AS the government gives booster doses to frontline healthcare workers, the Department of Health (DoH) recommended combinations to ensure that these will be administered safely.

According to the DoH Department Memorandum 2021-0484, or the guidelines on the administration of booster doses for the Priority A1 group, those who received the primary series of Sinovac, AstraZeneca, Pfizer and Moderna are allowed to receive a homologous booster, or a booster shot of the same brand.

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