Overall vaccine effectiveness was 29% against COVID-19–associated hospitalization.
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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One study shows a 30% lower vaccination rate, and another higher rates of severe disease and death.
An estimated 80,000 to 180,000 healthcare workers died from COVID-19 in the pandemic's first 17 months.
COVID-19 vaccination does not increase the risk of miscarriage during the first trimester of pregnancy, according to a Norwegian case-control study that involved 13,956 women, 5.5% of whom were vaccinated against the virus. The results were published yesterday as a letter to the editor in the New England Journal of Medicine.
Two large studies show very high protection against the more transmissible variant.
Studies look at COVID-19 immune responses in pregnant women.
For the third week in a row, illness numbers in Europe rose, with a 7% jump last week.
Officials are preparing to vaccinate up to 28 million US children aged 5 to 11 as soon as approval is granted.
COVID-19 outpatients were more likely to have more respiratory symptoms if they were overweight or obese, according to a study published yesterday in Influenza and Other Respiratory Viruses.
The FDA may approve "mix and match" boosters, meaning different ones from the vaccine originally received.
"Learnings from negative trials such as this are important."
