FILE PHOTO: A health worker wearing personal protective equipment (PPE) as protection against the coronarivus disease (COVID-19) transports a suspected COVID-19 patient, at Sta. Ana Hospital, in Manila,...

FILE PHOTO: Corazon Abaya receives her first dose of Sinovac Biotech’s CoronaVac vaccine against the coronavirus disease (COVID-19) during a house to house vaccination, in Manila, Philippines, May...