The government started vaccinating older people against COVID-19 on Monday, making them the second group to be inoculated, following health care workers, as concerns over a fourth wave of the pandemic grow.
Authorities are planning to secure enough shots of the vaccine, developed by U.S. pharmaceutical company Pfizer Inc., for roughly 36 million people age 65 or older and deliver them to municipalities by late June.
Those people, who compose around 29% the population, tend to develop more serious symptoms than others when infected with the virus.