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Mutembo S, Yang Y, Carcelen A, Winter AK, Mwansa FD, Chilumba I, Mutale I, Chongwe G, Monze M, Mulundu G, Nkamba H, Mulenga L, Hayford K, Moss WJ. Measles immunity gaps among children and adolescents with HIV in Zambia despite high measles vaccination and antiretroviral therapy coverage. AIDS 2023; 37:2021-2029. [PMID: 37418463 PMCID: PMC10664789 DOI: 10.1097/qad.0000000000003634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 05/15/2023] [Accepted: 05/19/2023] [Indexed: 07/09/2023]
Abstract
OBJECTIVE The study objective was to identify measles and rubella immunity gaps among people with HIV (PWH) in Zambia despite high measles vaccine coverage and widespread access to antiretroviral therapy. DESIGN Nationally representative cross-sectional serosurvey using biorepository specimens. METHODS Blood specimens collected in the Zambia Population HIV Impact Assessment survey (ZAMPHIA) of 2016 were tested for measles and rubella immunoglobulin G (IgG) antibodies by enzyme immunoassay. Hierarchical generalized additive models were fit to characterize age-specific measles and rubella seroprevalence profiles by HIV infection status. Log-binomial regression was performed to identify factors associated with seronegativity. RESULTS Of the 25 383 specimens, a subsample of 11 500 were selected and 9852 (85%) were successfully tested. Measles seroprevalence was lower among PWH compared with HIV-uninfected individuals until approximately 30 years of age. Among children younger than the age of 10 years, measles seroprevalence was 47.2% [95% confidence interval (CI): 32.7, 61.7] in PWH and 76.4% (95% CI: 74.9, 78.0) in HIV-uninfected children in same age category. In contrast, rubella seroprevalence was higher among PWH than HIV-uninfected individuals, particularly for children younger than 10 years (68.6% vs. 44.3%, P < 0.001). Having a detectable viral load was associated with being measles seronegative (adjusted prevalence ratio 0.15, 95% CI: 0.06, 0.38). CONCLUSIONS These results from a nationally representative serosurvey demonstrate persistence of measles immunity gaps among PWH younger than 30 years of age. There is need to implement the World Health Organization's recommendation to revaccinate children living with HIV against measles following immune reconstitution with antiretroviral therapy to protect these children and prevent measles outbreaks.
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Affiliation(s)
- Simon Mutembo
- Department of International Health, International Vaccine Access Center, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA
- Ministry of Health, Government of the Republic of Zambia, Lusaka, Zambia
| | - Yangyupei Yang
- Department of International Health, International Vaccine Access Center, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA
| | - Andrea Carcelen
- Department of International Health, International Vaccine Access Center, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA
| | - Amy Kaye Winter
- Department of Epidemiology and Biostatistics, University of Georgia, Athens, Georgia, USA
| | | | | | | | | | - Mwaka Monze
- Department of Pathology and Microbiology, University Teaching Hospital
| | - Gina Mulundu
- Department of Pathology and Microbiology, University Teaching Hospital
| | - Hope Nkamba
- Department of Pathology and Microbiology, University Teaching Hospital
| | - Lloyd Mulenga
- Ministry of Health, Directorate of Clinical Care and Diagnostic Service, Government of the Republic of Zambia, Lusaka, Zambia
| | - Kyla Hayford
- Department of International Health, International Vaccine Access Center, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA
| | - William John Moss
- Department of International Health, International Vaccine Access Center, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA
- Department of Epidemiology
- W Harry Feinstone Department of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA
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Kolakowska A, Brichler S, Delagrèverie H, Marin J, Alloui AC, Cailhol J. Cross sectional survey of Varicella-Zoster virus and measles seropositivity in people living with HIV in a Parisian suburb and a review of current immunization guidelines. Vaccine 2023; 41:3266-3274. [PMID: 37085454 DOI: 10.1016/j.vaccine.2023.03.058] [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: 11/24/2022] [Revised: 02/25/2023] [Accepted: 03/23/2023] [Indexed: 04/23/2023]
Abstract
