The booster is expected to trigger a strong immune response against both the original SARS-CoV-2 strain as well as the Omicron BA.4/BA.5 subvariants," Health Canada said in a media statement.
Moderna 新苗是抗原株和抗BA1株各半的二价疫苗，Pfizer新苗（Pfizer's new bivalent COVID-19 vaccine）是抗原株和BA4/BA5，到底是二价还是三价？
