
| |
Collapse
|
19
|
Hvass AMF, Wejse C. High coverage of polio immunization program in refugees resettling in Denmark. A cross-sectional study of polio serology in newly arrived refugees. Expert Rev Vaccines 2019; 18:1317-1322. [PMID: 31771367 DOI: 10.1080/14760584.2019.1698953] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Objectives: Wild poliovirus (WPV) infection has been eliminated in Europe through mass immunization. Resettling refugees may lack immunity and importing WPV through refugees continues to cause concerns.Method: We performed a cross-sectional study to establish the prevalence of poliovirus immunity in children and adult refugees resettling in Aarhus, Denmark. Immunity was evaluated by antibody response for serotypes 1, 2, and 3.Results: The participants in this study counted a total of 475 children and adult refugees aged between 6 months and 76 years and 59% were males. The survey was conducted between 2014 and 2016. Among the refugees, 72% were from Syria, and the rest from Eritrea, Congo, Lebanon, Somalia, Afghanistan, Iran, Iraq, Ethiopia, and Columbia. In the cohort, 27 lacked antibodies against a least one serotype. None of the participants lacked antibodies against all three polio types. Originating from The Horn of Africa, age between 20 and 30 and male gender was associated with lack of immunity.Conclusion: The study found a complete WPV immunity in 94% of recently resettled refugees in Denmark. This study demonstrates a high coverage of the polio immunization program. However, ensuring poliovirus immunity among refugees remains a priority until polio has been eradicated worldwide.
Collapse
Affiliation(s)
- A M F Hvass
- Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark.,Department of Social Medicine, Aarhus Municipality, Aarhus, Denmark
| | - C Wejse
- Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark.,Department of Public Health, Center for Global Health, Aarhus University, Aarhus, Denmark
| |
Collapse
|
20
|
Chinchai T, Posuwan N, Vuthitanachot V, Wanlapakorn N, Poovorawan Y. Seroprevalence of an antibody against diphtheria, tetanus, and pertussis among the elderly in Khon Kaen, Thailand. JOURNAL OF HEALTH, POPULATION, AND NUTRITION 2019; 38:28. [PMID: 31627764 PMCID: PMC6798466 DOI: 10.1186/s41043-019-0186-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Accepted: 09/23/2019] [Indexed: 06/10/2023]
Abstract
BACKGROUND Owing to a declining birth rate and longer lifespan, the number of elderly people (≥ 60 years) in Thailand has grown rapidly. However, the elderly are at significant risk of infectious diseases because they have never been immunized, because they have not been completely immunized, or because their immunity has waned. Immunity against infectious diseases in the elderly is an important means of controlling diseases in the community. Our objective was to evaluate the seroprotective rate against diphtheria, tetanus, and pertussis in the elderly Thai population. METHODS In total, 430 healthy individuals from the northeastern region of Thailand were enrolled in this study and stratified into five age groups: 60-65, 66-70, 71-75, 76-80, and > 80 years. Serum samples were collected and quantitatively analyzed for diphtheria, tetanus, and pertussis IgG antibody by using commercial ELISA kits. For anti-diphtheria toxoid and anti-tetanus toxoid ELISA, values < 0.01 IU/ml were interpreted as seronegative, and for anti-Bordetella pertussis toxin ELISA, values < 5 IU/ml were interpreted as seronegative; these definitions were in accord with previous studies. RESULTS For diphtheria toxoid Ab, the majority of the population had antibody levels > 0.01 IU/ml. For tetanus anti-toxoid Ab, the majority of the population had antibody levels of > 0.01 IU/ml, of which approximately 34% had durable antibody protection levels (DAPL) of ≥ 1 IU/ml. Meanwhile, nearly 45% of the population had an Ab level against pertussis lower than the protectivity level. CONCLUSIONS In total, 97.2%, 83.5%, and 55.8% of the population had a higher antibody level than the minimal protective level for diphtheria, tetanus, and pertussis, respectively. In order to prevent an outbreak of these diseases in the future, the elderly should be administered with Tdap revaccination to provide diphtheria herd immunity in the population; this will increase cocoon phenomenon for pertussis and protect the population from tetanus-prone injury.
Collapse
Affiliation(s)
- Teeraporn Chinchai
- Department of Microbiology, Faculty of Medicine, Srinakharinwirot University, Bangkok, 10110, Thailand
| | - Nawarat Posuwan
- Center of Excellence in Clinical Virology, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand
| | | | - Nasamon Wanlapakorn
- Center of Excellence in Clinical Virology, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Yong Poovorawan
- Center of Excellence in Clinical Virology, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand.
