Emphasizing shared clinical decision-making with providers, the CDC now says healthy children ages 6 to 17 "may" receive COVID vaccination if a parent or guardian wants it.
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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Risk factors for persistent symptoms at 28 days included being unvaccinated at infection, moderate or severe acute illness, longer hospital stays, and underlying health conditions.
Within the first 21 days after diagnosis, the risk of all-cause death was 68 to 81 times higher in COVID-19 patients.
Poor outcomes include illness and death, bacterial infections, more ICU days, and serious conditions such as preeclampsia.
The number of affected COVID-19 survivors is based on the estimated global rate of 10% of infected people and more than 651 million documented cases and is likely an undercount.
The WHO welcomed the new details, but asked for a breakdown by province and more SARS-CoV-2 sequences.
Follow-up investigations in the US and other nations and by the company have not found the same increase.
ICU care for COVID-19 patients averaged $24,200, compared with $4,700 for general-admission patients.
Compared with uninfected pregnant women, the risk of death was more than 7 times higher, and the risk of ICU care was almost quadruple.
US COVID trends show mixed patterns, with cases and hospitalizations down a bit, but deaths up sharply.
The median time to sustained recovery (at least 3 consecutive symptom-free days) was 12 days in the fluvoxamine group and 13 days in placebo recipients.