Waning vaccine response to severe COVID-19 outcomes during omicron predominance in Thailand.
Kannikar IntawongSuwat ChariyalertsakKittipan ChalomThanachol WonghirundechaWoravut KowatcharakulAksara ThongprachumNarain ChotirosniramitKajohnsak NoppakunKrit KhwanngernWorachet TeacharakPrapon PiamanantPannawich ChantaklangPimpinan KhammawanPublished in: PloS one (2023)
Booster doses provided high levels of protection against severe COVID-19 with omicron, up to 4 months. Repeat boosters will be required to continue protection beyond 4 months, particularly in the elderly. mRNA and viral vector vaccines can be used flexibly to improve booster coverage.