| |
Collapse
|
21
|
Staehelin C, Chernet A, Sydow V, Piso RJ, Suter-Riniker F, Funez S, Nickel B, Paris DH, Labhardt ND. Seroprotection rates of vaccine-preventable diseases among newly arrived Eritrean asylum seekers in Switzerland: a cross-sectional study. J Travel Med 2019; 26:5486058. [PMID: 31094415 DOI: 10.1093/jtm/taz035] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2019] [Revised: 05/01/2019] [Accepted: 05/01/2019] [Indexed: 11/14/2022]
Abstract
BACKGROUND According to 2016 World Health Organization and United Nations Children's Fund country estimates, Eritrea has overall high vaccination coverage with immunization rates for three doses of diphtheria/tetanus/pertussis and polio vaccine of 95%, for two doses measles vaccine of 85% and for three doses hepatitis B vaccine of 85%. If confirmed, this could imply that routine basic vaccination of newly arrived Eritreans could be safely omitted. METHODS We used stored serum samples from two cross-sectional studies that screened newly arrived Eritrean refugees for infectious diseases. Consenting refugees aged 16 years and older who registered in one of three neighbouring cantons in northwestern Switzerland were enrolled between January 2016 and December 2017. Antibody titers against the following vaccine-preventable diseases were measured (applied thresholds for seroprotection in brackets): diphtheria (>0.1 IU/ml), tetanus (>0.1 IU/ml), measles (>150 mIU/ml), rubella (only for women, >11 IU/ml), varicella (>50 mIU/ml), hepatitis B [hepatitis B surface antigen (HBsAg) Index >0.9, Hepatitis B core antibody (anti-HBc) Index >0.9 and antibodies to HBsAg (anti-HBs) >10 IE/L]. Differences between sex and age groups (≤25 and >25 years) were measured by Fisher's exact test. RESULTS We analysed samples of 133 study participants (20 women, 15%) with a median age of 25 years (range 16-61). Rates of seropositivity were as follows for women/men, respectively: diphtheria 57.9%/74.8% (difference non-significant), tetanus 94.8%/41.1% (P < 0.001), measles 73.7%/76.6% (non-significant), rubella in women 78.9%, varicella 89.5%/95.3% (non-significant), anti-HBc 15.8%/26.2% (non-significant) and anti-HBs 15.8%/17.8% (non-significant). CONCLUSION Seroprevalence for vaccine-preventable infections did not meet levels required to confer herd immunity in any of the human-to-human transmissible diseases that were studied. In general, the strategy proposed by the Federal Office of Public Health to offer basic immunization to all newly arrived refugees, including newly arriving Eritrean refugees, is justified.
Collapse
Affiliation(s)
- Cornelia Staehelin
- Department of Infectious Diseases, Inselspital, Bern University Hospital, University of Bern, Switzerland
| | - Afona Chernet
- Department of Medicine, Swiss Tropical and Public Health Institute, Basel, Switzerland.,University of Basel, Basel, Switzerland
| | - Véronique Sydow
- Department of Medicine, Swiss Tropical and Public Health Institute, Basel, Switzerland.,University of Basel, Basel, Switzerland
| | - Rein J Piso
- Medical Clinic, Cantonal Hospital of Olten, Olten, Switzerland
| | | | - Sabine Funez
- Institute for Infectious Diseases, University of Bern, Switzerland
| | - Beatrice Nickel
- Department of Medicine, Swiss Tropical and Public Health Institute, Basel, Switzerland.,University of Basel, Basel, Switzerland
| | - Daniel H Paris
- Department of Medicine, Swiss Tropical and Public Health Institute, Basel, Switzerland.,University of Basel, Basel, Switzerland
| | - Niklaus D Labhardt
- Department of Medicine, Swiss Tropical and Public Health Institute, Basel, Switzerland.,University of Basel, Basel, Switzerland.,Division of Infectious Diseases and Hospital Epidemiology, University Hospital Basel, Basel, Switzerland
| |
Collapse
|
22
|
Seth-Smith HMB, Egli A. Whole Genome Sequencing for Surveillance of Diphtheria in Low Incidence Settings. Front Public Health 2019; 7:235. [PMID: 31497588 PMCID: PMC6713046 DOI: 10.3389/fpubh.2019.00235] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Accepted: 08/06/2019] [Indexed: 12/29/2022] Open
Abstract
Corynebacterium diphtheriae (C. diphtheriae) is a relatively rare pathogen in most Western countries. While toxin producing strains can cause pharyngeal diphtheria with potentially fatal outcomes, the more common presentation is wound infections. The diphtheria toxin is encoded on a prophage and can also be carried by Corynebacterium ulcerans and Corynebacterium pseudotuberculosis. Currently, across Europe, infections are mainly diagnosed in travelers and refugees from regions where diphtheria is more endemic, patients from urban areas with poor hygiene, and intravenous drug users. About half of the cases are non-toxin producing isolates. Rapid identification of the bacterial pathogen and toxin production is a critical element of patient and outbreak management. Beside the immediate clinical management of the patient, public health agencies should be informed of toxigenic C. diphtheriae diagnoses as soon as possible. The collection of case-related epidemiological data from the patient is often challenging due to language barriers and social circumstances. However, information on patient contacts, vaccine status and travel/refugee route, where appropriate, is critical, and should be documented. In addition, isolates should be characterized using high resolution typing, in order to identify transmissions and outbreaks. In recent years, whole genome sequencing (WGS) has become the gold standard of high-resolution typing methods, allowing detailed investigations of pathogen transmissions. De-centralized sequencing strategies with redundancy in sequencing capacities, followed by data exchange may be a valuable future option, especially since WGS becomes more available and portable. In this context, the sharing of sequence data, using public available platforms, is essential. A close interaction between microbiology laboratories, treating physicians, refugee centers, social workers, and public health officials is a key element in successful management of suspected outbreaks. Analyzing bacterial isolates at reference centers may further help to provide more specialized microbiological techniques and to standardize information, but this is also more time consuming during an outbreak. Centralized communication strategies between public health agencies and laboratories helps considerably in establishing and coordinating effective surveillance and infection control. We review the current literature on high-resolution typing of C. diphtheriae and share our own experience with the coordination of a Swiss-German outbreak.
