December 22, 2024
BusinessElectionAlertsStateNation & World
News

Officials find 2 monkeypox strains in US

Genetic analysis of recent monkeypox cases suggests there are two distinct strains in the United States That raises the possibility that the virus has been circulating undetected for some time

By MIKE STOBBE
This 2003 electron microscope image made available by the Centers for Disease Control and Prevention shows mature, oval-shaped monkeypox virions, left, and spherical immature virions, right, obtained from a sample of human skin associated with the 2003 prairie dog outbreak. Monkeypox, a disease that rarely appears outside Africa, has been identified by European and American health authorities in recent days. (Cynthia S. Goldsmith, Russell Regner/CDC via AP)

This 2003 electron microscope image made available by the Centers for Disease Control and Prevention shows mature, oval-shaped monkeypox virions, left, and spherical immature virions, right, obtained from a sample of human skin associated with the 2003 prairie dog outbreak. Monkeypox, a disease that rarely appears outside Africa, has been identified by European and American health authorities in recent days. (Cynthia S. Goldsmith, Russell Regner/CDC via AP) (AP)

NEW YORK — (AP) — Genetic analysis of recent monkeypox cases suggests there are two distinct strains in the U.S., health officials said Friday, raising the possibility that the virus has been circulating undetected for some time.

Many of the U.S. cases were caused by the same strain as recent cases in Europe, but a few samples show a different strain, federal health officials said. Each strain had been seen in U.S. cases last year, before the recent international outbreak was identified.

Analysis from many more patients will be needed to determine how long monkeypox has been circulating in the U.S. and elsewhere, said Jennifer McQuiston of the Centers for Disease Control and Prevention.

“I think it's certainly possible that there could have been monkeypox cases in the United States that went under the radar previously, but not to any great degree,” she told reporters Friday.

Monkeypox typically begins with a flu-like illness and swelling of the lymph nodes, followed by a rash on the face and body. The disease is endemic in parts of Africa, where people have been infected through bites from rodents or small animals. It does not usually spread easily among people.

Last month, cases began emerging in Europe and the United States. Many — but not all — of those who contracted the virus had traveled internationally, and health officials in a growing number of countries are investigating.

As of Friday, the U.S. had identified at least 20 cases in 11 states. Hundreds of other cases have been found in other countries, many apparently tied to sexual activity at two recent raves in Europe.

___

The Associated Press Health & Science Department receives support from the Howard Hughes Medical Institute’s Department of Science Education. The AP is solely responsible for all content.

Copyright 2022 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed without permission.

Monkeypox