According to evidence-based guidelines, vaccines against measles and varicella are generally recommended to susceptible HIV-positive patients, as long as they are not severely immunocompromised. However, routine screening to determine serologic status is not recommended. We conducted a seroprevalence study of anti-measles and anti-Varicella-Zoster virus (VZV) antibodies in adults living with HIV (PLWHA) consulting at Avicenne University Hospital in a Parisian suburb. Sera were collected in years 2018-2020 and tested by commercial immunoassays in 268 patients. Most of the patients were born in Sub-Saharan Africa (55 %) and only 23 % in Europe. Measles and varicella seropositivity were present respectively in 91.4 % and 96.2 % of patients. One patient in ten was seronegative to at least one of tested diseases. In the univariate analysis, only younger age (p = 0.027) was associated with a higher risk of measles seronegativity, while shorter time since arrival in France (p < 0.001) and shorter time since HIV discovery (p = 0.007) were associated with a higher risk of VZV seronegativity. In multivariate analysis no association was found. This study highlights the absence of specific risk factors for VZV and measles seronegativity in PLWHA and supports the importance of routine screening, in order to increase immunization rates and reduce risk of complications.
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Affiliation(s)
- A Kolakowska
- Service de Maladies Infectieuses et Tropicales, Groupe Hospitalier Paris Seine Saint-Denis, AP-HP, Bobigny, France.
| | - Ségolène Brichler
- Service de Microbiologie Clinique, Groupe Hospitalier Paris Seine Saint-Denis, AP-HP, Bobigny, France
| | - Héloise Delagrèverie
- Service de Microbiologie Clinique, Groupe Hospitalier Paris Seine Saint-Denis, AP-HP, Bobigny, France
| | - Julie Marin
- Université Sorbonne Paris Nord and Université Paris Cité, Inserm, IAME, F-93000 Bobigny, France
| | - Ahmed-Chakib Alloui
- Service de Microbiologie Clinique, Groupe Hospitalier Paris Seine Saint-Denis, AP-HP, Bobigny, France
| | - Johann Cailhol
- Service de Maladies Infectieuses et Tropicales, Groupe Hospitalier Paris Seine Saint-Denis, AP-HP, Bobigny, France; Laboratoire Educations et Promotion de la Santé, UR3412, Sorbonne Paris Nord University, Bobigny, France.
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Carcelen AC, Limaye RJ, Mutembo S, Hamahuwa M, Thuma PE, Moss WJ, Hayford K. Acceptability of serosurveys in southern Zambia: data collector and caregiver perspectives. DISCOVER SOCIAL SCIENCE AND HEALTH 2023; 3:3. [PMID: 36824432 PMCID: PMC9940080 DOI: 10.1007/s44155-023-00032-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Accepted: 02/13/2023] [Indexed: 02/25/2023]
Abstract
Background Factors associated with whether individuals choose to participate in serosurveys are not well understood. Understanding perceptions from multiple perspectives, including the perspectives of both data collectors and participants, through a holistic model such as the socio-ecological model contextualizes individual, interpersonal, and structural level influences on survey research participation. We used a multiple methods approach to characterize reasons for serosurvey participation in communities in Southern Province, Zambia where a serosurvey was conducted in 2016. Methods The first phase conducted focus group discussions and in-depth interviews with 24 data collectors who participated in a measles-rubella serosurvey in 2016. The second phase surveyed 34 caregivers at health facilities to identify barriers and facilitators to serosurvey participation. Emergent themes were then classified into a socio-ecological model using individual, interpersonal, and structural level constructs. Results Common themes emerged from data collectors as well as caregivers surveyed. At the individual level, providing incentives was a facilitator, and some religious beliefs were described as a barrier to serosurvey participation. At the interpersonal level, family dynamics and community peer influences could help or hinder serosurvey participation. Community health workers were consistently named as facilitators of participation. At the structural level, concerns about specimen collection, who was selected for serosurveys, and not receiving test results arose as potential barriers. The most frequently reported facilitator was provision of information about the purpose of the serosurvey (85% of respondents). The most frequently reported barrier was lack of clarity regarding use of their blood specimen (53% of respondents). For specimen collection type, caregivers consistently preferred finger prick blood collection over both venous blood draw and oral swabs. Conclusion Serosurvey participation was deemed acceptable to most study participants. The socio-ecological model revealed barriers and facilitators for participation to guide strategies to improve participation which can be applied to ongoing serosurveys for SARS-CoV-2. Serosurveys should continue to develop engagement plans to provide information about blood collection ahead of the serosurvey and communicate the objectives of such studies through trusted sources such as community health workers and traditional leaders.
