8.6 C
New York
Sunday, August 1, 2021
Home Technology Don't blame bats for COVID-19, says University of Saskatchewan researcher

Don’t blame bats for COVID-19, says University of Saskatchewan researcher


There are many theories about the source of the global COVIDs pandemic, including the idea the virus may have jumped from bats to humans at markets in China. 

Not so fast, said Vikram Misra, a bat expert and microbiologist at the University of Saskatchewan. 

“There’s no direct evidence,” Misra said. “The exact viruses, the very viruses that cause disease in people and other animals, those have not been found in bats.”

Bats get blamed for a lot of things — most recently, spreading the coronavirus to humans. But bats may also be the key to better understanding COVID-19 and finding a way to fight it. Vikram Misra, a microbiologist at the University of Saskatchewan, recently discovered why bats spread other coronaviruses so well, while the bats themselves seem immune. He spoke with Saskatoon Morning’s Jennifer Quesnel. 7:47

A delicate balance

There are, however, some important lessons to be learned about bats, according to Misra: how they deal with viruses, potentially spread them to humans and how to best prevent that from happening.

“[Bats] have lots of viruses but there are very very few viral diseases that actually make them sick,” said Misra. “They also seem to have for some of these viruses a very balanced relationship…they don’t get rid of the viruses, the viruses just sort of come along or multiply at a very very low rate.”

You know we shouldn’t blame bats for these diseases.– Vikram Misra 

The problem for bats is that when they are under stress, that delicate balance tips.

“While this wonderfully balanced relationship exists between bats and some of their viruses,” Misra said, “If you stress the bats then that relationship changes and then the viruses start to multiply at a much higher rate.”

According to Misra, the risk of passing disease from bats to the human population increases when the viruses begin multiplying. 

“You know we shouldn’t blame bats for these diseases, but if you want to sort of prevent spillovers of viruses from bats to other species and finally to humans we have to sort of treat them better.”

There are several factors that can lead to higher levels of stress in bats, including fungal disease, having to fly long distances for food and being confined in cages, a situation that may sometimes be seen in wet markets in China where bats are sold as food for human consumption.

How bats might help 

There is one other compelling lesson that may prove useful to researchers trying to find new ways to treat COVID-19, but Misra offered an important disclaimer first. 

“We don’t work with COVID-19, we work with other coronaviruses. Also all our work is in the laboratory, and so you’ve got to be a bit cautious about extending that to the real world.”

Misra suggested that when people get sick from COVID-19, the real problem that leads to severe symptoms and sometimes death is the way our bodies respond to the infection. For example, he said, inflammation can be a real problem. 

Bats are different, Misra said. When they become infected, their cells turn on antiviral responses and turn off inflammatory responses, the opposite of what seems to happen in humans. Misra said there are some clues about how bats do this. It’s possible, he said, that drugs could be developed to switch on a similar response in humans.



Source link

Today news
Today News 1 runs four of the western GTA’s most influential media websites, offering news, food, lifestyle and entertainment coverage for millions to the Golden Horseshoe and GTA regions. The independently-run, online news source was founded in 2019 and specializes in everything from breaking news to food and restaurant, arts and entertainment and lifestyle coverage.

LEAVE A REPLY

Please enter your comment!
Please enter your name here

- Advertisment -

Most Popular

Oilpatch revival underway with robust profits so far this year

After racking up debt in 2020, the Canadian oilpatch is enjoying a rebound so far this year as major oil producers are gushing...

Business travel isn’t expected to return to pre-pandemic levels anytime soon

Kacey Siskind recently took her first business trip to the U.S. since the pandemic began.  The vice-president of business development at Honk Mobile, a...

Pop star Kris Wu detained by Beijing police on suspicion of sexual assault

Chinese-Canadian pop star Kris Wu has been detained by Beijing police on suspicion of rape, police announced Saturday, following an accusation the former...

Barenaked Ladies ready to return to stage after a Detour de Force

Among the four current members of Barenaked Ladies, there are differing feelings about returning to the stage. There is the predictable excitement, but...

Recent Comments