Table 2. Summary of scenarios.

	Vaccination rate assumptions
Description	Current rate maintained	Current rate reduced by 30%	Current rate increased by 30%
Assumption: the viral transmission rate changes after June 15th.	β1 = 0.4	β1 = 0.4	β1 = 0.4
	β2 = 0.5	β2 = 0.5	β2 = 0.5
Assumption: the effective population proportion changes after June 15th.	ω1 = 0.3	ω1 = 0.3	ω1 = 0.3
	ω2 = 0.5	ω1 = 0.5	ω1 = 0.5

Changes in vaccination rates are paired with changes in the effective population proportion (ω) or the transmission rate (β). Model for the baseline scenario is fitted using updated data through May 18, 2021, generating parameters as in Table 1.