Vaccine effectiveness for preventing COVID-19 hospital admission during pregnancy: a population-based cohort study in England during the Alpha and Delta waves of the SARS-CoV-2 pandemic.
Bosworth ML., Schofield R., Ayoubkhani D., Charlton L., Nafilyan V., Khunti K., Zaccardi F., Gillies C., Akbari A., KNIGHT M., WOOD R., Hardelid P., Zuccolo L., Harrison C.