Pfizer said the new vaccine, which targets both the original as well as the BA.2 Omicron subvariant, is in an initial proof-of-concept study to gather more data
Source: Pfizer begins mid-stage trial for new vaccine targeting Omicron subvariant
Pfizer said the new vaccine, which targets both the original as well as the BA.2 Omicron subvariant, is in an initial proof-of-concept study to gather more data
Source: Pfizer begins mid-stage trial for new vaccine targeting Omicron subvariant