Taiwan’s Central Epidemic Command Center (CECC) recently announced guidelines for the 11th round of COVID-19 vaccinations. Those eligible for the first dose of Pfizer-BioNTech, and the second dose of either Moderna or AstraZeneca PLC respectively may start booking their appointments next week. Questions were also raised on whether different vaccine brands may be taken as substitutes due to the significantly higher count of Pfizer-BioNTech vaccines available compared to the other brands.