Janice Kew And Antony Sguazzin Bloomberg

A two-dose course of Pfizer Inc. and BioNTech SE's Covid-19 shot as well as a previous infection with the disease may give stronger protection against the omicron variant, scientists from the Africa Health Research Institute in South Africa said.

A two-dose course of Pfizer Inc. and BioNTech SE's Covid-19 shot as well as a previous infection with the disease may give stronger protection against the omicron variant, scientists from the Africa Health Research Institute in South Africa said.