The delay, narrowed approval, and extra study steps raise concerns about the status of and potential added requirements for other COVID vaccines.
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 cases jumped 18% last week and are at their highest levels since April, the WHO says.
Symptoms of long COVID are more frequently reported by women, those with poor overall health before the pandemic, and those aged 50 to 60, according to a new UK-based study in Nature Communications.
The study was based on results gathered from 6,907 people with self-reported COVID-19 from 10 population-based longitudinal health surveys in the United Kingdom that had been in place prior to the pandemic.
VRBPAC experts approved the booster recommendation by a 17-to-2 vote.
A new study from researchers at Boston University (BU) shows that, for all but 17% of healthy, vaccinated young adults, the infectious period for COVID-19 from the Delta and Omicron variants was 5 days. The study was recently published in Clinical Infectious Diseases.
The incidence dropped by one-fifth for both mRNA vaccines when dose spacing was longer.
The Journal of Infectious Diseases has published studies demonstrating lower COVID-19 incidence—but a higher risk of severe disease—in people with Down syndrome (DS), and a lower COVID vaccine immune response.
An additional 600,000 lives might have been saved if global vaccination goals had been met.
A study yesterday in JAMA Internal Medicine shows that a fourth Pfizer COVID-19 vaccine dose provided 64% to 67% protection against hospitalization and 72% protection against death in nursing home residents, but only 34% protection against infection during an Omicron-dominated period.
The absolute risk appears to be only slightly higher than in uninfected peers.
Maternal COVID vaccination during pregnancy provides 52% protection against COVID-19 hospitalization in infants but only 38% protection against Omicron hospitalization, according to a study yesterday in the New England Journal of Medicine.
Protection against an intensive care unit (ICU) stay, however, was 70%.