Collapse
Affiliation(s)
- Helena M. B. Seth-Smith
- Division of Clinical Bacteriology and Mycology, University Hospital Basel, Basel, Switzerland
- Applied Microbiology Research, Department of Biomedicine, University of Basel, Basel, Switzerland
- SIB Swiss Institute of Bioinformatics, Basel, Switzerland
| | - Adrian Egli
- Division of Clinical Bacteriology and Mycology, University Hospital Basel, Basel, Switzerland
- Applied Microbiology Research, Department of Biomedicine, University of Basel, Basel, Switzerland
| |
Collapse
|
23
|
Zimmermann P, Perrett KP, Messina NL, Donath S, Ritz N, van der Klis FR, Curtis N. The Effect of Maternal Immunisation During Pregnancy on Infant Vaccine Responses. EClinicalMedicine 2019; 13:21-30. [PMID: 31517260 PMCID: PMC6733996 DOI: 10.1016/j.eclinm.2019.06.010] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2019] [Revised: 06/01/2019] [Accepted: 06/18/2019] [Indexed: 12/18/2022] Open
Abstract
INTRODUCTION Immunisation during pregnancy to protect infants against tetanus, pertussis and influenza is recommended in many countries. However, maternal antibodies can interfere with infant vaccine responses. We investigated the effect of antenatal diphtheria-tetanus-acellular pertussis (dTpa) and trivalent inactivated influenza (TIV) immunisation on specific and heterologous antibody responses to routine immunisations given in the first year of life. METHODS In total, 471 healthy infants were included. At 7 and 13 months of age, antibodies to the primary course of routine vaccines given at 6 weeks, 4 and 6 months of age (pertussis (pertussis toxin (PT), filamentous haemagglutinin (FHA), pertactin (PRN)), polio (type 1, 2, 3), Haemophilus influenzae type b (Hib), pneumococcus (serotype 1, 3, 4, 5, 6A, 6B, 7F, 9V, 14, 18C, 19A, 19F, 23F)) were measured, and at 13 months of age, antibodies to the 12-month routine vaccines (Hib, meningococcus C, measles, mumps and rubella). The seroprotection rates for each vaccine and the geometric mean concentrations (GMC) of antibodies were compared between infants whose mothers did or did not receive dTpa or TIV immunisation during pregnancy. RESULTS A total of 369 infants were included in the final analysis. Maternal dTpa immunisation was associated with reduced antibody responses to both specific (diphtheria and pertussis) and heterologous (polio and pneumococcus) vaccine antigens. This effect was stronger for persistence of antibodies at 13 months of age than it was at 7 months of age. At 7 months of age, adjusted average antibody concentrations were significantly lower for diphtheria, pertussis (PT, FHA, PRN) and polio type 2, and at 13 months of age, for diphtheria, pertussis (PT, FHA, PRN), polio type 1-3 and pneumococcal serotypes 1, 4, 5, 6A, 6B, 7F, 18C and 23F. Additionally, at 13 months of age, seroprotection rates for diphtheria, PT, pneumococcal serotype 1, 6A and 6B were significantly lower in infants after maternal dTpa immunisation. In contrast, for Hib, in infants with maternal dTpa immunisation, the adjusted average antibody concentration and the seroprotection rate were higher, particularly at 7 months of age. Maternal TIV immunisation had minimal effect on infant vaccine responses. CONCLUSION Whilst maternal immunisation protects infants in the first few months of life, it might interfere with both specific and heterologous (unrelated) vaccines responses in infants. RESEARCH IN CONTEXT Evidence before this study: Maternal immunisation during pregnancy helps to protect infants during the period before they complete their primary immunisations. It has been proven to be safe and beneficial. However, pre-existing maternal antibodies can influence antibody responses following infant immunisation, an effect called 'blunting'. Previous studies have investigated the influence of dTpa but not influenza immunisation during pregnancy on infant vaccine responses. The majority of studies investigated antibody concentrations only to the specific vaccine antigens included in the maternal immunisation, and there is scarce data available on heterologous vaccine responses, particularly pneumococcal responses.Added value of this study: In this study, we have shown that maternal dTpa immunisation during pregnancy is associated with reduced antibody responses to both specific (diphtheria and pertussis) and heterologous (polio and pneumococcus) vaccine antigens. This effect is stronger for persistence of antibodies at 13 months of age than after primary immunisation at 7 months of age. In contrast, for Hib, in infants with maternal dTpa immunisation, antibody concentrations are higher, particularly at 7 months of age. Maternal TIV immunisation has minimal effect on infant vaccine responses.Implications of all the available evidence: Whilst maternal immunisation protects infants in the first few months of life, it might interfere with both specific and heterologous (unrelated) vaccines responses in infants. As most vaccines induce very high antibody responses, small differences in antibody concentrations may not be of clinical significance. However, since maternal immunisation during pregnancy also influences seroprotection rates, strategies, such as additional booster doses in the second year of life, particularly for pertussis and pneumococcus, might need to be considered to address this.
