1
|
Sohn Y, Choi HK, Yun J, Kim EH, Kim YK. Clinical Characteristics and Risk of Hypoxemia Development in Women Infected with SARS-CoV-2 during Pregnancy. Yonsei Med J 2024; 65:27-33. [PMID: 38154477 PMCID: PMC10774648 DOI: 10.3349/ymj.2023.0270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 08/31/2023] [Accepted: 09/06/2023] [Indexed: 12/30/2023] Open
Abstract
PURPOSE There is limited information on the clinical characteristics and prognosis of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection during pregnancy. The clinical features and risk factors for hypoxemia development were investigated in pregnant women with coronavirus disease-2019 (COVID-19). MATERIALS AND METHODS From August 2020 to February 2022, we performed a retrospective cohort study of 410 pregnant women with COVID-19. The clinical characteristics and prognoses were compared between pregnant COVID-19 patients requiring oxygen and those who did not. RESULTS Of 410 patients, 100 (24.4%) required oxygen therapy. Among them, fever [163 (52.6%) vs. 81 (81.0%), p<0.001] and cough [172 (56.4%) vs. 73 (73.0%), p=0.003] were more frequently observed than in non-oxygen group. The proportion of unvaccinated women was higher in oxygen group than in non-oxygen group [264 (85.2%) vs. 98 (98.0%), p=0.003]. During the Omicron wave, patients were more likely to have no oxygen requirement [98 (31.6%) vs. 18 (18.0%), p=0.009]. The risk of hypoxemic respiratory difficulty increased if SARS-CoV-2 infection occurred during the third trimester [adjusted odds ratio (aOR) 5.083, 95% confidence interval (CI): 1.095-23.593, p=0.038] and C-reactive protein (CRP) was elevated (≥1.0 mg/dL) at admission (aOR 5.878, 95% CI: 3.099-11.146, p<0.001). The risk was higher in unvaccinated patients (aOR 5.376, 95% CI: 1.193-24.390, p=0.028). However, the risk was lower in patients during the Omicron wave (aOR 0.498, 95% CI: 0.258-0.961, p=0.038). CONCLUSION A quarter of SARS-CoV-2-infected women developed hypoxemic respiratory difficulty during pregnancy. SARS-CoV-2 infection during the third trimester, CRP elevation at admission, and no vaccination increased the risk of hypoxemia in pregnant women.
Collapse
Affiliation(s)
- Yujin Sohn
- Department of Internal Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - Hee Kyoung Choi
- Department of Infectious Diseases, National Health Insurance Service Ilsan Hospital, Goyang, Korea
| | - Jisun Yun
- Department of Obstetrics and Gynecology, National Health Insurance Service Ilsan Hospital, Goyang, Korea
| | - Eui Hyeok Kim
- Department of Obstetrics and Gynecology, CHA Ilsan Medical Center, CHA University School of Medicine, Goyang, Korea.
| | - Young Keun Kim
- Department of Internal Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea.
| |
Collapse
|
2
|
Ouranos K, Vassilopoulos S, Vassilopoulos A, Shehadeh F, Mylonakis E. Cumulative incidence and mortality rate of cardiovascular complications due to laboratory-confirmed influenza virus infection: A systematic review and meta-analysis. Rev Med Virol 2024; 34:e2497. [PMID: 38126946 DOI: 10.1002/rmv.2497] [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: 07/17/2023] [Revised: 10/17/2023] [Accepted: 12/04/2023] [Indexed: 12/23/2023]
Abstract
Influenza infection is associated with cardiovascular complications that range significantly in presentation and severity. The cumulative incidence of cardiovascular complications due to laboratory-confirmed influenza, however, is not reported in the literature. We conducted a systematic review and random-effects meta-analysis to evaluate the cumulative incidence and mortality rate of influenza virus-related cardiovascular complications in hospitalized patients. We searched the PubMed and EMBASE databases for studies reporting acute myocardial infarction (AMI), heart failure (HF), arrhythmia of any kind, stroke or transient ischemic attack (TIA), and myocarditis in hospitalized patients with laboratory-confirmed influenza virus infection. Prospective studies, retrospective cohort studies, and randomized controlled trials (RCTs) were included in the analysis. We followed the PRISMA checklist and used 95% confidence intervals (CIs) to report meta-analysis outcomes. This study was registered on PROSPERO (CRD42023427849). After retrieving 2803 studies, we identified 19 studies (18 observational and 1 RCT) with relevant data, and we included 6936 patients in our analysis, of whom 690 (9.9%) developed a cardiovascular outcome of interest. The cumulative incidence of HF was 17.47% (95% CI: 5.06%-34.54%), arrhythmia of any kind 6.12% (95% CI: 0.00%-21.92%), myocarditis 2.56% (95% CI: 0.66%-5.38%), AMI 2.19% (95% CI: 1.03%-3.72%), and stroke or TIA 1.14% (95% CI: 0.00%-4.05%). The in-hospital mortality rate from cardiovascular events was 1.38% (95% CI: 0.00%-4.80%). Cardiovascular complications occur in patients with influenza virus infection, with the cumulative incidence of specific cardiac manifestations varying considerably (1.51%-17.47%). Preventive strategies and close clinical monitoring after infection remain a priority.
