On 15 February 2021, Mexico began mass COVID-19 vaccination for people over sixty. Reuters reported long lines and delays on the first day, with some citizens expressing frustration at the organisation. At the time, the national death toll had exceeded 174,000, and older people were the programme's priority group.

What distinguishes this queue is that older residents had to gather and wait during an epidemic in order to receive protection from it. Priority had been defined in policy, but vaccination still advanced one person at a time according to each site's capacity.