Deer herds in U.S. are heavily infected with the new coronavirus (COVID-19)

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Deer herds in U.S. are heavily infected with the new coronavirus (COVID-19)

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Deer herds in U.S. are heavily infected with the new coronavirus (COVID-19). Nature’s attention: The new coronavirus has spread to wild animals, and the U.S. deer herds are heavily infected with the new coronavirus.

The white-tailed deer is named after its tail cocked when running and the bottom of its tail is white. The white-tailed deer is the most common deer in the United States. It can be seen in many forests, grasslands, and even golf courses in the United States. They are also one of the most widely distributed deer in the world, from the forests of eastern Canada, to the forests of the eastern United States, the Florida Peninsula, Mexico, Central American countries, and northern Peru.

On July 29, 2021, researchers from the US National Wildlife Research Center published a research paper titled: SARS-CoV-2 exposure in wild white-tailed deer (Odocoileus virginianus) in the preprint bioRxiv.

The study showed that more than one-third of white-tailed deer in the northeastern United States have antibodies against SARS-CoV-2, indicating that they have been infected with the new coronavirus. This is also the first time that wild animals have been widely exposed to the new coronavirus.

Researchers said that the large number of wild animals infected with the new coronavirus is worrying, but now we need to further study whether they will spread to each other and whether they will spread to other animals across species. It is also necessary to figure out how they are infected.

White-tailed deer are common in North America, especially near urban centers in the eastern United States. Previous studies have shown that deer can be infected with SARS-CoV-2 and spread to other deer. In the wild, these deer live in small populations, which means that the virus can spread naturally from infected animals.

Researchers are worried about the emergence of new animal populations carrying SARS-CoV-2. Once they appear, SARS-CoV-2 can evolve there, which may threaten the efficacy of the vaccine, and may re-spread after the COVID-19 pandemic subsides. To humans. Just like Ebola, it recurs.

To assess this risk, the research team tested blood samples of white-tailed deer collected in four U.S. states-Michigan, Pennsylvania, Illinois, and New York from January to March 2021. They were surprised to find that 40% of the samples contained SARS-CoV-2 antibodies, which were produced against SARS-CoV-2 infection. None of the white-tailed deer tested showed signs of birth disease.

The researchers also tested the white-tailed deer blood samples archived from 2011 to the present, and found that only 3 samples had SARS-CoV-2 antibodies in early 2020. At that time, SARS-CoV-2 had just begun to spread in the United States, indicating that the white-tailed deer Infection with the COVID-19 virus was after the COVID-19 pandemic.

In view of the percentage of SARS-CoV-2 antibodies that can be detected in the study, as well as the widespread distribution of white-tailed deer in the United States and close contact with humans, the United States Department of Agriculture stated that white-tailed deer in other states in the United States are likely to have also been infected with the new coronavirus. .

The researchers said that this study showed that white-tailed deer were infected with SARS-CoV-2 at a certain point in time, but the real mystery is how they were infected with the new coronavirus, whether they were in contact with humans or other animals. Contact, or infection through contaminated water.

The researchers also reminded that it is necessary to investigate and test the white-tailed deer, their predators, and other animals that have close contact with the white-tailed deer.

Reference materials:
https://www.biorxiv.org/content/10.1101/2021.07.29.454326v1
https://www.nature.com/articles/d41586-021-02110-8

(source:internet, reference only)

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