Collapse
Affiliation(s)
- Konstantinos Ouranos
- Department of Medicine, Houston Methodist Research Institute, Houston, Texas, USA
| | - Stephanos Vassilopoulos
- Department of Medicine, Warren Alpert Medical School of Brown University, Rhode Island Hospital, Providence, Rhode Island, USA
| | - Athanasios Vassilopoulos
- Department of Medicine, Warren Alpert Medical School of Brown University, Rhode Island Hospital, Providence, Rhode Island, USA
| | - Fadi Shehadeh
- Department of Medicine, Houston Methodist Research Institute, Houston, Texas, USA
- School of Electrical and Computer Engineering, National Technical University of Athens, Athens, Greece
| | - Eleftherios Mylonakis
- Department of Medicine, Houston Methodist Research Institute, Houston, Texas, USA
- Weill Cornell Medicine, New York, New York, USA
| |
Collapse
|
3
|
Creisher PS, Seddu K, Mueller AL, Klein SL. Biological Sex and Pregnancy Affect Influenza Pathogenesis and Vaccination. Curr Top Microbiol Immunol 2023; 441:111-137. [PMID: 37695427 DOI: 10.1007/978-3-031-35139-6_5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/12/2023]
Abstract
Males and females differ in the outcome of influenza A virus (IAV) infections, which depends significantly on age. During seasonal influenza epidemics, young children (< 5 years of age) and aged adults (65+ years of age) are at greatest risk for severe disease, and among these age groups, males tend to suffer a worse outcome from IAV infection than females. Following infection with pandemic strains of IAVs, females of reproductive ages (i.e., 15-49 years of age) experience a worse outcome than their male counterparts. Although females of reproductive ages experience worse outcomes from IAV infection, females typically have greater immune responses to influenza vaccination as compared with males. Among females of reproductive ages, pregnancy is one factor linked to an increased risk of severe outcome of influenza. Small animal models of influenza virus infection and vaccination illustrate that immune responses and repair of damaged tissue following IAV infection also differ between the sexes and impact the outcome of infection. There is growing evidence that sex steroid hormones, including estrogens, progesterone, and testosterone, directly impact immune responses during IAV infection and vaccination. Greater consideration of the combined effects of sex and age as biological variables in epidemiological, clinical, and animal studies of influenza pathogenesis is needed.
Collapse
Affiliation(s)
- Patrick S Creisher
- Department of Molecular Microbiology and Immunology, Bloomberg School of Public Health, Johns Hopkins University, 615 North Wolfe Street, Baltimore, MD, United States
| | - Kumba Seddu
- Department of Molecular Microbiology and Immunology, Bloomberg School of Public Health, Johns Hopkins University, 615 North Wolfe Street, Baltimore, MD, United States
| | - Alice L Mueller
- Department of Molecular Microbiology and Immunology, Bloomberg School of Public Health, Johns Hopkins University, 615 North Wolfe Street, Baltimore, MD, United States
| | - Sabra L Klein
- Department of Molecular Microbiology and Immunology, Bloomberg School of Public Health, Johns Hopkins University, 615 North Wolfe Street, Baltimore, MD, United States.
| |
Collapse
|
4
|
Schell RC, Macias DA, Garner WH, White AM, McIntire DD, Pruszynski J, Adhikari EH. Examining the impact of trimester of diagnosis on COVID-19 disease progression in pregnancy. Am J Obstet Gynecol MFM 2022; 4:100728. [PMID: 35995369 PMCID: PMC9391234 DOI: 10.1016/j.ajogmf.2022.100728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Revised: 08/02/2022] [Accepted: 08/15/2022] [Indexed: 11/18/2022]
Abstract
BACKGROUND COVID-19 infection is associated with increased morbidity in pregnancy and adverse maternal and neonatal outcomes. Little is currently known about how the timing of infection during pregnancy affects these outcomes. OBJECTIVE This study aimed to evaluate the effect of trimester of COVID-19 infection on disease progression and severity in pregnant patients. STUDY DESIGN This was a prospective cohort study of pregnant patients diagnosed with COVID-19 infection who delivered at a single urban hospital. Universal testing for SARS-CoV-2 was performed at hospital admission and for symptomatic patients in inpatient, emergency department, and outpatient settings. Disease severity was defined as asymptomatic, mild, moderate, severe, or critical on the basis of National Institutes of Health criteria. We evaluated disease progression from asymptomatic to symptomatic infection and from asymptomatic or mild infection to moderate, severe, or critical illness, and stratified by trimester of COVID-19 diagnosis. Primary outcomes included progression of COVID-19 disease severity and a composite obstetrical outcome, which included delivery at <37 weeks, preeclampsia with severe features, abruption, excess blood loss at delivery (>500 mL for vaginal or >1000 mL for cesarean delivery), and stillbirth. RESULTS From March 18, 2020 to September 30, 2021, 1326 pregnant patients were diagnosed with COVID-19 and delivered at our institution, including 103 (8%) first-, 355 (27%) second-, and 868 (65%) third-trimester patients. First-trimester patients were older and had more medical comorbidities; 86% of patients in all trimesters were Hispanic. Among patients admitted within 14 days of a positive test, 3 of 18 (17%) first-trimester, 20 of 47 (43%) second-trimester, and 34 of 574 (6%) third-trimester patients were admitted for the indication of COVID-19 illness. Across all trimesters, 1195 (90%) of 1326 COVID-19 infections were asymptomatic or mild, and 45 (10%) of 436 initially asymptomatic patients developed symptoms. Of patients with asymptomatic or mild symptoms at diagnosis, 4 (4%) of 93 first-, 18 (5%) of 337 second-, and 49 (6%) of 836 third-trimester patients developed moderate, severe, or critical illness (P=.80). There was no significant difference in composite obstetrical outcome with respect to trimester of COVID-19 diagnosis (24% first-trimester, 28% second-trimester, 28% third-trimester patients; P=.69). CONCLUSION Moderate, severe, or critical illness develops in almost 10% of pregnant patients. The frequency of COVID-19 disease progression in pregnancy does not differ by trimester of diagnosis.
Collapse
Affiliation(s)
- Rachel C Schell
- Department of Obstetrics and Gynecology, The University of Texas Southwestern Medical Center, Dallas, TX (Drs Schell, Macias, White, McIntire, Pruszynski, and Adhikari); Parkland Health, Dallas, TX (Drs Schell, Macias, White, and Adhikari).