Collapse
Key Words
- Adacel
- Antibodies
- BCG, Bacillus Calmette-Guérin vaccine
- Boostrix
- CI, confidence interval
- FHA, filamentous haemagglutinin
- FIM, fimbriae
- Flu
- GMC, geometric mean antibody concentration
- GMR, geometric mean antibody ratio
- HepB, hepatitis B
- Heterologous
- Hib, Haemophilus influenzae type b
- Humoral
- IPV, inactivated polio vaccine
- IgG, immunoglobulin G
- Immunisation
- Immunoglobulin
- Influenza
- MIS BAIR, Melbourne Infant Study: BCG for Allergy and Infection Reduction
- MMR, measles-mumps-rubella vaccine
- MenC, meningococcus type C
- Non-specific
- PCV13, 13-valent conjugate pneumococcal vaccine
- PRN, pertactin
- PT, pertussis toxin
- TCV, tetanus-containing vaccine
- TIV, trivalent inactivated influenza vaccine
- Titre
- Vaccination
- dTpa
- dTpa, diphtheria-tetanus-acellular pertussis vaccine
Collapse
Affiliation(s)
- Petra Zimmermann
- Department of Paediatrics, The University of Melbourne, Parkville, Australia
- Infectious Diseases Unit, The Royal Children's Hospital Melbourne, Parkville, Australia
- Infectious Diseases Research Group, Murdoch Children's Research Institute, Parkville, Australia
- Department of Paediatrics, Fribourg Hospital HFR and Faculty of Science and Medicine, University of Fribourg, Switzerland
| | - Kirsten P. Perrett
- Food Allergy Research Group and Melbourne Children's Trial Centre, Murdoch Children's Research Institute, Parkville, Australia
- Departments of Allergy and Immunology and General Medicine, Royal Children's Hospital Melbourne, Parkville, Australia
- School of Population and Global Health, The University of Melbourne, Parkville, Australia
| | - Nicole L. Messina
- Department of Paediatrics, The University of Melbourne, Parkville, Australia
- Infectious Diseases Research Group, Murdoch Children's Research Institute, Parkville, Australia
| | - Susan Donath
- Department of Paediatrics, The University of Melbourne, Parkville, Australia
- Infectious Diseases Research Group, Murdoch Children's Research Institute, Parkville, Australia
| | - Nicole Ritz
- Infectious Diseases Unit, The Royal Children's Hospital Melbourne, Parkville, Australia
- Infectious Diseases Unit, University of Basel Children's Hospital, Basel, Switzerland
| | - Fiona R.M. van der Klis
- Laboratory for Infectious Diseases and Screening, National Institute of Public Health and the Environment, Bilthoven, the Netherlands
| | - Nigel Curtis
- Department of Paediatrics, The University of Melbourne, Parkville, Australia
- Infectious Diseases Unit, The Royal Children's Hospital Melbourne, Parkville, Australia
- Infectious Diseases Research Group, Murdoch Children's Research Institute, Parkville, Australia
- Corresponding author at: Department of Paediatrics, The University of Melbourne, Royal Children's Hospital Melbourne, Parkville, VIC 3052, Australia.
