A new <a href="https://academic.oup.com/cid/advance-article/doi/10.1093/cid/ciab931/6506316?searchresult=1">CDC study published in the journal Clinical Infectious Diseases (CID)</a> shows that flu vaccination protected children against serious flu illness even when they were infected with a flu virus that was <a href="https://www.cdc.gov/flu/about/viruses/change.htm">antigenically different</a> from the vaccine virus.