| | - Devin A Macias
- Department of Obstetrics and Gynecology, The University of Texas Southwestern Medical Center, Dallas, TX (Drs Schell, Macias, White, McIntire, Pruszynski, and Adhikari); Parkland Health, Dallas, TX (Drs Schell, Macias, White, and Adhikari)
| | - W Holt Garner
- School of Medicine, The University of Texas Southwestern Medical Center, Dallas, TX (Mr Garner)
| | - Alesha M White
- Department of Obstetrics and Gynecology, The University of Texas Southwestern Medical Center, Dallas, TX (Drs Schell, Macias, White, McIntire, Pruszynski, and Adhikari); Parkland Health, Dallas, TX (Drs Schell, Macias, White, and Adhikari)
| | - Donald D McIntire
- Department of Obstetrics and Gynecology, The University of Texas Southwestern Medical Center, Dallas, TX (Drs Schell, Macias, White, McIntire, Pruszynski, and Adhikari)
| | - Jessica Pruszynski
- Department of Obstetrics and Gynecology, The University of Texas Southwestern Medical Center, Dallas, TX (Drs Schell, Macias, White, McIntire, Pruszynski, and Adhikari)
| | - Emily H Adhikari
- Department of Obstetrics and Gynecology, The University of Texas Southwestern Medical Center, Dallas, TX (Drs Schell, Macias, White, McIntire, Pruszynski, and Adhikari); Parkland Health, Dallas, TX (Drs Schell, Macias, White, and Adhikari)
| |
Collapse
|
5
|
Otieno NA, Nyawanda BO, McMorrow M, Oneko M, Omollo D, Lidechi S, Widdowson M, Flannery B, Chaves SS, Azziz‐Baumgartner E, Emukule GO. The burden of influenza among Kenyan pregnant and postpartum women and their infants, 2015–2020. Influenza Other Respir Viruses 2022; 16:452-461. [PMID: 35066993 PMCID: PMC8983887 DOI: 10.1111/irv.12950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Accepted: 12/05/2021] [Indexed: 11/30/2022] Open
Abstract
Background In tropical Africa, data about influenza‐associated illness burden are needed to assess potential benefits of influenza vaccination among pregnant women. We estimated the incidence of influenza among pregnant women and their infants in Siaya County, Kenya. Methods We enrolled women at <31 weeks of gestation and conducted weekly follow‐up until 6‐month postpartum to identify acute respiratory illnesses (ARIs). We defined ARI among mothers as reported cough, rhinorrhoea or sore throat and among infants as maternal‐reported cough, difficulty breathing, rhinorrhoea or clinician diagnosis of respiratory illness. We collected nasal/nasopharyngeal and oropharyngeal swabs from mothers/infants with ARI and tested for influenza A and B using molecular assays. We calculated antenatal incidence of laboratory‐confirmed influenza among mothers and postnatal incidence among mothers and infants. Results During June 2015 to May 2020, we analysed data from 3,026 pregnant women at a median gestational age of 16 weeks (interquartile range [IQR], 13, 18) and followed 2,550 infants. Incidence of laboratory‐confirmed influenza during pregnancy (10.3 episodes per 1,000 person‐months [95% confidence interval {CI} 8.6–11.8]) was twofold higher than in the postpartum period (4.0 [95% CI 2.6–5.5]; p < 0.01). Incidence was significantly higher among human immunodeficiency virus (HIV)‐infected pregnant women (15.6 [95% CI 11.0–20.6] vs. 9.1 [95% CI 7.5–10.8]; p < 0.01). Incidence among young infants was 4.4 (95% CI 3.0–5.9) and similar among HIV‐exposed and HIV‐unexposed infants. Conclusion Our findings suggest a substantial burden of influenza illnesses during pregnancy, with a higher burden among HIV‐infected mothers. Kenyan authorities should consider the value of vaccinating pregnant women, especially if HIV infected.
Collapse
Affiliation(s)
- Nancy A. Otieno
- Kenya Medical Research Institute Center for Global Health Research Kisumu Kenya
| | - Bryan O. Nyawanda
- Kenya Medical Research Institute Center for Global Health Research Kisumu Kenya
| | - Meredith McMorrow
- Centers for Disease Control and Prevention, National Center for Immunization and Respiratory Diseases Influenza Division Atlanta Georgia USA
| | - Martina Oneko
- Kenya Medical Research Institute Center for Global Health Research Kisumu Kenya
| | - Daniel Omollo
- Kenya Medical Research Institute Center for Global Health Research Kisumu Kenya
| | - Shirley Lidechi
- Kenya Medical Research Institute Center for Global Health Research Kisumu Kenya
| | - Marc‐Alain Widdowson
- Centers for Disease Control and Prevention Division of Global Health Protection Nairobi Kenya
- Institute of Tropical Medicine Antwerp Belgium
| | - Brendan Flannery
- Centers for Disease Control and Prevention, National Center for Immunization and Respiratory Diseases Influenza Division Atlanta Georgia USA
| | - Sandra S. Chaves
- Centers for Disease Control and Prevention, National Center for Immunization and Respiratory Diseases Influenza Division Atlanta Georgia USA
- Centers for Disease Control and Prevention, Influenza Program Nairobi Kenya
| | - Eduardo Azziz‐Baumgartner
- Centers for Disease Control and Prevention, National Center for Immunization and Respiratory Diseases Influenza Division Atlanta Georgia USA
| | | |
Collapse
|
6
|
Dawood FS, Garg S, Fink RV, Russell ML, Regan AK, Katz MA, Booth S, Chung H, Klein NP, Kwong JC, Levy A, Naleway A, Riesel D, Thompson MG, Wyant BE, Fell DB. Epidemiology and Clinical Outcomes of Hospitalizations for Acute Respiratory or Febrile Illness and Laboratory-Confirmed Influenza Among Pregnant Women During Six Influenza Seasons, 2010-2016. J Infect Dis 2020; 221:1703-1712. [PMID: 31875916 PMCID: PMC10563870 DOI: 10.1093/infdis/jiz670] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Accepted: 12/23/2019] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND Pregnant women are at increased risk of seasonal influenza hospitalizations, but data about the epidemiology of severe influenza among pregnant women remain largely limited to pandemics. METHODS To describe the epidemiology of hospitalizations for acute respiratory infection or febrile illness (ARFI) and influenza-associated ARFI among pregnant women, administrative and electronic health record data were analyzed from retrospective cohorts of pregnant women hospitalized with ARFI who had testing for influenza viruses by reverse-transcription polymerase chain reaction (RT-PCR) in Australia, Canada, Israel, and the United States during 2010-2016. RESULTS Of 18 048 ARFI-coded hospitalizations, 1064 (6%) included RT-PCR testing for influenza viruses, 614 (58%) of which were influenza positive. Of 614 influenza-positive ARFI hospitalizations, 35% were in women with low socioeconomic status, 20% with underlying conditions, and 67% in their third trimesters. The median length of influenza-positive hospitalizations was 2 days (interquartile range, 1-4), 18% (95% confidence interval [CI], 15%-21%) resulted in delivery, 10% (95% CI, 8%-12%) included a pneumonia diagnosis, 5% (95% CI, 3%-6%) required intensive care, 2% (95% CI, 1%-3%) included a sepsis diagnosis, and <1% (95% CI, 0%-1%) resulted in respiratory failure. CONCLUSIONS Our findings characterize seasonal influenza hospitalizations among pregnant women and can inform assessments of the public health and economic impact of seasonal influenza on pregnant women.