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Affiliation(s)
- Andrea C. Carcelen
- Department of International Health, Johns Hopkins Bloomberg School of Public Health, 415 N. Washington Street, Floor 5, Baltimore, MD 21231 USA
| | - Rupali J. Limaye
- Department of International Health, Johns Hopkins Bloomberg School of Public Health, 415 N. Washington Street, Floor 5, Baltimore, MD 21231 USA
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD USA
| | - Simon Mutembo
- Department of International Health, Johns Hopkins Bloomberg School of Public Health, 415 N. Washington Street, Floor 5, Baltimore, MD 21231 USA
- Government of the Republic of Zambia, Ministry of Health, Lusaka, Zambia
| | | | | | - William J. Moss
- Department of International Health, Johns Hopkins Bloomberg School of Public Health, 415 N. Washington Street, Floor 5, Baltimore, MD 21231 USA
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD USA
| | - Kyla Hayford
- Department of International Health, Johns Hopkins Bloomberg School of Public Health, 415 N. Washington Street, Floor 5, Baltimore, MD 21231 USA
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Diagnostic Accuracy of Dried Blood Spots Collected on HemaSpot HF Devices Compared to Venous Blood Specimens To Estimate Measles and Rubella Seroprevalence. mSphere 2021; 6:e0133020. [PMID: 34259557 PMCID: PMC8386429 DOI: 10.1128/msphere.01330-20] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Fingerprick blood spotted onto filter paper offers an alternative to venous blood for use in population-based surveillance because it is comparatively inexpensive, acceptable, and easy to manage in the field. Prior studies have shown excellent agreement for immunoglobulin G (IgG) antibody detection from dried blood spots (DBS) and venous blood samples. However, much of this evidence is from high-income settings or laboratories where the samples were unlikely to be exposed to extreme temperatures and humidity, factors known to degrade DBS. We report the diagnostic accuracy of DBS collected using HemaSpot HF devices against venous sera in measuring measles- and rubella-specific IgG antibodies in a household serosurvey conducted in two districts in India. Paired serum and DBS samples collected by fingerprick were collected from women aged 15 to 50 years enrolled in a serosurvey in Palghar District of Maharashtra and Kanpur Nagar District of Uttar Pradesh in India. Specimen quality and volume were assessed in the laboratory. Samples were tested for antimeasles and antirubella IgG antibodies by an enzyme-linked immunosorbent assay (ELISA) (Euroimmun). Sensitivity of antibody detection by DBS was greater than 98%, and specificity was 90% and 98%, for measles and rubella IgG, respectively. Antibody concentrations were strongly correlated between paired specimens with adequate volume (measles R2 = 0.94; rubella R2 = 0.89). Although correlation was poor if DBS specimens had lower volumes, impact on qualitative results was minimal. This study showed DBS collected with HemaSpot HF devices can generate highly accurate results of measles- and rubella-specific IgG compared to sera in community-based surveys when protocols are optimized for DBS specimens. IMPORTANCE Dried blood spot (DBS) collection provides an easy, practical, and acceptable alternative to venous blood collection, especially for community-based studies, provided that results from DBS are accurate. We demonstrated high sensitivity and specificity for measles- and rubella-specific immunoglobulin G (IgG) with DBS collected via HemaSpot HF devices compared to serum samples. This is one of the largest community-based diagnostic accuracy studies of measles and rubella antibody testing with DBS and the first application we are aware of using HemaSpot HF device for measles and rubella serology. Results support the use of DBS in community-based serosurveillance.