| |
Collapse
|
24
|
The influence of neonatal Bacille Calmette-Guérin (BCG) immunisation on heterologous vaccine responses in infants. Vaccine 2019; 37:3735-3744. [PMID: 31153688 DOI: 10.1016/j.vaccine.2019.03.016] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Revised: 03/10/2019] [Accepted: 03/11/2019] [Indexed: 10/26/2022]
Abstract
INTRODUCTION Bacillus Calmette-Guérin vaccine (BCG), one of the most widely used vaccines, does not only provide protection against tuberculosis and other mycobacterial infections, but also has non-specific (heterologous) immunomodulatory effects. In participants in a randomised trial, we investigated the effect of neonatal BCG immunisation on antibody responses to routine infant vaccines given in the first year of life. METHODS Antibodies against antigens in the diphtheria, tetanus, pertussis, polio, Haemophilus influenzae type b (Hib), and the 13-valent pneumococcal conjugate vaccines were measured in 91 (45 BCG-vaccinated, 46 BCG-naïve) infants one month after, and in 310 (169 BCG-vaccinated, 141 BCG-naïve) infants seven months after immunisation at 6 weeks, 4 and 6 months of age. In addition, antibodies against meningococcus C, Hib, measles, mumps, and rubella were measured in 147 (78 BCG-vaccinated, 69 BCG-naïve) infants one month after immunisation at 12 months of age. The seroprotection rates for each vaccine and the geometric mean concentrations (GMC) of antibodies were compared in BCG-vaccinated and BCG-naïve infants. RESULTS At 7 months of age, seroprotection rates were high in both BCG-vaccinated and BCG-naïve infants. At 13 months of age, seroprotection rates were lower than at 7 months of age, particularly for pertussis and a number of pneumococcal antigens, with generally higher rates for the latter in BCG-vaccinated infants. Although not statistically significant, antibody responses in BCG-vaccinated infants were consistently higher against diphtheria, tetanus, and pneumococcal antigens at both 7 and 13 months of age, and against measles and mumps at 13 months of age, but were lower against Hib one month after immunisation at both 7 and 13 months of age. CONCLUSION The immunomodulatory effect of BCG on antibody responses to heterologous vaccines adds to the evidence that BCG immunisation at birth has broad heterologous effects on the infant immune system.
Collapse
|
25
|
Abstract
Tetanus is a vaccine-preventable disease that still commonly occurs in many low-income and middle-income countries, although it is rare in high-income countries. The disease is caused by the toxin of the bacterium Clostridium tetani and is characterised by muscle spasms and autonomic nervous system dysfunction. Global vaccination initiatives have had considerable success but they continue to face many challenges. Treatment for tetanus aims to control spasms and reduce cardiovascular instability, and consists of wound debridement, antitoxin, antibiotics, and supportive care. Recent research has focused on intravenous magnesium sulphate and intrathecal antitoxin administration as methods of spasm control that can avoid the need for ventilatory support. Nevertheless, without access to mechanical ventilation, mortality from tetanus remains high. Even with such care, patients require several weeks of hospitalisation and are vulnerable to secondary problems, such as hospital-acquired infections.
Collapse
Affiliation(s)
- Lam Minh Yen
- Oxford University Clinical Research Unit, Hospital for Tropical Diseases, Ho Chi Minh City, Vietnam
| | - C Louise Thwaites
- Oxford University Clinical Research Unit, Hospital for Tropical Diseases, Ho Chi Minh City, Vietnam; Centre for Tropical Medicine and Global Health, University of Oxford, Oxford, UK.
| |
Collapse
|
26
|
Zimmermann P, Perrett KP, van der Klis FR, Curtis N. The immunomodulatory effects of measles-mumps-rubella vaccination on persistence of heterologous vaccine responses. Immunol Cell Biol 2019; 97:577-585. [PMID: 30791143 DOI: 10.1111/imcb.12246] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2018] [Revised: 02/18/2019] [Accepted: 02/18/2019] [Indexed: 02/06/2023]
Abstract
It is proposed that measles-containing vaccines have immunomodulatory effects which include a reduction in all-cause childhood mortality. The antibody response to heterologous vaccines provides a means to explore these immunomodulatory effects. This is the first study to investigate the influence of measles-mumps-rubella (MMR) vaccine on the persistence of antibodies to a broad range of heterologous infant vaccinations given in the first year of life. In total, 319 children were included in the study. All infants received routine vaccinations at 6 weeks, 4 and 6 months of age. At 12 months of age, 212 children were vaccinated with MMR and Haemophilus influenzae type b-meningococcus C (Hib-MenC) vaccines while the remaining 99 children had not yet received these vaccines. In the MMR/Hib-MenC-vaccinated group, blood was taken 28 ± 14 days after receiving these vaccines. Antibodies against diphtheria, tetanus, pertussis [pertussis toxin (PT), filamentous hemagglutinin, pertactin], poliomyelitis (type 1, 2, 3) and 13 pneumococcal serotypes were measured. Seroprotection rates and geometric mean antibody concentrations were compared between MMR/MenC-Hib-vaccinated and MMR/MenC-Hib-naïve participants. In the final analysis, 311 children were included. Seroprotection rates were lower in MMR/Hib-MenC-vaccinated children against PT and pneumococcal serotype 19A. After adjustment for prespecified factors, MMR/Hib-MenC-vaccinated infants had significantly higher antibody concentrations against tetanus (likely explained by a boosting effect of the carrier protein, a tetanus toxoid), while for the other vaccine antigens there was no difference in antibody concentrations between the two groups. MMR vaccination given at 12 months of age in a developed country does not significantly influence antibody concentrations to heterologous vaccines received in the first year of life.