Collapse
Affiliation(s)
- Fatimah S. Dawood
- Influenza Division, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Shikha Garg
- Influenza Division, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | | | | | - Annette K. Regan
- School of Public Health, Curtin University, Perth, Western Australia, Australia
| | - Mark A. Katz
- Clalit Health Services, Clalit Research Institute, Tel Aviv, Israel
- School of Public Health, Medical School for International Health, Ben Gurion University, Beer-Sheva, Israel
- University of Michigan School of Public Health, Ann Arbor, Michigan, USA
| | - Stephanie Booth
- Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | | | - Nicola P. Klein
- Kaiser Permanente Vaccine Study Center, Kaiser Permanente Northern California, Oakland, California, USA
| | - Jeffrey C. Kwong
- ICES, Toronto, Ontario, Canada
- Department of Family & Community Medicine, University of Toronto, Toronto, Ontario, Canada
- Public Health Ontario, Toronto, Ontario, Canada
| | - Avram Levy
- PathWest Laboratory Medicine WA, Perth, Western Australia, Australia
| | - Allison Naleway
- Center for Health Research, Kaiser Permanente Northwest, Portland, Oregon, USA
| | - Dan Riesel
- Clalit Health Services, Clalit Research Institute, Tel Aviv, Israel
| | - Mark G. Thompson
- Influenza Division, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | | | - Deshayne B. Fell
- ICES, Toronto, Ontario, Canada
- University of Ottawa, Ottawa, Ontario, Canada
- Children’s Hospital of Eastern Ontario Research Institute, Ottawa, Ontario, Canada
| |
Collapse
|
7
|
Laake I, Tunheim G, Robertson AH, Hungnes O, Waalen K, Håberg SE, Mjaaland S, Trogstad L. Risk of pregnancy complications and adverse birth outcomes after maternal A(H1N1)pdm09 influenza: a Norwegian population-based cohort study. BMC Infect Dis 2018; 18:525. [PMID: 30348103 PMCID: PMC6196446 DOI: 10.1186/s12879-018-3435-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Accepted: 10/05/2018] [Indexed: 12/04/2022] Open
Abstract
Background The effects of maternal influenza infection on the fetus remain unclear. We studied mild influenza and influenza antibodies in relation to birth weight and risks of pre-eclampsia, preterm birth (PTB), and small for gestational age (SGA) birth among the unvaccinated participants in the Norwegian Influenza Pregnancy Cohort. Methods Pregnant women attending a routine ultrasound were recruited from four hospitals in Norway shortly after the 2009 A(H1N1) pandemic. The present study was restricted to unvaccinated participants who were pregnant during the pandemic. Information on the participants was obtained through questionnaires and linkage with national registries. Maternal blood samples were collected at delivery. Women with laboratory-confirmed A(H1N1)pdm09 influenza, a clinical diagnosis of influenza, or self-reported influenza during the pandemic were classified as having had influenza. A(H1N1)pdm09-specific antibodies in serum were detected with the hemagglutination-inhibition assay. Detection of antibodies was considered an indicator of infection during the pandemic in the unvaccinated participants. Odds ratios were estimated with logistic regression. Quantile regression was used to estimate differences in the distribution of birth weight. Results Among the 1258 women included in this study, there were 37 cases of pre-eclampsia, 41 births were PTB, and 103 births were SGA. 226 women (18.0%) had influenza during the pandemic. The majority of cases did not receive medical care, and only a small proportion (1.3%) of the cases were hospitalized. Thus, the cases consisted primarily of women with mild illness. No significant associations between influenza and risk of pre-eclampsia, PTB, or SGA birth were observed. Detection of A(H1N1)pdm09-specific antibodies was associated with a lower 10th percentile of birth weight, β = − 159 g (95% CI − 309, − 9). Conclusions Mild influenza illness during pregnancy was not associated with increased risk of pre-eclampsia, PTB or SGA birth. However, influenza infection during pregnancy may reduce the birth weight of the smallest children.
Collapse
Affiliation(s)
- Ida Laake
- Department of Infectious Disease Epidemiology and Modelling, Norwegian Institute of Public Health, Oslo, Norway.
