Very few serious adverse events were reported, and instances of myocarditis were lower than initially reported.
The strains are most closely related to variants circulating in humans more than 2 years earlier, the possible result of undetected circulation in the animals.
Shielded people had a slightly higher known infection rate—5.9% versus 5.7%—compared with controls.
XBB.1.16 doesn't seem to come with additional health risks compared to XBB.1.5, but it may become dominant in some countries.
The proportion of residents who received benefits without a preceding 3-day hospitalization rose from 3% to 18% from 2020 to 2021.
ICU patients reported more mobility problems, and at 12 months 20% of ICU patients had severe problems or were unable to perform their usual activities.
The initiative in Texas was associated with reduced staff burnout during COVID-19 without increased healthcare-associated infections.
Despite rising proportions of two new subvariants, US COVID markers continue to fall.
The COVID-19 emergency committee will meet on May 4 to assess if the situation still warrants a public health emergency of international concern.
Study shows that that the median interval between two infections was 229 days, and reinfection counts were higher during the Omicron era.
A post hoc analysis of a randomized, controlled trial estimates that 2 doses are 100% effective against hospitalization by 95 days.
Nocebo is a phenomenon in which people experience negative effects when they have negative views or expectations.
Protection was 35% among those vaccinated before contracting COVID-19.
The bivalent booster marshaled a robust antibody response against the Omicron BA.4/BA.5 subvariants but not against the more recently emerged variants.
Patients hospitalized with severe COVID-19 breathing problems are less likely to need intubation if they lie face down, but the position's effect on death or other outcomes is inconclusive.
The BQ.1.1 and XBB SARS-CoV-2 subvariants evade monoclonal antibodies but not the antiviral drugs remdesivir, molnupiravir, and Paxlovid.
Those who reported COVID-19 during wave 1 had elevated symptoms of anxiety and depression at 1, 3, 5, and 13 months follow-up.
Slightly more than half of COVID-19–related scientific studies posted on medRxiv were published in peer-reviewed journals within 2 years.
A new analysis identifies substantial inter-country differences, with variations by age, sex, and season.
Teens were more likely to receive COVID-19 vaccine if they had received HPV, meningitis, or Tdap vaccine.
COVID-19 vaccines prevented more than 18.5 million US hospitalizations and 3.2 million deaths, according to new estimates.
Amid COVID-19 surges, people are scrambling to stockpile over-the-counter pain and fever medications.
The study shows 32% of corpses in a Zambian morgue were positive for COVID-19, but only 10% of the individuals tested positive while alive.
The monthly proportion of hospitalizations tied to psychological issues spiked after the emergence of COVID-19 in the US but not in France.
Parents were 8 times more likely to have their child immunized when they perceived that the information they received on the vaccine was credible.
