Current vaccine strains show high neutralization against the latest variants, but the LP.8.1 antigen may provide similar or moderately higher cross-reactive antibody response.
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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COVID-19 mRNA vaccine effectiveness (VE) against infection was 5% to 7% higher when the two primary doses were given at least 7 weeks rather than 3 to 5 weeks apart, according to an observational study of hospital and community healthcare workers (HCWs) in British Columbia published late last week in Open Forum Infectious Diseases.
Certain psychiatric disorders may predispose fully vaccinated COVID-19 survivors to reinfection.
In China, officials say they will help key industries resume operations in Shanghai.
Rates of upper airway infections (UAIs) such as croup and bacterial tracheitis among pediatric COVID-19 patients, though low, rose after the Omicron variant became dominant in December 2021, with more than one fifth of hospitalized children with both conditions developing severe illness, estimates a study today in JAMA Pediatrics.
In Shanghai, officials maintain no one has died from Omicron—an assertion being challenged.
Compared with a third dose, fourth-dose protection was 64% against severe disease and 76% against death.
In its first evaluation of COVID-19 exposures among US healthcare professionals (HCPs) over the first year of the pandemic, the Centers for Disease Control and Prevention (CDC) reports that most HCPs were likely infected at work rather than in the community.
The CDC extends the mask order for public transit by 2 weeks and revamps international travel alerts.
COVID-19 exposed existing US public health weaknesses, especially along racial lines.
