Medical Health Cluster


Safety Monitoring of COVID-19 Vaccine Booster Doses Among Persons Aged 12–17 Years — United States, December 9, 2021–February 20, 2022

Summary What is already known about this topic? Adults aged ≥18 years reported adverse reactions less frequently after receipt of a homologous Pfizer-BioNTech COVID-19 booster dose than after the second primary dose. What is added by this report? Among persons aged 12–17 years, reactions after Pfizer-BioNTech booster vaccination were generally […]

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Moderna Makes Case for Fourth COVID Vaccine Booster This Year, Shares Jump

Moderna Inc executives said on Thursday they believe a fourth COVID-19 vaccine shot will be needed late this year due to waning protection from earlier doses, which could push up sales in the second half of 2022. Chief Executive Stephane Bancel stressed that the company’s current sales projections for its […]

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CDC: Time Blunts COVID-19 Booster Shot Protection Too

Protection against COVID-19 waned 4 to 5 months after a third dose of Pfizer (Comirnaty) or Moderna’s (Spikevax) vaccine, with steeply declining protection against emergency department (ED) visits as well as hospitalization during Omicron, researchers found. During the Omicron period, vaccine effectiveness (VE) against ED or urgent care visits was […]

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COVID Booster Protection May Wane in About 10 Weeks, New Data Show

Booster shot protection against symptomatic COVID-19 caused by the Omicron variant appears to fade in about 10 weeks, according to new data from Britain. U.K. health officials shared the data just before Christmas and noted that there haven’t been enough severe cases of the Omicron variant to calculate how well boosters protect […]

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