Mexico City officials will begin offering a third Covid-19 vaccine dose to residents over the age of 60 as part of a government plan to roll out booster shots, Reuters reports.

President Andres Manuel Lopez Obrador said last week the third doses would be made available as soon as possible, beginning with elderly people who are more vulnerable to the coronavirus.

The first booster shots in the massive capital of nearly 10 million people will be AstraZeneca doses given to residents of the southern Tlalpan neighbourhood, officials told a news conference.