| | - Gro Tunheim
- Department of Infectious Disease Immunology, Norwegian Institute of Public Health, Oslo, Norway.,K.G. Jebsen Center for Influenza Vaccine Research, University of Oslo, Oslo, Norway
| | - Anna Hayman Robertson
- Department of Infectious Disease Epidemiology and Modelling, Norwegian Institute of Public Health, Oslo, Norway
| | - Olav Hungnes
- Department of Influenza, Norwegian Institute of Public Health, Oslo, Norway
| | - Kristian Waalen
- Department of Influenza, Norwegian Institute of Public Health, Oslo, Norway
| | - Siri E Håberg
- Division for Mental and Physical Health, Norwegian Institute of Public Health, Oslo, Norway
| | - Siri Mjaaland
- Department of Infectious Disease Immunology, Norwegian Institute of Public Health, Oslo, Norway.,K.G. Jebsen Center for Influenza Vaccine Research, University of Oslo, Oslo, Norway
| | - Lill Trogstad
- Department of Infectious Disease Epidemiology and Modelling, Norwegian Institute of Public Health, Oslo, Norway
| |
Collapse
|
8
|
He J, Liu ZW, Lu YP, Li TY, Liang XJ, Arck PC, Huang SM, Hocher B, Chen YP. A Systematic Review and Meta-Analysis of Influenza A Virus Infection During Pregnancy Associated with an Increased Risk for Stillbirth and Low Birth Weight. Kidney Blood Press Res 2017; 42:232-243. [PMID: 28514782 DOI: 10.1159/000477221] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Accepted: 03/27/2017] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND/AIMS Impaired pregnancy outcomes, such as low birth weight are associated with increased disease risk in later life, however little is known about the impact of common infectious diseases during pregnancy on birth weight. The study had two aims: a) to investigate risk factors of influenza virus infection during pregnancy, and b) to analyze the impact of influenza virus infection on pregnancy outcome, especially birth weight. METHODS Prospective and retrospective observational studies found in PubMed, MEDLINE, Embase, Google Scholar, and WangFang database were included in this meta analysis. Data of included studies was extracted and analyzed by the RevMan software. RESULTS Pregnant women with anemia (P=0.004, RR=1.46, 95% CI: 1.13-1.88), obesity (P<0.00001, RR=1.35, 95% CI: 1.25-1.46) and asthma (P<0.00001, RR=1.99, 95% CI: 1.67-2.37) had higher rates of influenza virus infection. Regarding birth outcomes, influenza A virus infection did not affect the likelihood for cesarean section. Mothers with influenza had a higher rate of stillbirth (P=0.04, RR=2.36, 95% CI: 1.05-5.31), and their offspring had low 5-minute APGR Scores (P=0.009, RR=1.39, 95% CI: 1.08-1.79). Furthermore, the rate for birth weight < 2500g (P=0.04, RR=1.71, 95% CI: 1.03-2.84) was increased. CONCLUSION Results of this study showed that anemia, asthma and obesity during pregnancy are risk factors influenza A virus infection during pregnancy. Moreover, gestational influenza A infection impairs pregnancy outcomes and increases the risk for low birth weight, a known risk factor for later life disease susceptibility.
Collapse
Affiliation(s)
- Jing He
- Department of Infectious Diseases, the first Affiliated Hospital of Jinan University, Guangzhou, China
| | - Zhi-Wei Liu
- Department of Infectious Diseases, the first Affiliated Hospital of Jinan University, Guangzhou, China.,Huidong County People's Hospital, Huizhou, China
| | - Yong-Ping Lu
- Department of Infectious Diseases, the first Affiliated Hospital of Jinan University, Guangzhou, China.,Institute of Nutritional Science, University of Potsdam, Nuthetal, Potsdam, Germany
| | - Tao-Yuan Li
- Department of Infectious Diseases, the first Affiliated Hospital of Jinan University, Guangzhou, China
| | - Xu-Jing Liang
- Department of Infectious Diseases, the first Affiliated Hospital of Jinan University, Guangzhou, China
| | - Petra C Arck
- Laboratory for Experimental Feto-maternal Medicine, Department of Obstetrics and Fetal Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Si-Min Huang
- Department of Infectious Diseases, the first Affiliated Hospital of Jinan University, Guangzhou, China
| | - Berthold Hocher
- Department of Infectious Diseases, the first Affiliated Hospital of Jinan University, Guangzhou, China.,Institute of Nutritional Science, University of Potsdam, Nuthetal, Potsdam, Germany.,Institut für Laboratoriumsmedizin Berlin (IFLb), Berlin, Germany.,Department of Embryology, Medical Faculty, Jinan University, Guangzhou, China
| | - You-Peng Chen
- Department of Infectious Diseases, the first Affiliated Hospital of Jinan University, Guangzhou, China
| |
Collapse
|
9
|
Fell DB, Savitz DA, Kramer MS, Gessner BD, Katz MA, Knight M, Luteijn JM, Marshall H, Bhat N, Gravett MG, Skidmore B, Ortiz JR. Maternal influenza and birth outcomes: systematic review of comparative studies. BJOG 2017; 124:48-59. [PMID: 27264387 PMCID: PMC5216449 DOI: 10.1111/1471-0528.14143] [Citation(s) in RCA: 104] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/15/2016] [Indexed: 01/12/2023]
Abstract
BACKGROUND Although pregnant women are considered at high risk for severe influenza disease, comparative studies of maternal influenza and birth outcomes have not been comprehensively summarised. OBJECTIVE To review comparative studies evaluating maternal influenza disease and birth outcomes. SEARCH STRATEGY We searched bibliographic databases from inception to December 2014. SELECTION CRITERIA Studies of preterm birth, small-for-gestational-age (SGA) birth or fetal death, comparing women with and without clinical influenza illness or laboratory-confirmed influenza infection during pregnancy. DATA COLLECTION AND ANALYSIS Two reviewers independently abstracted data and assessed study quality. MAIN RESULTS Heterogeneity across 16 studies reporting preterm birth precluded meta-analysis. In a subgroup of the highest-quality studies, two reported significantly increased preterm birth (risk ratios (RR) from 2.4 to 4.0) following severe 2009 pandemic H1N1 (pH1N1) influenza illness, whereas those assessing mild-to-moderate pH1N1 or seasonal influenza found no association. Five studies of SGA birth showed no discernible patterns with respect to influenza disease severity (pooled odds ratio 1.24; 95% CI 0.96-1.59). Two fetal death studies were of sufficient quality and size to permit meaningful interpretation. Both reported an increased risk of fetal death following maternal pH1N1 disease (RR 1.9 for mild-to-moderate disease and 4.2 for severe disease). CONCLUSIONS Comparative studies of preterm birth, SGA birth and fetal death following maternal influenza disease are limited in number and quality. An association between severe pH1N1 disease and preterm birth and fetal death was reported by several studies; however, these limited data do not permit firm conclusions on the magnitude of any association. TWEETABLE ABSTRACT Comparative studies are limited in quality but suggest severe pandemic H1N1 influenza increases preterm birth.
