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Paxlovid's estimated effectiveness in preventing hospitalization or death was 53.6%, rising to 89.6% when it was taken on the day of the COVID-19 test.
The WHO's new variant tracking system better distinguishes Omicron sublineages and outlines when new SARS-CoV-2 changes pose major public health threats.
Fourth-dose vaccine effectiveness among patients aged 65 years or older was 66% at 7 to 59 days and 57% at a median of 88 days.
The Americas reported the vast majority of new cases over the past 3 weeks—408 of 442.
The test order rate per 1,000 patient-days fell from 126.5 in the pre-intervention period to 90.6 in the intervention period, a 28% reduction.
Researchers found H5N1 lineages unique to New England and novel amino acid changes, some linked to mammal adaptation.
Negative infant mood and behavior has been associated with behavioral, cognitive, and developmental problems across the lifespan.
Of the 85 videos analyzed, only 33% covered all content items that were highlighted in clinical practice guidelines.
"Currently available data show that vaccination remains the best defense against severe disease, hospitalization, and death caused by COVID-19 across all age groups."
A measles outbreak that began late last year in western Nepal has grown to 690 cases, the WHO says.
The survey found that infection control and antibiotic stewardship interventions requiring staff, time, and specialized training were used less frequently in 2021.
The skunks were found dead in residential areas of Vancouver and a city just south of there, prompting warnings about handling sick and dead animals.
Pandemic-related family financial struggles were tied to increases of 205% in perceived stress and 112% in sadness.
Estimated 1-dose protection against symptomatic mpox was 78% after at least 14 days, ranging from 71% to 85% in sensitivity analyses.
Less than 6 hours of sleep a night in the days before and after flu and hepatitis A and B vaccination was associated with a lower immune response.
All told, 53 cases in Turkey, 12 in Germany, and 1 each in Austria and Switzerland have been linked to botulism neurotoxin injections at 2 hospitals in Turkey.
Brazil's drug regulatory agency has approved Japan-based Takeda's 4-strain vaccine against dengue virus for use in people ages 4 to 60 years old.
Though current 2.3.4.4b clade H5N1 viruses still prefer avian receptors, scientists are closely watching mutations that may influence virulence and replication in mammals.
Venous thromboembolism occurred in 292 of 398,530 patients (0.1%) over the follow-up period, for an overall rate of 0.26 per 100 person-years.
Protection of 4 doses of COVID vaccine against BA.5 infection among COVID-naïve participants was 16.1%, while it was 89.5% and 94.3% among those previously infected with BA.1 and BA.2, respectively.
