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 authors say the data support the CDC's prioritization of this group for vaccination.
Elsewhere, the UK says new cases involving SARS-CoV-2 variants are dropping sharply.
Patients critically ill with COVID-19 infections had significantly lower levels of antibodies against seasonal human coronaviruses (HCoVs) OV43 and HKU1 than those with mild to severe infections, according to a German study published yesterday in the International Journal of Infectious Diseases.
It took only 1 month for the nation's death tally to grow from 400,000 to 500,000.
Giving the second dose at 3 months resulted in up to 47% greater protection than giving it at 6 weeks.
Tedros urges vaccine companies to prioritize COVAX contracts and for high-income countries to avoid signing new contracts that deplete the global supply.
People who received their flu vaccine were less likely to test positive for COVID-19, and if they were infected with the virus, they were less likely to need hospitalization, mechanical ventilation, or a longer hospital stay, according to a study published today in the American Journal of Infection Control.
Experts in health-system pharmacy say the potential for major disruptions will increase.
G7 leaders pledge more than $4 billion more to COVAX; deliveries to lower-resource nations begin soon.
New studies and regulatory requests from Pfizer could pave the way for more pregnant women to be vaccinated and more developing nations to receive vaccine.
