The risk of long COVID was two to three times higher after the initial infection (14.8%) than after first (5.8%) or second (5.3%) reinfections.
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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UK researchers have uncovered the novel mechanism behind rare abnormal blood clotting seen in some AstraZeneca/Oxford vaccine recipients, according to a study today in the New England Journal of Medicine.
Should studies show COVID-19 effectiveness, fluvoxamine's supply chain looks resilient, an expert says.
COVID-19 poses 8 to 10 times the risk of blood clots in the brain than do COVID vaccines, a preprint study finds.
"This has put Brazil in a permanent state of mourning and led to the near collapse of Brazil's health system."
About 43% of Republicans, 5% of Democrats, and 22% of Independents say no to the vaccine.
The P1 SARS-CoV-2 variant, which was first identified in Brazil, may be more than twice as transmissible as non-P.1 lineages, and it may lower protective immunity from non-P1 variants 21% to 46%, according to a study published yesterday in Science.
ACIP experts will gather more data and likely meet again in 7 to 10 days.
"Exercise is medicine that everyone should take—especially in this era of COVID-19."
PAHO's director says South America continues to be an epicenter but is not acting like it by easing mitigations steps.
Keeping middle seats vacant on air flights has the potential to cut transmission of virus particles by 57% when multiple passengers are infected and by 23% when a single passenger is infected, according to an aerosol dispersion study that included earlier data that modeled plane airflow.