Collapse
Affiliation(s)
- Petra Zimmermann
- Department of Paediatrics, The University of Melbourne, Parkville, VIC, Australia.,Infectious Diseases Unit, The Royal Children's Hospital Melbourne, Parkville, VIC, Australia.,Infectious Diseases Group, Murdoch Children's Research Institute, Parkville, VIC, Australia.,Department of Paediatrics, Fribourg Hospital HFR and Faculty of Science and Medicine, University of Fribourg, Fribourg, Switzerland
| | - Kirsten P Perrett
- Population Allergy Research Group and Melbourne Children's Trial Centre, Murdoch Children's Research Institute, Parkville, VIC, Australia.,Departments of Allergy and Immunology and General Medicine, Royal Children's Hospital Melbourne, Parkville, VIC, Australia.,School of Population and Global Health, The University of Melbourne, Melbourne, VIC, Australia
| | - Fiona Rm van der Klis
- National Institute of Public Health and the Environment, Centre for Infectious Diseases, Bilthoven, The Netherlands
| | - Nigel Curtis
- Department of Paediatrics, The University of Melbourne, Parkville, VIC, Australia.,Infectious Diseases Unit, The Royal Children's Hospital Melbourne, Parkville, VIC, Australia.,Infectious Diseases Group, Murdoch Children's Research Institute, Parkville, VIC, Australia
| |
Collapse
|
27
|
Abstract
Migration is increasing and practitioners need to be aware of the unique health needs of this population. The prevalence of infectious diseases among migrants varies and generally mirrors that of their countries of origin, but is modified by the circumstance of migration, the presence of pre-arrival screening programs and post arrival access to health care. To optimize the health of migrants practitioners; (1) should take all opportunities to screen migrants at risk for latent infections such as tuberculosis, chronic hepatitis B and C, HIV, strongyloidiasis, schistosomiasis and Chagas disease, (2) update routine vaccines in all age groups and, (3) be aware of "rare and tropical infections" related to migration and return travel.
Collapse
Affiliation(s)
- Christina Greenaway
- Division of Infectious Diseases, Jewish General Hospital, Room E0057, 3755 Côte Ste-Catherine Road, Montreal, Quebec H3T 1E2, Canada; Centre for Clinical Epidemiology, Lady Davis Institute for Medical Research, 3755 Côte Ste-Catherine Road, Montreal, Quebec H3T 1E2, Canada; J.D. MacLean Center for Tropical Diseases at McGill, McGill University Health Centre, Glen Site, 1001 Décarie Boulevard, Montreal, Quebec H4A 3J1, Canada.
| | - Francesco Castelli
- University Department of Infectious and Tropical Diseases, University of Brescia and ASST Spedali Civili, Piazza del Mercato, 15, Lombardy, Brescia 25121, Italy; UNESCO Chair "Training and Empowering Human Resources for Health Development in Resource-Limited Countries", University of Brescia, Brescia, Italy
| |
Collapse
|
28
|
Greenaway C, Castelli F. Infectious diseases at different stages of migration: an expert review. J Travel Med 2019; 26:5307656. [PMID: 30726941 DOI: 10.1093/jtm/taz007] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2018] [Revised: 01/29/2019] [Accepted: 02/01/2019] [Indexed: 12/16/2022]
Abstract
BACKGROUND Human migration is increasing in magnitude and scope. The majority of migrants arriving in high-income countries originate from countries with a high prevalence of infectious diseases. The risk and burden of infectious diseases are not equally distributed among migrant groups and vary with migration stage. METHODS A broad literature review was conducted on the drivers for infectious diseases and associated health outcomes among migrants across different stages of migration. The aim was to provide practitioners with an overview of the key infectious disease risks at each stage to guide health promotion strategies. RESULTS A complex interaction of factors leads to infectious diseases and associated poor health outcomes among migrants. The most important drivers are the epidemiology of infectious diseases in their countries of origin, the circumstances and conditions of the migration journey and barriers accessing healthcare post-arrival. During the recent large waves of forced migration into Europe, the primary health concerns on arrival were psychological, traumatic and chronic non-communicable diseases. In the early settlement period, crowded and unhygienic living conditions in reception camps facilitated outbreaks of respiratory, gastrointestinal, skin infections and vaccine preventable diseases. After re-settlement, undetected and untreated latent infections due to tuberculosis, viral hepatitis, HIV, chronic helminthiasis and Chagas' disease led to poor health outcomes. Migrants are disproportionally affected by preventable travel-related diseases such as malaria, typhoid and hepatitis due to poor uptake of pre-travel prophylaxis and vaccination. Infectious diseases among migrants can be decreased at all migration stages with health promotion strategies adapted to their specific needs and delivered in a linguistically and culturally sensitive manner. CONCLUSIONS Tailored health promotion and screening approaches and accessible and responsive health systems, regardless of legal status, will be needed at all migration stages to limit the burden and transmission of infectious diseases in the migrant population.
