The number of hospitalized young children infected with the coronavirus rose precipitously last week to the highest levels since the beginning of the pandemic, according to data released on Friday by the Centers for Disease Control and Prevention. The increase was observed in children who were 4 and younger, who are not eligible for vaccination, […]

Five people in the United States died from rabies last year, the highest number in a decade, the Centers for Disease Control and Prevention said on Thursday. Three of those deaths, including that of a 7-year-old child, involved direct contact with bats and occurred over a five-week period starting in late September. The deaths occurred […]

“The mandate is aimed directly at protecting the unvaccinated from their own choices,” she wrote. “Vaccines are freely available, and unvaccinated people may choose to protect themselves at any time.” The Coronavirus Pandemic: Key Things to Know In the Supreme Court case, National Federation of Independent Business v. Department of Labor, No. 21A244, the challengers […]

Now, with the Omicron variant fueling an enormous new surge, they wrote, the United States must avoid becoming stuck in “a perpetual state of emergency.” The first step, they wrote, is recognizing that the coronavirus is one of several respiratory viruses circulating, and developing policies to address all of them together. To be better prepared […]

Reporting positive cases Most major cruise lines do not publicly announce the number of coronavirus cases on board their ships, but they are required to submit daily figures to the C.D.C. Currently, the agency is monitoring more than 90 cruise ships, because of reported cases that have reached the agency’s threshold for an investigation. (An […]

A small, new real-world study suggests that two widely used at-home antigen tests, the Abbott BinaxNOW and Quidel QuickVue, may fail to detect some Omicron infections even when people are carrying high levels of the coronavirus. The study, which has not yet been peer-reviewed, focused on 30 people infected with the virus at five workplaces […]

After two years of Covid-19 and its disruptions to our exercise routines, many of us may feel like we have forgotten how to be fit. But an encouraging new study suggests that our muscles remember. The study involved mice, but it builds on similar experiments with weight training and people. It found that muscles developed […]

In hospitals around the country, doctors are taking notice: This wave of Covid seems different from the last one. Once again, as they face the highly contagious Omicron variant, medical personnel are exhausted and are contracting the virus themselves. And the numbers of patients entering hospitals with the variant are surging to staggering levels, filling […]

Dr. Saam Morshed, a professor of orthopedic surgery at the University of California, San Francisco, who was not involved in the study, said, “I think it’s fair that we hold the mirror up to ourselves and scrutinize effectiveness for some of these operations. It’s important to understand where we have gaps in knowledge of the […]

Most U.S. doctors have no way to determine which variant of the coronavirus a patient is carrying, a distinction that could mean the difference between life and death. High-risk patients carrying the Delta variant could benefit greatly from two particular monoclonal antibody treatments shown to reduce hospitalization and death. But those medications would most likely […]