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COVID-19 Update | November 23, 2021



COVID-19 Update


  • COVID-19
  • Disease Management


coronavirus COVID-19

This report from the Missouri Hospital Association is designed to help you stay abreast of recent developments related to COVID-19.

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Dashboard Spotlight

COVID-19 Booster Doses Now Available To All Adults As New Cases And Breakthrough Infections Grow

Staff Contact: Mat Reidhead or Jackie Gatz

Late last week, the U.S. Food and Drug Administration and Centers for Disease Control and Prevention approved COVID-19 vaccine booster doses for all individuals ages 18 and older. The added guidance provides expanded eligibility for all adult prime series recipients of the two-dose mRNA Pfizer-BioNTech and Moderna vaccines six months following vaccine completion. Adult recipients of the single-dose Johnson & Johnson vaccines previously were approved for booster doses of any type two months following prime series completion.

The expanded eligibility for booster doses came on the heels of the Missouri Department of Health and Senior Services releasing some of the most comprehensive national data on breakthrough infections through a partnership with MHA and the Hospital Industry Data Institute. Initial analyses show that while only 1.8% of fully vaccinated Missourians have experienced a breakthrough infection, the portion of new cases among fully vaccinated individuals has grown sharply with waning protection over time, as well as the introduction of the Delta variant as the dominant circulating strain. Historical hospital claims data from HIDI also reveal that underlying risk factors and age are significantly associated with those experiencing breakthrough infections. The data also show variation in the likelihood of experiencing a breakthrough infection by the type of vaccine originally received, with 3.1% of J&J recipients having a breakthrough infection compared to just 1.8% of all fully vaccinated individuals.

During the previous three weeks and leading into the holiday season, new COVID-19 cases have increased by 46%. Considering emerging data on the efficacy of booster doses, COVID-19 vaccines offer a significant opportunity to moderate the impact of potential seasonal surges during the winter of 2021-2022 in Missouri.

COVID-19 Booster Doses Now Available To All Adults As New Cases And Breakthrough Infections Grow


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