Flu vaccines protect against four different flu viruses and vaccination could still prevent serious outcomes in people who are vaccinated but still get sick. This week CDC also reported an additional three flu-related pediatric deaths, bringing the total this season to 13.ĬDC continues to recommend flu vaccination as long as flu viruses are circulating and even when protection against one virus is reduced. More than 2,000 people were hospitalized with flu nationally during the week ending March 12, 2022. Additionally, the number of flu-related hospital admissions reported nationally to HHS-Protect increased for the sixth week in a row. Nationally almost 7 percent of respiratory specimens tested at clinical labs were positive for flu during the week ending March 12, 2022, but this proportion varied across the country with highest proportions occurring in the central and south-central parts of the country and the lowest proportions occurring in the Pacific northwest and southeast. Vaccination also could protect against illness caused by other flu viruses if those begin to circulate more commonly later this season.Īccording to CDC’s surveillance systems, the proportion of respiratory specimens testing positive for flu in clinical laboratories nationally has increased for six weeks. While preliminary vaccine effectiveness estimates suggest that this season’s vaccines have not reduced the risk of mild to moderate illness caused by the most common H3N2 viruses, vaccination has been shown in the past to offer protection against more serious outcomes in people who get vaccinated but still get sick.
Flu activity is hard to predict, and CDC believes that flu vaccination at this time could still be beneficial for people who have not yet been vaccinated. This is an unusual time for flu activity to be increasing, and it is unclear how long increases will continue. Currently, activity is highest and increasing fastest in the central and south-central parts of the country. March 18, 2022-CDC’s most recent FluView report shows that flu activity is increasing across most of the United States after declining from mid-December through January.
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