Friday, October 23, 2020
Home Life Style Health & Fitness People May Get Protection from COVID if They Had Common Cold in...

People May Get Protection from COVID if They Had Common Cold in Past: Researchers

Seasonal Cold in Past May Help In antibodies' generation

In a big breakthrough, researchers have found that people who have had about the seasonal or common cold in the past may get protection from Covid-19.

The study, published in the journal mBio, also suggests that immunity to Covid-19 is likely to last a long time — maybe even a lifetime.

The study showed that the COVID-19-causing virus, SARS-CoV-2, induces memory B cells, long-lived immune cells that detect pathogens, create antibodies to destroy them, and remember them for the future.

The next time that pathogen tries to enter the body, those memory B cells can hop into action even faster to clear the infection before it starts.

Because memory B cells can survive for decades, they could protect Covid-19 survivors from subsequent infections for a long time, but further research will have to bear that out, the researchers said.

The study is also the first to report cross-reactivity of memory B cells — meaning B cells that once attacked cold-causing coronaviruses appeared to also recognize SARS-CoV-2.

Study authors believe this could mean that anyone who has been infected by a common coronavirus — which is nearly everyone — may have some degree of pre-existing immunity to Covid-19.

“When we looked at blood samples from people who were recovering from Covid-19, it looked like many of them had a pre-existing pool of memory B cells that could recognize SARS-CoV-2 and rapidly produce antibodies that could attack it,” said lead study author Mark Sangster from the University of Rochester in the US.

Common Cold
Common Cold may give some degree of pre-existing immunity to Covid-19. Pixabay

The findings are based on a comparison of blood samples from 26 people who were recovering from mild to moderate Covid-19 and 21 healthy donors whose samples were collected six to 10 years ago — long before they could have been exposed to Covid-19.

From those samples, study authors measured levels of memory B cells and antibodies that target specific parts of the Spike protein, which exists in all coronaviruses and is crucial for helping the viruses infect cells.

The Spike protein looks and acts a little different in each coronavirus, but one of its components, the S2 subunit, stays pretty much the same across all of the viruses.

Memory B cells can’t tell the difference between the Spike S2 subunits of the different coronaviruses and attack indiscriminately.

Also Read: Airborne Transmission of Covid-19 Spreads More Quickly Indoors: Study

The study found that was true for beta coronaviruses, a subclass that includes two cold-causing viruses as well as SARS, MERS, and SARS-CoV-2.

“Now we need to see if having this pool of pre-existing memory B cells correlates with milder symptoms and shorter disease course — or if it helps boost the effectiveness of Covid-19 vaccines,” the authors wrote. (IANS)

STAY CONNECTED

19,120FansLike
362FollowersFollow
1,778FollowersFollow

Most Popular

Down Syndrome May Increase COVID Death Risk

Researchers have found that down syndrome is associated with a 10-fold increased risk for COVID-19-related death. Down syndrome (sometimes called Down's syndrome) is a condition...

Miss India 2020 Pageant Held Virtually Due to Pandemic

In the wake of the COVID-19 pandemic, Miss India 2020 pageant will be held virtually the Miss India Organisation has announced. A nationwide audition to...

6 Designers Came Together to Help Craft Clusters Impacted by Pandemic

Six fashion designers came together to support marginalized craft clusters and those heavily impacted by the pandemic by generating livelihood opportunities for the artisans....

India Rapidly Expanding High Power Supercomputers

India is fast expanding its supercomputer facilities and developing the capacity to manufacture its own supercomputers in the country, the Ministry of Science and...

Cholesterol Medications May Lower Cancer-Related Deaths in Women

Among women with breast cancer, colorectal cancer, or melanoma, those who are taking cholesterol-lowering medications are less likely to die from cancer, researchers said. The...

Immediate Biomedical Waste Management Halts COVID Spread: UNIDO

The United Nations Industrial Development Organisation (UNIDO) on Tuesday stressed the need to halt the spread of COVID-19 through all possible infection channels, including...

1.16L Infant Deaths in 2019 Due to Air Pollution in India

The first-ever comprehensive analysis of air pollution's global impact on newborns finds that outdoor and household particulate matter pollution contributed to the deaths of...

Literature and Movies: Filmmaker Suman Mukhopadhyay

While reading 'Chuti Nakoch', a story by writer Ashapurna Devi, he suddenly felt grabbed by the jugular. It was tough to ignore the visual...

Recent Comments