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Carcelen AC, Mutembo S, Matakala KH, Chilumba I, Mulundu G, Monze M, Mwansa FD, Moss WJ, Hayford K. Impact of a Measles and Rubella Vaccination Campaign on Seroprevalence in Southern Province, Zambia. Am J Trop Med Hyg 2021; 104:2229-2232. [PMID: 33939639 PMCID: PMC8176503 DOI: 10.4269/ajtmh.20-1669] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Accepted: 03/05/2021] [Indexed: 11/07/2022] Open
Abstract
Zambia conducted a measles and rubella (MR) vaccination campaign targeting children 9 months to younger than 15 years of age in 2016. This campaign was the first introduction of a rubella-containing vaccine in Zambia. To evaluate the impact of the campaign, we compared the MR seroprevalence estimates from serosurveys conducted before and after the campaign in Southern Province, Zambia. The measles seroprevalence increased from 77.8% (95% confidence interval [CI], 73.2-81.9) to 96.4% (95% CI, 91.7-98.5) among children younger than 15 years. The rubella seroprevalence increased from 51.3% (95% CI, 45.6-57.0) to 98.3% (95% CI, 95.5-99.4). After the campaign, slightly lower seroprevalence remained for young adults 15 to 19 years old, who were not included in the campaign because of their age. These serosurveys highlighted the significant impact of the vaccination campaign and identified immunity gaps for those beyond the targeted vaccination age. Continued monitoring of population immunity can signal the need for future targeted vaccination strategies.
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Affiliation(s)
- Andrea C Carcelen
- 1Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
| | - Simon Mutembo
- 1Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland.,2Ministry of Health, Government of the Republic of Zambia, Lusaka, Zambia
| | | | | | - Gina Mulundu
- 5University of Zambia School of Medicine, Lusaka, Zambia.,6University Teaching Hospital, Lusaka, Zambia
| | - Mwaka Monze
- 5University of Zambia School of Medicine, Lusaka, Zambia
| | - Francis D Mwansa
- 2Ministry of Health, Government of the Republic of Zambia, Lusaka, Zambia
| | - William J Moss
- 1Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland.,7Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
| | - Kyla Hayford
- 1Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
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Rearigh L, O'Neill J, Kubat M, Sayles H, Swindells S, Bares SH. Surprisingly Low Levels of Measles Immunity in Persons With HIV: A Seroprevalence Survey in a United States HIV Clinic. Open Forum Infect Dis 2020; 7:ofaa428. [PMID: 33072815 PMCID: PMC7553243 DOI: 10.1093/ofid/ofaa428] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Accepted: 09/10/2020] [Indexed: 11/14/2022] Open
Abstract
Background Measles outbreaks have become increasingly common due to deteriorating vaccination rates, fluctuating herd immunity, and varying antibody decline. Limited knowledge exists regarding prevalence and risk factors associated with measles seronegativity among persons with HIV (PWH). Methods This was a cross-sectional study conducted at an academic HIV clinic in Omaha, Nebraska. Participants were screened for the presence of measles IgG antibody. Demographic and clinical information was obtained through electronic medical record review. Simple and multivariable logistic regressions were performed to identify risk factors for measles seronegativity. Results Three hundred fifty-one participants were enrolled, with a measles seroprevalence rate of 70.3%. The mean age (range) was 48 (20-74) years, 77% were male, and 53% were Caucasian. The mean CD4 nadir (range) was 334 (1-1675) cells/mm3. At the time of testing, 86% and 87% of the seronegative and seropositive participants had an HIV RNA <50 copies/mL, respectively. Younger age was significantly associated with measles seronegativity (P = .003), as was birth year after 1957 (P = .021). Prior history of measles infection was associated with seropositivity (P = .011). All other risk factors evaluated, including written documentation of adequate vaccination, were not associated with seronegativity. Conclusions Our study demonstrates a measles seroprevalence rate that is remarkably lower than previously reported in PWH (92%), and, more importantly, is considerably lower than the rate needed to maintain herd immunity (95%). With higher than expected seronegativity and absence of notable risk factors aside from age, our findings support expanded measles immunity screening for PWH who are at risk of measles exposure.
