TY - JOUR
T1 - Association of common maternal infections with birth outcomes
T2 - a multinational cohort study
AU - He, Jian Rong
AU - Tikellis, Gabriella
AU - Paltiel, Ora
AU - Klebanoff, Mark
AU - Magnus, Per
AU - Northstone, Kate
AU - Golding, Jean
AU - Ward, Mary H.
AU - Linet, Martha S.
AU - Olsen, Sjurdur F.
AU - Phillips, Gary S.
AU - Lemeshow, Stanley
AU - Qiu, Xiu
AU - Hirst, Jane E.
AU - Dwyer, Terence
N1 - Publisher Copyright:
© Springer-Verlag GmbH Germany, part of Springer Nature 2024.
PY - 2024/8
Y1 - 2024/8
N2 - Purpose: It is unclear whether common maternal infections during pregnancy are risk factors for adverse birth outcomes. We assessed the association between self-reported infections during pregnancy with preterm birth and small-for-gestational-age (SGA) in an international cohort consortium. Methods: Data on 120,507 pregnant women were obtained from six population-based birth cohorts in Australia, Denmark, Israel, Norway, the UK and the USA. Self-reported common infections during pregnancy included influenza-like illness, common cold, any respiratory tract infection, vaginal thrush, vaginal infections, cystitis, urinary tract infection, and the symptoms fever and diarrhoea. Birth outcomes included preterm birth, low birth weight and SGA. Associations between maternal infections and birth outcomes were first assessed using Poisson regression in each cohort and then pooled using random-effect meta-analysis. Risk ratios (RR) and 95% confidence intervals (CI) were calculated, adjusted for potential confounders. Results: Vaginal infections (pooled RR, 1.10; 95% CI, 1.02–1.20) and urinary tract infections (pooled RR, 1.17; 95% CI, 1.09–1.26) during pregnancy were associated with higher risk of preterm birth. Similar associations with low birth weight were also observed for these two infections. Fever during pregnancy was associated with higher risk of SGA (pooled RR, 1.07; 95% CI, 1.02–1.12). No other significant associations were observed between maternal infections/symptoms and birth outcomes. Conclusion: Vaginal infections and urinary infections during pregnancy were associated with a small increased risk of preterm birth and low birth weight, whereas fever was associated with SGA. These findings require confirmation in future studies with laboratory-confirmed infection diagnosis.
AB - Purpose: It is unclear whether common maternal infections during pregnancy are risk factors for adverse birth outcomes. We assessed the association between self-reported infections during pregnancy with preterm birth and small-for-gestational-age (SGA) in an international cohort consortium. Methods: Data on 120,507 pregnant women were obtained from six population-based birth cohorts in Australia, Denmark, Israel, Norway, the UK and the USA. Self-reported common infections during pregnancy included influenza-like illness, common cold, any respiratory tract infection, vaginal thrush, vaginal infections, cystitis, urinary tract infection, and the symptoms fever and diarrhoea. Birth outcomes included preterm birth, low birth weight and SGA. Associations between maternal infections and birth outcomes were first assessed using Poisson regression in each cohort and then pooled using random-effect meta-analysis. Risk ratios (RR) and 95% confidence intervals (CI) were calculated, adjusted for potential confounders. Results: Vaginal infections (pooled RR, 1.10; 95% CI, 1.02–1.20) and urinary tract infections (pooled RR, 1.17; 95% CI, 1.09–1.26) during pregnancy were associated with higher risk of preterm birth. Similar associations with low birth weight were also observed for these two infections. Fever during pregnancy was associated with higher risk of SGA (pooled RR, 1.07; 95% CI, 1.02–1.12). No other significant associations were observed between maternal infections/symptoms and birth outcomes. Conclusion: Vaginal infections and urinary infections during pregnancy were associated with a small increased risk of preterm birth and low birth weight, whereas fever was associated with SGA. These findings require confirmation in future studies with laboratory-confirmed infection diagnosis.
KW - Cohort study
KW - Fetal growth
KW - Maternal infection
KW - Preterm birth
UR - http://www.scopus.com/inward/record.url?scp=85192693803&partnerID=8YFLogxK
U2 - 10.1007/s15010-024-02291-0
DO - 10.1007/s15010-024-02291-0
M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???
C2 - 38733459
AN - SCOPUS:85192693803
SN - 0300-8126
VL - 52
SP - 1553
EP - 1561
JO - Infection
JF - Infection
IS - 4
ER -