Optimizing vaccine allocation for COVID-19 vaccines: potential role of single-dose vaccination.

ABSTRACT: Most COVID-19 vaccines require two doses, however with limited vaccine supply, policymakers are considering single-dose vaccination as an alternative strategy. Using a mathematical model combined with optimization algorithms, we determined optimal allocation strategies with one and two doses of vaccine under various degrees of viral transmission. Under low transmission, we show that the optimal allocation of vaccine vitally depends on the single-dose efficacy (SDE). With high SDE, single-dose vaccination is optimal, preventing up to 22% more deaths than a strategy prioritizing two-dose vaccination for older adults. With low or moderate SDE, mixed vaccination campaigns with complete coverage of older adults are optimal. However, with modest or high transmission, vaccinating older adults fir

SUBMITTER: Matrajt L 

PROVIDER: S-EPMC7814836 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature