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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Also, protection against serious Omicron illness drops by 4 months after a third dose but is still high, new data show.
Rural counties with low COVID-19 vaccination rates had 2.4 times the risk of infection.
A new study on outcomes among infants whose mothers received the Pfizer-BioNTech mRNA vaccine in pregnancy showed that no detrimental outcomes were associated with maternal vaccination, including preterm birth, small birth weight for gestational age (SGA), congenital malformations, and infant death.
It was published yesterday in JAMA Pediatrics.
Division 1 student athletes had about half the risk of testing positive in 2020-21.
Upon approval, 10 million Pfizer vaccine doses will be ready to ship on Feb 21 and Feb 25.
A study in Qatar estimates that previous COVID-19 infection imparts 56% protection against future symptomatic infection caused by the highly transmissible Omicron variant, down from about 90% for other SARS-CoV-2 strains.
The study, published yesterday in the New England Journal of Medicine (NEJM), was led by researchers at Weill Cornell Medicine–Qatar in Doha.
However, COVID-19 deaths—known to be a lagging indicator—continue to rise, the WHO says.
"We are encouraged by current trends, but we are not there yet."
A prospective cohort study of US children diagnosed as having COVID-19 reveals that certain demographic characteristics, preexisting chronic diseases, and initial vital sign and lab values may portend disease severity, a finding that the researchers said could help improve outcomes.
COVID-19 raises the risk of serious complications or death 40%, new data show.
