Only treatment within 10 days of COVID-19 diagnosis was associated with lower risk.
The second infection was also tied to a 50% or greater increase in several specific long-COVID conditions, including myocarditis and fatigue.
Those who became infected with COVID had higher levels of gene expression for two key proteins, ACE2 and TMPRSS2.
For the seventh week in a row, indicators show that US influenza activity is dropping, but it's still above baseline levels.
But prison populations remained about the same during the entire crisis.
Only 7 jurisdictions are still reporting high flu activity, and, for COVID, wastewater detections returned to the low level.
Children and adolescents were at higher risk for new-onset mild and moderate chronic kidney disease from 2020 to 2023.
The highest risk of transmission of SARS-CoV-2 was in the first 72 hours at room temperature and first 24 hours at 37℃.
On average, workers who received Novavax had 1.7 systemic symptoms, compared with 2.8 in Pfizer recipients.
Older adults and those with metabolic conditions such as obesity also received significant benefits against stroke and death.
Among the 25% of participants in 1 study who said they experienced long-COVID symptoms, 13% reported sleep disorders.
One state, however—New York—reports high activity of influenza-like illness.
A study at a fertility clinic in China ties COVID-19 exposure to reduced sperm count and lower sperm motility.
Flu-related deaths in children climb to 204, up 6 from the previous week, the CDC says.
Models find no difference in all-cause death rates, 30-day hospital readmission, or length of stay before and after restrictions were put into place.
