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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In Europe's growing third surge, more nations report single-day highs, including Portugal and the Czech Republic.
In a US study published today in Science, researchers detected immune memory to SARS-CoV-2 across all immune cell types studied for as long as 8 months after patients became ill with COVID-19.
Antibody testing shows that 14% of Americans had been infected by Nov 15, and 35% of deaths were missed.
Georgia is the 5th state to report a B117 variant case, and San Diego County confirms 28 more variant cases.
The agency says it was disappointed with China over visa problems for the international joint mission and that the B117 variant has been found in 40 nations.
A rapid review and meta-analysis of studies involving more than 35,000 COVID-19 patients has found that three-quarters received antibiotics even though fewer than 10% had a bacterial co-infection, Canadian researchers reported today in Clinical Microbiology and Infection.
Also, Florida and New York confirm their first cases involving the UK variant.
The country's third lockdown will last till at least mid-February.
The phase 3 clinical studies indicate good safety, efficacy for both Moderna and Pfizer vaccines.
Interim study results published late last week in Morbidity and Mortality Weekly Report (MMWR) found that only 19% of people exposed to a COVID-19 patient in their home who had no symptoms nor a positive test result in the first 7 days of the patient's illness later tested positive—lending support for recently changed Centers for Disease Control and Prevention (CDC) guidelines.