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Affiliation(s)
- Lindsey Rearigh
- Division of Infectious Diseases, University of Nebraska Medical Center, Omaha, Nebraska, USA
| | - Jennifer O'Neill
- Division of Infectious Diseases, University of Nebraska Medical Center, Omaha, Nebraska, USA
| | - Maureen Kubat
- Division of Infectious Diseases, University of Nebraska Medical Center, Omaha, Nebraska, USA
| | - Harlan Sayles
- College of Public Health, University of Nebraska Medical Center, Omaha, Nebraska, USA
| | - Susan Swindells
- Division of Infectious Diseases, University of Nebraska Medical Center, Omaha, Nebraska, USA
| | - Sara H Bares
- Division of Infectious Diseases, University of Nebraska Medical Center, Omaha, Nebraska, USA
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Response to correspondence entitled: Perinatal HIV and response to vaccination. AIDS 2019; 33:1675-1677. [PMID: 31305335 DOI: 10.1097/qad.0000000000002247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Hayford K, Mutembo S, Carcelen A, Matakala HK, Munachoonga P, Winter A, Wanyiri JW, Searle K, Mwansa FD, Mwiche A, Phiri C, Book C, Thuma PE, Moss WJ. Measles and rubella serosurvey identifies rubella immunity gap in young adults of childbearing age in Zambia: The added value of nesting a serological survey within a post-campaign coverage evaluation survey. Vaccine 2019; 37:2387-2393. [PMID: 30905529 PMCID: PMC6467544 DOI: 10.1016/j.vaccine.2019.02.037] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Revised: 02/19/2019] [Accepted: 02/20/2019] [Indexed: 11/13/2022]
Abstract
We nested a measles and rubella serological survey in a vaccination coverage survey. Measles and rubella immunity was significantly higher than expected by vaccination. Study revealed immunity gap in young adults and risk of congenital rubella syndrome. Adding serology to a survey leveraged resources and provided complementary information.
Background Serological surveys can potentially complement vaccine coverage surveys, such as post-vaccination campaign coverage evaluation surveys (PCES), by providing direct information on population immunity within and outside the target age range of the mass vaccination campaign. We estimate age-specific population immunity to measles and rubella viruses in Southern Province, Zambia, and assess the value of adding serological data to vaccination coverage estimates by nesting a serological survey within a PCES. Methods Dried blood spots (DBS) from fingerprick blood were collected from all individuals ages nine months or older in households participating in the PCES and tested for measles and rubella virus-specific immunoglobulin G (IgG) by enzyme immunoassay (Siemens Enzygnost, Marburg, Germany). Results Overall seroprevalence was 95.5% (95% CI: 92.8, 97.2) for measles virus-specific IgG and 97.7% (95% CI: 96.0, 98.7) for rubella virus-specific IgG. Rubella seroprevalence was 98.4% (95% CI: 95.9, 99.4) among children eligible for the MR vaccination campaign, significantly higher than the reported measles-rubella (MR) vaccination campaign coverage of 89.8% (p = 0.003), and higher than the 91.3% rubella seroprevalence for adolescents and adults 16–30 years of age (p = 0.049). Conclusion Seroprevalence to measles and rubella viruses in children younger than 16 years of age was significantly higher than expected from vaccination coverage estimates, likely reflecting exposure to wild-type viruses and underreporting of vaccination. The serosurvey revealed rubella immunity gaps among women 16–30 years of age, precisely the age group in which protection from rubella is most important to prevent congenital rubella syndrome. Nesting serological surveys within existing surveys can leverage resources and infrastructure while providing complementary information important to immunization programs.
