The delay, narrowed approval, and extra study steps raise concerns about the status of and potential added requirements for other COVID vaccines.
Plaque growth can lead to a higher risk of heart attack, stroke, and other life-threatening cardiovascular events for as long as 1 year.
Post-exertional malaise, or exercise intolerance, was seen in 36% of those with long COVID.
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Israelis aged 60 and older given a fourth dose of the Pfizer/BioNTech COVID-19 vaccine amid the Omicron surge had a 64% lower risk of hospitalization and 78% lower risk of death than those who received three doses, suggests an observational study published yesterday in Nature Medicine.
Two thirds of family members restricted from visiting loved ones in the ICU had symptoms of PTSD 3 months later.
Data show a 36% to 68% lower risk of a COVID-19 hospital stay with Omicron.
US cases, now nearing 50,000 per day, are rising fastest in the Midwest and Northeast.
A modeling study estimates that COVID-19 vaccination prevented more than 1.5 million infections, 72,000 hospitalizations, and 19,000 deaths in the first 10 months of vaccination in California, according to a study published late last week in JAMA Network Open.
Also, the WHO revised its assessment of remdesivir, recommending it for mild or moderate infections in high-risk groups.
Only heart disease and cancer killed more Americans than COVID-19, and COVID deaths increased by 1% in 2021 over 2020.
"Policy makers should be largely reassured by people's aggregate capacity to cope."
Extending the time between COVID-19 vaccine doses to over 10 weeks was tied to 11 times higher antibody levels.
A third mRNA dose boosts the immune system to better fight Omicron infections, 2 studies find.