Collapse
Affiliation(s)
- Christina Greenaway
- Division of Infectious Diseases, Jewish General Hospital, McGill University, Montreal, Canada.,Centre for Clinical Epidemiology of the Lady Davis Institute for Medical Research, Jewish General Hospital, McGill University, Montreal, Canada.,JD MacLean Centre for Tropical Diseases at McGill, McGill University Health Centre, McGill University, Montreal, Canada
| | - Francesco Castelli
- JD MacLean Centre for Tropical Diseases at McGill, McGill University Health Centre, McGill University, Montreal, Canada.,University Department of Infectious and Tropical Diseases, University of Brescia and ASST Spedali Civili, Brescia, Italy.,UNESCO Chair 'Training and Empowering Human Resources for Health Development in Resource-Limited Countries', University of Brescia, Brescia, Italy
| |
Collapse
|
29
|
Hagstam P, Böttiger B, Winqvist N. Measles and rubella seroimmunity in newly arrived adult immigrants in Sweden. Infect Dis (Lond) 2019; 51:122-130. [PMID: 30676125 DOI: 10.1080/23744235.2018.1524583] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
Abstract
BACKGROUND International migrants could be considered as a risk group for being susceptible to vaccine preventable diseases such as measles and rubella. However, data on immunity in different migrant groups are scarce. Apart from asylum seekers and refugees, other immigrant groups might also be at risk. We have examined measles and rubella specific IgG antibodies among newly arrived adult immigrants in Skåne region in southern Sweden. In contrast to children, adult immigrants are not offered catch-up vaccinations after arrival. METHODS Stored serum samples from 989 asylum seekers and 984 pregnant women from the antenatal screening program, who had recently settled in Sweden, were analyzed for specific measles and rubella IgG-antibodies. Sex, age, reason for screening and geographic origin were variables entered into a multivariate regression model. RESULTS There were considerable differences in seroimmunity to measles with regard to geographic origin (44-97%). Measles seroimmunity gaps were most prominent in immigrants from some European regions such as the Baltic countries, the former Yugoslavia and the Newly Independent States and Russia. Seroprotection for rubella varied less between geographic regions (90-99%). CONCLUSION Susceptibility to measles among adult immigrants arriving in Sweden varies considerably depending on their geographic origin. Vaccinations against measles and rubella should be offered to groups of immigrants who might be incompletely immunized.
Collapse
Affiliation(s)
- Per Hagstam
- a Regional Office of Communicable Disease Control and Prevention, Region Skåne, Malmö, Sweden
| | - Blenda Böttiger
- b Department of Clinical Microbiology, Division of Laboratory Medicine , Lund University , Lund , Sweden
| | - Niclas Winqvist
- a Regional Office of Communicable Disease Control and Prevention, Region Skåne, Malmö, Sweden.,c Clinical Infection Medicine, Department of Translational Medicine , Lund University , Lund, Sweden
| |
Collapse
|
30
|
Einterz EM. Hepatitis A and B among newly arrived refugees: Vaccinate all, or test first for immunity? Int J Clin Pract 2018; 72:e13268. [PMID: 30259605 DOI: 10.1111/ijcp.13268] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2018] [Accepted: 09/04/2018] [Indexed: 11/29/2022] Open
Abstract
AIM When screening newly arrived refugees, physicians must decide whether to vaccinate against hepatitis A and B at first encounter, thereby minimising missed opportunity, or to test for immunity and vaccinate only the susceptible, minimising unnecessary intervention. Better knowledge of hepatitis A and B immunity in refugee populations from different parts of the world is needed. METHOD Overseas and domestic medical records of refugees from Africa, Asia, and the Middle East who entered Marion County (Indiana) between 1 September 2016 and 31 December 2017 were reviewed. RESULTS Of 1191 refugees, 1163 and 1153 were tested for immunity to hepatitis A and B respectively. Among <19 year-olds, immunity to hepatitis A ranged from 52.1% to 79.6%, and immunity to hepatitis B ranged from 75.5% to 87.6%. Among ≥19 year-olds, immunity to hepatitis A was greater than 90% for each of the three regions, whereas immunity to hepatitis B ranged from 19.3% to 94.4%. 96% of refugees in the subset of Burmese ≥19 years old were immune to hepatitis B. Of individuals immune to hepatitis B, immunity was due to vaccination in 94.1% of <19 year-olds and 57.4% of ≥19 year-olds. 10% of refugees with at least three documented doses of hepatitis B vaccine were negative for hepatitis B surface antibody. 34.1% of uninfected refugees with no documented doses of hepatitis B vaccination were positive for hepatitis B surface antibody. CONCLUSION It is reasonable to begin hepatitis A vaccination of <19 year-olds in this refugee population at first encounter but to test first for hepatitis A susceptibility before vaccinating those ≥19 years old. Similarly delaying hepatitis B vaccination might be appropriate only for a subset of Burmese adults.