Collapse
Affiliation(s)
- DB Fell
- Department of Epidemiology, Biostatistics and Occupational HealthMcGill UniversityMontrealQCCanada
- Better Outcomes Registry & Network (BORN)CHEO Research InstituteOttawaONCanada
| | - DA Savitz
- Department of EpidemiologyBrown UniversityProvidenceRIUSA
- Department of Obstetrics and GynecologyBrown UniversityProvidenceRIUSA
| | - MS Kramer
- Department of Epidemiology, Biostatistics and Occupational HealthMcGill UniversityMontrealQCCanada
- Department of PediatricsMcGill University Faculty of MedicineMontrealQCCanada
| | - BD Gessner
- Agence de Médecine PréventiveParisFrance
| | - MA Katz
- Independent ConsultantTel AvivIsrael
| | - M Knight
- National Perinatal Epidemiology UnitUniversity of OxfordOxfordUK
| | | | - H Marshall
- Vaccinology and Immunology Research Trials UnitWomen's and Children's HospitalNorth AdelaideSAAustralia
- School of MedicineUniversity of AdelaideNorth AdelaideSAAustralia
- Robinson Research InstituteUniversity of AdelaideNorth AdelaideSAAustralia
| | | | - MG Gravett
- Department of Obstetrics and GynecologyUniversity of WashingtonSeattleWAUSA
- Global Alliance to Prevent Prematurity and StillbirthSeattle Children'sSeattleWAUSA
| | | | - JR Ortiz
- Initiative for Vaccine ResearchWorld Health OrganizationGenevaSwitzerland
| |
Collapse
|
10
|
Infectious Diseases in Pregnancy. MEDICAL PROBLEMS DURING PREGNANCY 2017. [PMCID: PMC7123818 DOI: 10.1007/978-3-319-39328-5_5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Many infectious diseases have the potential to complicate pregnancy. Some illnesses may only impact maternal health, but others can infect the fetus with possible devastating or long-term sequelae. In this chapter we aim to review common infectious diseases such as urinary tract infections and influenza as well as those that can cause major neonatal morbidity and mortality including TORCH infections. We will also discuss the challenges that pregnancy creates for the management of these infectious diseases as some antibiotics that would typically be used may not be safe for the developing fetus depending on the stage of pregnancy.
Collapse
|
11
|
van Riel D, Mittrücker HW, Engels G, Klingel K, Markert UR, Gabriel G. Influenza pathogenicity during pregnancy in women and animal models. Semin Immunopathol 2016; 38:719-726. [PMID: 27387428 PMCID: PMC7101682 DOI: 10.1007/s00281-016-0580-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2016] [Accepted: 07/01/2016] [Indexed: 11/30/2022]
Abstract
Pregnant women are at the highest risk to develop severe and even fatal influenza. The high vulnerability of women against influenza A virus infections during pregnancy was repeatedly highlighted during influenza pandemics including the pandemic of this century. In 2009, mortality rates were particularly high among otherwise healthy pregnant women. However, our current understanding of the molecular mechanisms involved in severe disease development during pregnancy is still very limited. In this review, we summarize the knowledge on the clinical observations in influenza A virus-infected pregnant women. In addition, knowledge obtained from few existing experimental infections in pregnant animal models is discussed. Since clinical data do not provide in-depth information on the pathogenesis of severe influenza during pregnancy, adequate animal models are urgently required that mimic clinical findings. Studies in pregnant animal models will allow the dissection of involved molecular disease pathways that are key to improve patient management and care.
Collapse
Affiliation(s)
- Debby van Riel
- Heinrich-Pette-Institute, Leibniz Institute for Experimental Virology, Hamburg, Germany
- Erasmus Medical Center, Rotterdam, The Netherlands
| | | | - Geraldine Engels
- Heinrich-Pette-Institute, Leibniz Institute for Experimental Virology, Hamburg, Germany
- Department of Obstetrics and Fetal Medicine, Medical Center Hamburg Eppendorf, Hamburg, Germany
| | - Karin Klingel
- Department of Molecular Pathology, University Hospital Tübingen, Tübingen, Germany
| | - Udo R Markert
- Department of Obstetrics and Gynecology, University Hospital Jena, Jena, Germany
| | - Gülsah Gabriel
- Heinrich-Pette-Institute, Leibniz Institute for Experimental Virology, Hamburg, Germany.
- University of Lübeck, Lübeck, Germany.
| |
Collapse
|
12
|
Nayak S. Influenza Vaccine Requirements in Pregnant Women. J Obstet Gynaecol India 2016; 66:76-80. [PMID: 27046959 PMCID: PMC4818833 DOI: 10.1007/s13224-016-0867-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2016] [Accepted: 02/09/2016] [Indexed: 12/17/2022] Open
Abstract
OBJECTIVE To explore the importance of administering influenza vaccine during pregnancy. MATERIALS AND METHODS An internet search for data, study and position papers was done. Medline and Pubmed were the frequently used search engines besides search for WHO and CDC position statements. The keywords used included, influenza vaccine, pregnancy, outcome, safety and trimesters. RESULTS Search provided studies that had been conducted in developing nations like Bangladesh as well as developed nations like Norway and England. The WHO and CDC status reports were also accessed and studied. CONCLUSION Administration of influenza vaccine is recommended in any trimester of pregnancy, to protect the pregnant woman as well as the newborn child below the age of 6 months from the deleterious effects of influenza. The vaccine is safe and free from side effects.
Collapse
|
13
|
Oboho IK, Reed C, Gargiullo P, Leon M, Aragon D, Meek J, Anderson EJ, Ryan P, Lynfield R, Morin C, Bargsten M, Zansky SM, Fowler B, Thomas A, Lindegren ML, Schaffner W, Risk I, Finelli L, Chaves SS. Benefit of Early Initiation of Influenza Antiviral Treatment to Pregnant Women Hospitalized With Laboratory-Confirmed Influenza. J Infect Dis 2016; 214:507-15. [DOI: 10.1093/infdis/jiw033] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Accepted: 12/24/2015] [Indexed: 11/14/2022] Open
|
14
|
Influenza Illness in Pregnant Indian Women: A Cross-Sectional Study. Infect Dis Obstet Gynecol 2016; 2016:1248470. [PMID: 26903762 PMCID: PMC4745581 DOI: 10.1155/2016/1248470] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2015] [Revised: 12/20/2015] [Accepted: 12/29/2015] [Indexed: 11/18/2022] Open
Abstract
Data about burden of influenza in pregnancy in India are scant. In order to assess the contribution of influenza to acute respiratory illness (ARI) in pregnancy, 266 north Indian pregnant females with febrile ARI were studied from December 2014 to May 2015. Twin nasopharyngeal/oropharyngeal swabs were obtained and tested for influenza viruses by RT-PCR. Fifty (18.8%) patients tested positive for influenza (A/H1N1pdm09 in 41, A/H3N2 in 8, and influenza B Yamagata in 1). Rigors, headache, and a family history of ARI were significantly more frequent in influenza positive patients. Oseltamivir and supportive therapy were administered to all confirmed cases. Nine influenza positive cases needed hospitalization for their respiratory illness, and 5 developed respiratory failure. Of these, 4 (3 in third trimester) succumbed to their illness. We conclude that influenza viruses are a cause of significant morbidity and mortality among pregnant females with ARI in north India. As such, appropriate preventive strategies of influenza vaccination and early initiation of antiviral therapy during illness are stressed.
