Preexisting Yellow Fever Virus and West Nile Virus Immunity and Pregnancy Outcomes in a Nigerian Cohort with Endemic Orthoflavivirus Exposure

This study investigates how preexisting immunity to yellow fever virus and West Nile virus influences pregnancy outcomes in a Nigerian cohort exposed to endemic orthoflaviviruses. The authors analyze serological and clinical data to assess associations between prior flavivirus exposure and maternal or neonatal health outcomes. The findings contribute to understanding the immunological and epidemiological interactions among flaviviruses in endemic regions and their implications for maternal health, vaccine strategies, and infectious disease surveillance.