UK chief medical officers defend delay of second Pfizer Covid-19 vaccine doses

The UK’s chief medical officers have defended a decision to delay second doses of the Pfizer/BioNTech vaccine in order to prioritize first doses, saying it will protect as many vulnerable people as possible while the coronavirus is running rampant.

The UK’s chief medical officers have defended a decision to delay second doses of the Pfizer/BioNTech vaccine in order to prioritize first doses, saying it will protect as many vulnerable people as possible while the coronavirus is running rampant.