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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The CDC says BQ.1 and BQ.1.1 are spreading fairly quickly but still make up only a small proportion of all variants.
A study published late last week in JAMA Network Open links systemic symptoms—those that affect the entire body—after receipt of two doses of mRNA COVID-19 vaccine with stronger SARS-CoV-2 antibody responses than in vaccinees with no or localized symptoms.
Study adds further evidence that the antiparasitic drug is ineffective as a COVID-19 treatment.
A third of US active-duty military service members who tested positive for COVID-19 reported new-onset or more difficulty with exercise and daily activities 1 month after diagnosis, but these symptoms diminished to pre-infection levels after 6 to 9 months, according to research presented at this week's Infectious Diseases Society of America (IDSA) ID Week in Washington, DC.
The vaccine in kids 6 months to 5 years triggered similar immune response and protection as in young adults.
The vaccine advisory group for the Centers for Disease Control and Prevention (CDC) today approved changes to the child and adolescent immunization schedule, which adds COVID-19 vaccine to the recommended immunizations. The recommendation by the Advisory Committee on Immunization Practices (ACIP) passed on a unanimous 15-to-0 vote.
On top of 2020 losses, life expectancy fell further in 2021 in 12 countries, including the US.
The emergence of several more Omicron subvariants adds uncertainty about COVID in the months ahead.
Among a group of vaccinated college athletes who tested positive for COVID-19 and underwent rapid antigen testing 7 days later, 27% were still positive—a proportion that climbed to 35% in symptomatic athletes and 40% in those infected with the Omicron BA.2 subvariant.
Recent vaccination with 2 or 3 vaccine doses was linked to fewer symptoms, shorter illness, fewer medical visits, and smaller viral load.
