One of the main circulating influenza viruses has changed and the current flu vaccines don't match it well any more -- an indication they may not do much to prevent infection, researchers reported Thursday. But they are still likely to prevent severe illness.
원문출처 : https://www.cnn.com/2021/12/16/health/flu-vaccine-mismatch/index.html
원문출처 : https://www.cnn.com/2021/12/16/health/flu-vaccine-mismatch/index.html