Collapse
|
15
|
Baik SH, Jeong HS, Kim SJ, Yoon YK, Sohn JW, Kim MJ. A Case of Influenza Associated Fulminant Myocarditis Successfully Treated with Intravenous Peramivir. Infect Chemother 2015; 47:272-7. [PMID: 26788413 PMCID: PMC4716281 DOI: 10.3947/ic.2015.47.4.272] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2015] [Revised: 05/20/2015] [Accepted: 05/22/2015] [Indexed: 11/24/2022] Open
Abstract
We report the case of a patient with fulminant myocarditis caused by influenza A virus, who presented with acute-onset heart failure and cardiogenic shock and was treated successfully with single dose of intravenous peramivir and with pharmacologic hemodynamic support. A 45-year-old Korean woman presented to our emergency department (ED) with shortness of breath and an episode of seizure that developed abruptly 5 hours before she arrived in the ED. She had a history of recurrent epileptic seizure 25 years ago, but denied other specific medical illnesses. In the ED, she was hypoxemic (arterial partial pressure of oxygen, 59.8 mmHg on room air) and chest radiography revealed bilateral alveolar infiltrates. A rapid antigen test for influenza A virus was positive, and she was administered a single dose of peramivir (300 mg) intravenously. Five hours later, the patient's dyspnea had worsened and she was hypotensive (blood pressure, 86/53 mmHg), requiring norepinephrine infusion. Further evaluation disclosed an increased cardiac troponin I level of 1.36 ng/mL and a depressed left ventricular ejection fraction of 30%. Under the diagnosis of influenza A-associated myocarditis and cardiogenic shock, she was managed with continuous critical care in the intensive care unit. On day 3, the patient's dyspnea began to resolve and her ventricular function returned to normal. Real-time polymerase chain reaction assays for influenza viruses in serial nasopharyngeal aspirates were positive for influenza A (hH3N2) with a threshold cycle value of 27.39 on day 2, but these became negative by day 4. The patient recovered and was discharged on day 9 after admission. In conclusion, this case indicates that intravenous peramivir might be an effective antiviral agent for the treatment of severe influenza A virus infection.
Collapse
Affiliation(s)
- Seung Hee Baik
- Division of Infectious Diseases, Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea
| | - Han Saem Jeong
- Division of Infectious Diseases, Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea
| | - Sun Jin Kim
- Department of Biomedical Sciences, Korea University College of Medicine, Seoul, Korea
| | - Young Kyung Yoon
- Division of Infectious Diseases, Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea.; Institute of Emerging Infectious Diseases, Korea University College of Medicine, Seoul, Korea
| | - Jang Wook Sohn
- Division of Infectious Diseases, Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea.; Institute of Emerging Infectious Diseases, Korea University College of Medicine, Seoul, Korea
| | - Min Ja Kim
- Division of Infectious Diseases, Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea.; Institute of Emerging Infectious Diseases, Korea University College of Medicine, Seoul, Korea
| |
Collapse
|
16
|
|
17
|
Influenza and pregnancy: a review of the literature from India. Infect Dis Obstet Gynecol 2015; 2015:867587. [PMID: 25810687 PMCID: PMC4355110 DOI: 10.1155/2015/867587] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2014] [Revised: 01/09/2015] [Accepted: 01/14/2015] [Indexed: 11/30/2022] Open
Abstract
Maternal influenza infection is known to cause substantial morbidity and mortality among pregnant women and young children. Many professional healthcare bodies including the World Health Organization (WHO) have identified pregnant women as a priority risk group for receipt of inactivated seasonal influenza vaccination. However influenza prevention in this group is not yet a public health priority in India. This literature review was undertaken to examine the Indian studies of influenza among pregnant women. Eight Indian studies describing influenza burden and/or outcomes among pregnant women with influenza were identified. In most studies, influenza A (pH1N1) was associated with increased maternal mortality (25–75%), greater disease severity, and adverse fetal outcomes as compared to nonpregnant women. Surveillance for seasonal influenza infections along with higher quality prospective studies among pregnant women is needed to quantify disease burden, improve awareness among antenatal care providers, and formulate antenatal influenza vaccine policies.
Collapse
|
18
|
Sokolow LZ, Naleway AL, Li DK, Shifflett P, Reynolds S, Henninger ML, Ferber JR, Odouli R, Irving SA, Thompson MG. Severity of influenza and noninfluenza acute respiratory illness among pregnant women, 2010-2012. Am J Obstet Gynecol 2015; 212:202.e1-11. [PMID: 25111585 DOI: 10.1016/j.ajog.2014.08.004] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2014] [Revised: 06/23/2014] [Accepted: 08/06/2014] [Indexed: 10/24/2022]
Abstract
OBJECTIVE The objective of the study was to identify characteristics of influenza illness contrasted with noninfluenza acute respiratory illness (ARI) in pregnant women. STUDY DESIGN ARI among pregnant women was identified through daily surveillance during 2 influenza seasons (2010-2012). Within 8 days of illness onset, nasopharyngeal swabs were collected, and an interview was conducted for symptoms and other characteristics. A follow-up telephone interview was conducted 1-2 weeks later, and medical records were extracted. Severity of illness was evaluated by self-assessment of 12 illness symptoms, subjective ratings of overall impairment, highest reported temperature, illness duration, and medical utilization. RESULTS Of 292 pregnant women with ARI, 100 tested positive for influenza viruses. Women with influenza illnesses reported higher symptom severity than those with noninfluenza ARI (median score, 18 vs 16 of 36; P < .05) and were more likely to report severe subjective feverishness (18% vs 5%; P < .001), myalgia (28% vs 14%; P < .005), cough (46% vs 30%; P < .01), and chills (25% vs 13%; P < .01). More influenza illnesses were associated with fever greater than 38.9°C (20% vs 5%; P < .001) and higher subjective impairment (mean score, 5.9 vs 4.8; P < .001). Differences in overall symptom severity, fever, cough, chills, early health care-seeking behavior, and impairment remained significant in multivariate models after adjusting for study site, season, age, vaccination status, and number of days since illness onset. CONCLUSION Influenza had a greater negative impact on pregnant women than noninfluenza ARIs, as indicated by symptom severity and greater likelihood of elevated temperature. These results highlight the importance of preventing and treating influenza illnesses in pregnant women.
