If you’re one of the millions of Americans who have already had Covid-19, you may be wondering how long you will have immunity from the coronavirus. Earlier in the pandemic, most people assumed that getting infected had at least one upside: that you would be protected against future encounters with the virus. But as the […]

A veterinarian in Thailand likely contracted the coronavirus from an infected pet cat last year, researchers concluded in a new study. It is the first documented case of suspected cat-to-human transmission, although experts stress that the risk of cats infecting humans with the virus remains low overall. One of the cat’s two owners, who both […]

Officials at the Centers for Disease Control and Prevention on Friday pushed back against the idea that the monkeypox virus can spread through the air, saying the virus is usually transmitted through direct physical contact with sores or contaminated materials from a patient. The virus may also be transmitted by respiratory droplets expelled by an […]

With 44 million Medicare beneficiaries and an annual test costing about $1,000 a year plus expensive scans and biopsies for those whose tests are positive, the price tag could be substantial. He and other critics warn that the risks of unleashing the tests are substantial. Paradoxical as it may sound, finding cancers earlier could mean […]

About 1.6 million people in the United States are transgender, and 43 percent of them are young adults or teenagers, according to a new report providing the most recent national estimates of this population. The analysis, relying on government health surveys conducted from 2017 to 2020, estimated that 1.4 percent of 13- to 17-year-olds and […]

To hear more audio stories from publications like The New York Times, download Audm for iPhone or Android. SALT LAKE CITY — If the Great Salt Lake, which has already shrunk by two-thirds, continues to dry up, here’s what’s in store: The lake’s flies and brine shrimp would die off — scientists warn it could […]

“I think we are heading in a direction of increasing absolutism and punitiveness,” said Reva Siegel, a Yale Law School professor who is a co-author of an equal protection amicus brief in the Mississippi case before the Supreme Court. She noted that even as Mississippi legislators restricted abortion access, they refused to expand postpartum Medicaid […]

Moderna released preliminary results on Wednesday on an updated coronavirus vaccine that targets the Omicron variant, calling it “our lead candidate” to serve as a U.S. booster shot in the fall. The firm’s researchers tested a booster dose combining the original vaccine with one that specifically targeted Omicron, the variant that became dominant last winter. […]

The patients had metastatic breast cancer that had been progressing despite rounds of harsh chemotherapy. But a treatment with a drug that targeted cancer cells with laserlike precision was stunningly successful, slowing tumor growth and extending life to an extent rarely seen with advanced cancers. The new study, presented at the annual meeting of the […]

The Centers for Disease Control and Prevention updated its guidance last week for travelers wishing to protect themselves against monkeypox. This was one of its recommendations: “Wear a mask. Wearing a mask can help protect you from many diseases, including monkeypox.” Late Monday night, that recommendation was deleted. “C.D.C. removed the mask recommendation from the […]