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Affiliation(s)
- Kyla Hayford
- Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA.
| | - Simon Mutembo
- Ministry of Health, Government of the Republic of Zambia, Lusaka, Zambia; Department of Epidemiology and Biostatistics, University of Georgia, College of Public Health, Athens, GA, USA
| | - Andrea Carcelen
- Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | | | | | - Amy Winter
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Jane W Wanyiri
- Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Kelly Searle
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Francis D Mwansa
- Ministry of Health, Government of the Republic of Zambia, Lusaka, Zambia
| | - Angels Mwiche
- Ministry of Health, Government of the Republic of Zambia, Lusaka, Zambia
| | - Caroline Phiri
- Ministry of Health, Government of the Republic of Zambia, Lusaka, Zambia
| | | | | | - William J Moss
- Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA; Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
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Haban H, Benchekroun S, Sadeq M, Tajounte L, Ahmed HJ, Benjouad A, Amzazi S, Oumzil H, Elharti E. Seroprevalence of measles vaccine antibody response in vertically HIV-infected children, in Morocco. BMC Infect Dis 2018; 18:680. [PMID: 30567502 PMCID: PMC6299968 DOI: 10.1186/s12879-018-3590-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Accepted: 12/05/2018] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND The widespread use of an effective and safe vaccine to measles has substantially decreased morbidity and mortality from this epidemic. Nevertheless, HIV-infected children vaccinated against measles may develop an impaired vaccine response and remain susceptible to this disease. In Morocco, infants are routinely vaccinated against measles, regardless of their HIV serostatus. An evaluation of the immunization of these children may be of paramount importance to implement timely measures aimed at preventing measles transmission. METHODS In this study, we have enrolled 114 children vaccinated against measles, 50 children prenatally infected with HIV and 64 HIV-uninfected children. For all children, blood samples were taken to measure anti-measles IgG by EIA and CD4 count by flow cytometry. Additionally, HIV viral load was determined by automated real time PCR, for HIV-infected children. RESULTS The seroprotective rate of IgG anti-measles antibodies was significantly lower among HIV-infected children (26%) compared with HIV-uninfected children (73%) (p < 0.001). Within HIV-infected children group, the comparison of variables between children without seroprotective seroconversion to measles and those with seroprotective immunity, displayed that sex and age were not statistically different, p > 0.999 and p = 0.730, respectively. However, CD4 count was lower among children with negative serostatus to measles (23% versus 32%, p < 0.001). Furthermore, viral load was higher, with 2.91 log10 ± 2.24 versus 1.7 log10 ± 1.5 (p = 0.042). Finally, 62% of children with a negative vaccine response to measles were under HAART therapy, versus 92% (p = 0.008). CONCLUSION The majority of HIV-infected children vaccinated against measles develop a suboptimal seroprotective titer, and therefore remain at risk for this highly infectious disease. These data in combination with international recommendations, including recent WHO guidance on vaccination of HIV-infected children, suggest there is a need for national measures to prevent these children from measles.
