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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The risk is 1 case in 1 million vaccinated, compared with 200 in 1 million unvaccinated adolescents.
The WHO says the more transmissible BA.2 Omicron subvariant is now dominant in 18 nations.
Two independent UK studies published yesterday in PLOS Medicine find only a very slight risk of blood clots in the brain after receipt of the AstraZeneca/Oxford COVID-19 vaccine and none after the Pfizer/BioNTech vaccine. Both studies were led by University of Edinburgh researchers.
Three Moderna doses were more effective against Delta than against Omicron, and protection waned over time, but they were highly protective against hospitalization with either subtype.
In US news, the FDA is considering whether a fourth mRNA COVID-19 vaccine dose will be necessary.
Infection with the SARS-CoV-2 Omicron BA.2 subvariant shortly after an initial infection with the Omicron BA.1 subvariant—the original Omicron strain—is rare, occurring mostly in young, unvaccinated people with mild symptoms, according to a non–peer-reviewed Danish study.
The new UK COVID-19 plan was met with strong pushback from several in the science and medical communities.
Lower percentages of US children visited an emergency department (ED) for any indication amid the COVID-19 pandemic, while adolescent girls accounted for the largest hikes in visits for mental illness, according to two Centers for Disease Control and Prevention (CDC) studies published late last week in Morbidity and Mortality Weekly Report (MMWR).
In the ivermectin group, 22% became severely ill, vs 17% in the standard-care group.
A meeting of 53,000 people was not a super-spreader, with social contact outside the center being a risk factor.
