Health
Study: New coronavirus transmitted from deer to humans multiple times
The coronavirus has passed from deer to humans at least a few times, according to a new study, based on an analysis of samples taken from animals.
of Analysis announced on Monday Researchers have found three possible cases of deer-derived virus variants infecting humans, according to the scientific journal Nature. These cases appear to have originally been caused by the virus spreading from humans to deer, then mutating and spreading to humans again.
The researchers, several of whom work for the Centers for Disease Control and Prevention and the Department of Agriculture, collected 8,830 respiratory samples from free-range white-tailed deer in 26 states and Washington, D.C., from November 2021 to April 2022. collected.
From the samples collected, the researchers identified 282 deer infected with COVID-19, the alpha, gamma, and delta variants that were more common early in the pandemic, and the more recent cases. We identified 34 different lineages of viruses, including viruses belonging to the ommicron variant that accounted for the majority of . .
Analysis showed that there were at least 109 individual transmission events in which humans spread the virus to deer. Since then, there have been at least 39 deer-to-deer transmissions and three deer-to-human transmissions.
At the time the researchers were collecting samples, the delta and ohmic variants were the most commonly reported among humans, but the alpha and gamma variants remain rare. I didn’t.
Researcher at Ohio State University warned in January 2022 About the possibility of the virus spreading from deer to humans. They found at least three different virus strains in more than 35% of the 360 wild white-tailed deer they surveyed in northeastern Ohio from January to March 2021.
Two of the possible cases of deer-to-human transmission occurred in North Carolina and one in Massachusetts.
Investigators were able to track down three infected people, but none reported being near deer in the month before contracting COVID-19. He also said that several lions had not been near the zoo where they were infected with the mutant strain.
The researchers believe that viruses circulating within white-tailed deer populations are derived from frequent spillover events from humans, and that further investigations into widespread deer populations are needed to elucidate the evolution and distribution of variants among deer. concluded that monitoring was necessary.
Additional studies will also help assess whether deer may be reservoirs of the virus and the role of deer in virus ecology.
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