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Affiliation(s)
- Houda Haban
- Department of Virology, National Reference Laboratory for HIV, National Institute of Hygiene, Rabat, Morocco
- Immunology-Biochemistry Laboratory, Faculty of Sciences, University Mohamed Vth, Rabat, Morocco
| | - Soumia Benchekroun
- Pediatric Infectious Disease Clinic, Ibn Sina University Hospital, Rabat, Morocco
| | - Mina Sadeq
- Environmental Epidemiology Unit, National Institute of Hygiene, Rabat, Morocco
| | - Latifa Tajounte
- Department of Virology, National Reference Laboratory for Measles, National Institute of Hygiene, Rabat, Morocco
| | | | | | - Said Amzazi
- Immunology-Biochemistry Laboratory, Faculty of Sciences, University Mohamed Vth, Rabat, Morocco
| | - Hicham Oumzil
- Department of Virology, National Reference Laboratory for HIV, National Institute of Hygiene, Rabat, Morocco
| | - Elmir Elharti
- Department of Virology, National Reference Laboratory for HIV, National Institute of Hygiene, Rabat, Morocco
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Mutsaerts EA, Nunes MC, van Rijswijk MN, Klipstein-Grobusch K, Grobbee DE, Madhi SA. Safety and Immunogenicity of Measles Vaccination in HIV-Infected and HIV-Exposed Uninfected Children: A Systematic Review and Meta-Analysis. EClinicalMedicine 2018; 1:28-42. [PMID: 31193646 PMCID: PMC6537570 DOI: 10.1016/j.eclinm.2018.06.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Accepted: 06/08/2018] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND HIV-infected and HIV-exposed uninfected (HEU) children have an increased risk of measles that may be due to altered immune responses or suboptimal timing of measles vaccination. We aimed to evaluate the safety and immunogenicity of measles vaccination in HIV-infected and HEU children. METHODS For this systematic review and meta-analysis, we searched PubMed, Embase, Cochrane Library, CINAHL, Global Health Library and IndMED on May 9, 2018. Studies were included if they reported on safety or seroresponse (either seroprotection/seropositivity/seroconversion) after measles vaccination in HIV-infected or HEU children. We calculated pooled estimates to compare immunogenicity outcomes between HIV-infected, HEU and HIV-unexposed children, using risk ratios [RRs] (with 95%CIs). PROSPERO registration number: CRD42017057411. FINDINGS Seventy-one studies met the inclusion criteria (15,363 children). Twenty-eight studies reported on safety; vaccine-associated adverse events and deaths were uncommon. Sixty-two studies reported on immunogenicity, 27 were included in the meta-analysis. HIV-infected children had lower seroresponse rates after primary vaccination compared with HIV-unexposed (RR 0.74; 95%CI: 0.61-0.90, I 2 = 85.9%) and HEU children (0.78; 0.69-0.88, I 2 = 77.1%), which was mitigated by antiretroviral therapy and time interval between vaccination and serology. HEU and HIV-unexposed children had similar seroresponses. Vaccination at 6-months resulted in similar proportions of HIV-infected children having seroresponse compared with HIV-unexposed (0.96; 0.77-1.19) and HEU children (1.00; 0.73-1.37, I 2 = 63.7%). INTERPRETATION Primary measles vaccination at 6-months of age may provide protection against measles during early infancy in settings with high prevalence of maternal HIV-infection, however, further studies are needed to evaluate this strategy in HEU children and HIV-infected children receiving antiretroviral therapy. FUNDING South African Research Chairs Initiative of the Department of Science and Technology and National Research Foundation in Vaccine Preventable Diseases; Medical Research Council: Respiratory and Meningeal Pathogens Research Unit.
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Affiliation(s)
- Eleonora A.M.L. Mutsaerts
- Medical Research Council, Respiratory and Meningeal Pathogens Research Unit, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
- Department of Science and Technology/National Research Foundation, Vaccine Preventable Diseases, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
- Julius Global Health, Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands
| | - Marta C. Nunes
- Medical Research Council, Respiratory and Meningeal Pathogens Research Unit, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
- Department of Science and Technology/National Research Foundation, Vaccine Preventable Diseases, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Martijn N. van Rijswijk
- Medical Research Council, Respiratory and Meningeal Pathogens Research Unit, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
- Department of Science and Technology/National Research Foundation, Vaccine Preventable Diseases, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
- Julius Global Health, Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands
| | - Kerstin Klipstein-Grobusch
- Division of Epidemiology and Biostatistics, School of Public Health, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
- Julius Global Health, Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands
| | - Diederick E. Grobbee
- Julius Global Health, Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands
- Clinical Epidemiology, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands
| | - Shabir A. Madhi
- Medical Research Council, Respiratory and Meningeal Pathogens Research Unit, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
- Department of Science and Technology/National Research Foundation, Vaccine Preventable Diseases, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
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