Collapse
|
19
|
The National Vaccine Advisory Committee: reducing patient and provider barriers to maternal immunizations: approved by the National Vaccine Advisory Committee on June 11, 2014. Public Health Rep 2015; 130:10-42. [PMID: 25552752 PMCID: PMC4245282 DOI: 10.1177/003335491513000104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/12/2024] Open
|
20
|
Rasmussen SA, Watson AK, Kennedy ED, Broder KR, Jamieson DJ. Vaccines and pregnancy: past, present, and future. Semin Fetal Neonatal Med 2014; 19:161-9. [PMID: 24355683 DOI: 10.1016/j.siny.2013.11.014] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Vaccination during pregnancy with certain vaccines can prevent morbidity and mortality in pregnant women and their infants. However, previous recommendations often focused on the potential risks of vaccines to the fetus when used during pregnancy. In recent years, additional data have become available on the absence of increased risks for adverse events associated with vaccines when administered during pregnancy and on their benefits to mothers and infants. Currently two vaccines - (i) inactivated influenza, and (ii) tetanus toxoid, reduced diphtheria toxoid and acellular pertussis (Tdap) - are recommended for use by all pregnant women by the United States Advisory Committee on Immunization Practices. Here we review the history of vaccination during pregnancy, the current status of recommendations for vaccination during pregnancy in the USA, and the potential for future advances in this area, including key barriers that must be overcome to accommodate these advances.
Collapse
Affiliation(s)
- Sonja A Rasmussen
- Influenza Coordination Unit, Office of Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, GA, USA.
| | | | - Erin D Kennedy
- Immunization Services Division, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Karen R Broder
- Immunization Safety Office, Division of Healthcare Quality Promotion, National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Denise J Jamieson
- Division of Reproductive Health, National Center for Chronic Disease Prevention and Health Promotion, Centers for Disease Control and Prevention, Atlanta, GA, USA
| |
Collapse
|
21
|
Rasmussen SA, Jamieson DJ, Uyeki TM. Effects of influenza on pregnant women and infants. Am J Obstet Gynecol 2012; 207:S3-8. [PMID: 22920056 DOI: 10.1016/j.ajog.2012.06.068] [Citation(s) in RCA: 256] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2012] [Revised: 05/08/2012] [Accepted: 06/28/2012] [Indexed: 12/16/2022]
Abstract
Influenza vaccination during pregnancy has been shown to decrease the risk of influenza and its complications among pregnant women and their infants up to 6 months old. To adequately assess the benefits and potential risks that are associated with the use of influenza vaccine during pregnancy, it is necessary to examine the influenza-associated complications that occur among pregnant women and their children. Pregnant women have been shown to be at increased risk for morbidity and death with influenza illness during seasonal epidemics and pandemics. Newborn infants born to mothers with influenza during pregnancy, especially mothers with severe illness, are at increased risk of adverse outcomes, such as preterm birth and low birthweight. Infants <6 months old who experience influenza virus infection have the highest rates of hospitalization and death of all children. Here we review the risks for influenza-associated complications among pregnant women and infants <6 months old.
Collapse
|
22
|
|
23
|
Pierce M, Kurinczuk JJ, Spark P, Brocklehurst P, Knight M. Perinatal outcomes after maternal 2009/H1N1 infection: national cohort study. BMJ 2011; 342:d3214. [PMID: 21672992 PMCID: PMC3114455 DOI: 10.1136/bmj.d3214] [Citation(s) in RCA: 202] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
OBJECTIVES To follow up a UK national cohort of women admitted to hospital with confirmed 2009/H1N1 influenza in pregnancy in order to obtain a complete picture of pregnancy outcomes and estimate the risks of adverse fetal and infant outcomes. DESIGN National cohort study. SETTING 221 hospitals with obstetrician led maternity units in the UK. PARTICIPANTS 256 women admitted to hospital with confirmed 2009/H1N1 in pregnancy during the second wave of pandemic infection between September 2009 and January 2010; 1220 pregnant women for comparison. MAIN OUTCOME MEASURES Rates of stillbirth, perinatal mortality, and neonatal mortality; odds ratios for infected versus comparison women. RESULTS Perinatal mortality was higher in infants born to infected women (10 deaths among 256 infants; rate 39 (95% confidence interval 19 to 71) per 1000 total births) than in infants of uninfected women (9 deaths among 1233 infants; rate 7 (3 to 13) per 1000 total births) (P < 0.001). This was principally explained by an increase in the rate of stillbirth (27 per 1000 total births v 6 per 1000 total births; P = 0.001). Infants of infected women were also more likely to be born prematurely than were infants of comparison women (adjusted odds ratio 4.0, 95% confidence interval 2.7 to 5.9). Infected women who delivered preterm were more likely to be infected in their third trimester (P = 0.046), to have been admitted to an intensive care unit (P < 0.001), and to have a secondary pneumonia (P = 0.001) than were those who delivered at term. CONCLUSIONS This study suggests an increase in the risk of poor outcomes of pregnancy in women infected with 2009/H1N1, which reinforces the message from studies of maternal risk alone. The health of pregnant women is an important public health priority in future waves of this and other influenza pandemics.
Collapse
Affiliation(s)
- Matthias Pierce
- National Perinatal Epidemiology Unit, University of Oxford, Oxford OX3 7LF, UK
| | | | | | | | | |
Collapse
|