[https://www.nytimes.com/2021/12/08/health/pfizer-booster-omicron.html?pageType=LegacyCollection&collectionName=Covid-19+Vaccines&label=Covid-19+Vaccines&module=hub_Band®ion=inline&template=storyline_band_recirc](https://www.nytimes.com/2021/12/08/health/pfizer-booster-omicron.html?pageType=LegacyCollection&collectionName=Covid-19+Vaccines&label=Covid-19+Vaccines&module=hub_Band®ion=inline&template=storyline_band_recirc) >"The company’s finding is based on only a small study of blood samples in a laboratory, but others are sure to follow."