Collapse
Affiliation(s)
- Ellen M Einterz
- Marion County Public Health Department, Foreign Born/Refugee Health/TB Control, Indianapolis, Indiana
| |
Collapse
|
31
|
Tiittala P, Tuomisto K, Puumalainen T, Lyytikäinen O, Ollgren J, Snellman O, Helve O. Public health response to large influx of asylum seekers: implementation and timing of infectious disease screening. BMC Public Health 2018; 18:1139. [PMID: 30249224 PMCID: PMC6154941 DOI: 10.1186/s12889-018-6038-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Accepted: 09/13/2018] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND Infectious disease screening of migrants at increased risk is a feature of national infection prevention and control measures. Asylum seekers in Finland are offered screening of tuberculosis (TB), hepatitis B, human immunodeficiency virus infection (HIV) and syphilis based on individual risk assessment. We aimed to evaluate the public health response to a large influx of asylum seekers to Finland in 2015-2016 with respect to national guidelines on initial health services and infectious disease screening. METHODS We used immigration and healthcare procurement data for all 38,134 asylum seekers to Finland during 2015-2016 to assess the implementation, timing and yields of infectious disease screening. RESULTS The coverage of pulmonary TB screening was 71.6% [95% CI 71.1-72.0%] and that of hepatitis B, HIV or syphilis 60.6% [60.1-61.1%] among those eligible for screening. The estimated average delay from arrival to pulmonary TB screening was 74 days for adults and 43 days for children. Delay to hepatitis B, HIV and syphilis screening was 91 days for adults and 47 days for children. The seroprevalence of hepatitis B surface antigen positivity was 1.4% [95% CI 1.3-1.6%], HIV 0.3% [95% CI 0.1-0.4%] and Treponema pallidum specific antibodies 1.0% [95% CI 0.8-1.1%]. Data did not allow assessment of yields of pulmonary TB screening. CONCLUSIONS Up to one third of asylum seekers were not reached by screening and screenings were delayed from target timeframes. Children, as a vulnerable population, were screened earlier than adults. To ensure higher screening coverage, infectious disease risks should be reassessed and screening completed at contacts to healthcare during the post-asylum phase of integration. The large influx of asylum seekers to Finland in 2015-2016 tested the country's public health preparedness. After action reviews of the public health response to the large migrant influx such as screening implementation can be used for evidence-based improvement of public health preparedness and guidelines for initial health services and infectious disease screening.
Collapse
Affiliation(s)
- Paula Tiittala
- Doctoral Programme for Population Health, University of Helsinki, Helsinki, Finland. .,Department of Health Security, Infectious Disease Control and Vaccinations Unit, National Institute for Health and Welfare, P.O. Box 30, 00271, Helsinki, Finland.
| | - Karolina Tuomisto
- Department of Health Security, Infectious Disease Control and Vaccinations Unit, National Institute for Health and Welfare, P.O. Box 30, 00271, Helsinki, Finland
| | - Taneli Puumalainen
- Department of Health Security, Infectious Disease Control and Vaccinations Unit, National Institute for Health and Welfare, P.O. Box 30, 00271, Helsinki, Finland
| | - Outi Lyytikäinen
- Department of Health Security, Infectious Disease Control and Vaccinations Unit, National Institute for Health and Welfare, P.O. Box 30, 00271, Helsinki, Finland
| | - Jukka Ollgren
- Department of Health Security, Infectious Disease Control and Vaccinations Unit, National Institute for Health and Welfare, P.O. Box 30, 00271, Helsinki, Finland
| | | | - Otto Helve
- Department of Health Security, Infectious Disease Control and Vaccinations Unit, National Institute for Health and Welfare, P.O. Box 30, 00271, Helsinki, Finland
| |
Collapse
|
32
|
Interventions to Improve Vaccination Uptake and Cost Effectiveness of Vaccination Strategies in Newly Arrived Migrants in the EU/EEA: A Systematic Review. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2018; 15:ijerph15102065. [PMID: 30241320 PMCID: PMC6210200 DOI: 10.3390/ijerph15102065] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Revised: 09/04/2018] [Accepted: 09/07/2018] [Indexed: 12/28/2022]
Abstract
Newly arrived migrants to the EU/EEA (arrival within the past five years), as well as other migrant groups in the region, might be under-immunised and lack documentation of previous vaccinations, putting them at increased risk of vaccine-preventable diseases circulating in Europe. We therefore performed a systematic review conforming to PRISMA guidelines (PROSPERO CRD42016045798) to explore: (i) interventions that improve vaccine uptake among migrants; and (ii) cost-effectiveness of vaccination strategies among this population. We searched MEDLINE, Embase, CINAHL, and Cochrane Database of Systematic Reviews (CDSR) between 1 January 2006 to 18 June 2018. We included three primary intervention studies performed in the EU/EEA or high-income countries and one cost effectiveness study relevant to vaccinations in migrants. Intervention studies showed small but promising impact only on vaccine uptake with social mobilization/community outreach, planned vaccination programs and education campaigns. Targeting migrants for catch-up vaccination is cost effective for presumptive vaccination for diphtheria, tetanus, and polio, and there was no evidence of benefit of carrying out pre-vaccination serological testing. The cost-effectiveness is sensitive to the seroprevalence and adherence to vaccinations of the migrant. We conclude that scarce but direct EU/EEA data suggest social mobilization, vaccine programs, and education campaigns are promising strategies for migrants, but more research is needed. Research should also study cost effectiveness of strategies. Vaccination of migrants should continue to be a public heath priority in EU/EEA.
Collapse
|