Tag Archives: Viruses

Dairy cows in Nevada have been infected with a new form of bird flu that is distinct from the version that has been spreading through herds over the last year, the U.S. Department of Agriculture announced on Wednesday. The finding indicates that the virus, known as H5N1, has spilled from birds into cows at least twice — leading to these …

This winter’s Covid wave in the United States has been the gentlest to date, in a welcome reprieve. According to wastewater data aggregated by the Centers for Disease Control and Prevention, not only was there less Covid circulating over the holidays than in previous years, but there was also less virus in the wastewater than in all the summer waves …

The Trump administration on Tuesday issued a waiver for lifesaving medicines and medical services, offering a reprieve for a worldwide H.I.V. treatment program that was halted last week. The waiver, announced by Secretary of State Marco Rubio, seemed to allow for the distribution of H.I.V. medications, but whether the waiver extended to preventive drugs or other services offered by the …

When bird flu first struck dairy cattle a year ago, it seemed possible that it might affect a few isolated herds and disappear as quickly as it had appeared. Instead, the virus has infected more than 900 herds and dozens of people, killing one, and the outbreak shows no signs of abating. A pandemic is not inevitable even now, more …

Most American parents hardly give thought to polio beyond the instant their child is immunized against the disease. But there was a time in this country when polio paralyzed 20,000 people in a year, killing many of them. Vaccines turned the tide against the virus. Over the past decade, there has been only one case in the United States, related …

Reports of a surge in cases of a respiratory virus in China have evoked dark echoes of the start of the Covid-19 pandemic almost exactly five years ago. But despite the surface similarities, this situation is very different, and far less worrisome, medical experts say. The Chinese cases are reported to be infections with human metapneumovirus, known to doctors as …

A Louisiana patient who had been hospitalized with severe bird flu has died, the first such fatality in the United States, state health officials reported on Monday. The patient was older than 65 and had underlying medical conditions, the officials said. The individual became infected with the bird flu virus, H5N1, after exposure to a backyard flock and wild birds. …