Covid vaccines for kids? Strategies around the world

A teenager receives the first dose of the Pfizer/BioNTech Covid-19 vaccine in Tegucigalpa, on September 25, 2021

A medical worker administers a dose of the Pfizer vaccine against Covid-19 coronavirus to a school student at a vaccination centre in southern Thailand's Pattani province on October 7, 2021

Pfizer on Thursday requested emergency approval from US health authorities to use its Covid jab in children aged five to 11.  

Pfizer tested its jab on more than 2,000 US children aged five to 11 and submitted results to the US Food and Drug Administration (FDA) for approval.