Wednesday, May 12, 2021
Home Life Style Health & Fitness COVID Recovered Patients May Have Immunity Until 8 Months

COVID Recovered Patients May Have Immunity Until 8 Months

The findings published in the prestigious journal Science

Contrary to the current belief that recovered Covid-19 patients have antibodies to fight the disease for up to three to five months, a significant study has claimed that the protective immunity against the SARS-CoV-2 virus could last for at least eight months or more.

The fact that immune memory against SARS-CoV-2 is possible for more time is also a good sign for vaccine developers.

The findings published in the prestigious journal Science helps clarify some Covid-19 concerning data from other labs, which showed a dramatic drop-off of Covid-fighting antibodies in months following the infection.

Some feared that this decline in antibodies meant that the body wouldn’t be equipped to defend itself against re-infection.

Follow NewsGram on Instagram to keep yourself updated.

“Our data suggest that the immune response is there — and it stays,” said researcher Alessandro Sette, a professor at La Jolla Institute for Immunology in the US.

According to the researchers, nearly all Covid-19 survivors have the immune cells necessary to fight re-infection.

For the study, the research team analyzed blood samples from 188 Covid-19 recovered patients.

“We measured antibodies, memory B cells, helper T cells, and killer T cells, all at the same time,” said Shane Crotty, a professor at the Institute.

Follow NewsGram on Facebook to stay updated.

“As far as we know this is the largest study ever for any acute infection that has measured all four of those components of immune memory,” Crotty added.

The findings suggested that responses to the novel coronavirus, SARS-CoV-2, from all major players in the “adaptive” immune system, which learns to fight specific pathogens, could last for at least eight months after the onset of symptoms from the initial infection.

Study co-author Daniela Weiskopf emphasized that the study tracked responses to natural SARS-CoV-2 infection, not immune memory after vaccination.

COVID Immunity
Eventually, the immune response contracts somewhat and gets to a steady-state. Unsplash

“It is possible that immune memory would be similarly long-lasting following vaccination, but we will have to wait until the data comes in to be able to tell for sure,” Weiskopf said.

“The vaccine studies are at the initial stages and so far have been associated with strong protection. We are hopeful that a similar pattern of responses lasting over time will also emerge for the vaccine-induced responses”.

Want to read more in Hindi? Checkout: आगरा में बुजुर्गो के लिए फ्री टिफिन सेवा शुरू 

The researchers said they would continue to analyze samples from Covid-19 patients in the coming months and hope to track their responses 12 to 18 months after the onset of symptoms.

“We are also doing very detailed analyses at a much, much higher granularity on what pieces of the virus are recognized,” said Sette.

The researchers found that virus-specific antibodies do persist in the bloodstream months after infection. Importantly, the body also has immune cells called memory B cells at the ready.

If a person encounters SARS-CoV-2 again, these memory B cells could reactivate and produce SARS-CoV-2 antibodies to fight re-infection.

The SARS-CoV-2 virus uses its “spike” protein to initiate infection of human cells, so the researchers looked for memory B cells specific for the SARS-CoV-2 spike. They found that spike-specific memory B cells actually increased in the blood six months after infection.

ALSO READ: Single-Dose Of Covid19 Vaccine Triggers Antibody Response

Sette explains that a decline in antibodies is very normal.

“Of course, the immune response decreases over time to a certain extent, but that’s normal. That’s what immune responses do. They have a first phase of ramping up and after that fantastic expansion, eventually the immune response contracts somewhat and gets to a steady-state,” the researcher opined. (IANS)



Most Popular

Swami Ghanananda: An Ethnic African Who Built Africa’s First Hindu Monastery

By- Khushi Bisht Hinduism, also known as Santana Dharma (Eternal Religion), is believed to be the world's oldest religion. After Islam and Christianity, it has...

Over 90% Of Indians Feel Included In Video Calls; Say It Improves Mental Health

Around 90 percent of respondents feel that video calls have helped them to combat feelings of loneliness amid the pandemic, a report said on...

The History Of Tattoos

BY- JAYA CHOUDHARY In 1991, two German hikers came across a man whose body had been preserved in a glacier for 5000 years. Otzi the...

How Does The Body React When You Are Diagnosed with Covid-19?

By Himani Rathore The recent coronavirus pandemic has taken a severe toll on the mental and physical health of individuals the world over. With its...

The Jobs Market Is Constantly Evolving – Are You Keeping Up?

By Melinda Smith Leech collectors, alchemists, ten-pin bowling pinsetters, toad doctors, clock keepers, street lantern lighters, and town criers. These are all professions that were...

‘Free Jabs, Rapid Testing Must To Fight Covid In Rural India’, Says Health Expert Poonam Muttreja

Free or subsidized testing, treatment, and vaccination along with the provision of uninterrupted essential health services are essential to fight Covid-19 in rural India,...

What You Need To Know Before You Start Gambling Online

By Rajesh Chakrabortty Online gambling has been on the rise lately, and rightfully so. People are seeking ways to make some more money, and online...

Online Education Platform By Professional Turns Boon For Students

Necessity is the mother of invention is the common saying, but for Satish, Sherry, Feroze, and Shyam, presently in Thrissur, Muscat, Boston, and New...

Recent Comments