Biden Administration appeals ruling that struck down a federal mask mandate on planes and other public transportation: But experts noted the legal dangers of appealing the decision. Read more New report shows air pollution levels have spiked in recent years: After more than two decades of decreases in overall airContinue Reading

THURSDAY, April 21, 2022 (HealthDay News) — A fully vaccinated health care worker got COVID-19 twice in less than a month — the shortest known time between infections, Spanish researchers report. The 31-year-old was infected with the Omicron variant just 21 days after catching the Delta variant. “This case highlightsContinue Reading