Persistence of immune responses to the Sinopharm/BBIBP-CorV vaccine.
Chandima JeewandaraInoka Sepali AberathnaPradeep Darshana PushpakumaraAchala KamaladasaDinuka GurugeAyesha WijesingheBanuri GunasekeraShyrar Tanussiya RamuHeshan KuruppuThushali RanasingheShashika DayarathnaOsanda DissanayakeNayanathara GamalathDinithi EkanayakeJeewantha JayamaliDeshni JayathilakaMadushika DissanayakeTibutius Thanesh JayadasAnushika MudunkotuwaGayasha SomathilakeMichael HarvieThashmi NimashaSaubhagya DanasekaraRuwan WijayamuniLisa SchimanskiPramila RijalTiong K TanTao DongAlain TownsendGraham S OggGathsaurie Neelika MalavigePublished in: Immunity, inflammation and disease (2022)
Antibody responses declined in all age groups, especially in those ≥60 years, while T cell responses persisted. The effect of waning of immunity on hospitalization and severe disease should be assessed by long term efficacy studies.