...Medical researchers have also linked SARS-CoV-2 to lingering complications in multiple organs and systems, and some recent work has found that new-onset cholesterol problems may be an under-recognized but common complication of COVID-19.
Estimated bivalent (two-strain) COVID-19 mRNA vaccine effectiveness (VE) against hospitalization dropped from 62% 1 week after receipt to 24% at 4 to 6 months in adults with healthy immune systems, but protection against severe outcomes was sustained, according to a US Centers for Disease Control and Prevention (CDC) study.
Monitoring of Pfizer/BioNTech COVID-19 vaccine safety among more than 3 million US children aged 5 to 17 years flagged just 2 of 20 health outcomes among 12- to 17-year-olds—myocarditis and pericarditis, which were rare.
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