Table 2.

Characteristics of the vaccines used in the simulations, in terms of overall efficacy and interval between doses (when applicable). Of note, the recommended inter-dose interval for Pfizer-BioNTech vaccines is 21–28 days [43]. However, for countries that face a high incidence of COVID-19 cases and that have not yet achieved safe vaccination coverage rates, the World Health Organization recommends that the interval between doses be extended to 12 weeks [44], which has been adopted all states of Brazil.

vaccine	efficacy	dosage	source
Janssen	66.9%	single-dose	[45]
Oxford-AstraZeneca	76%	two doses, 12 weeks apart	[46]
Pfizer-BioNTech	95%	two doses, 12 weeks apart	[43]
Sinovac	50.34%	two doses, 4 weeks apart	[47]