• Contact us
  • Advertising Policy
  • Cookie Policy
  • Disclaimer
  • Privacy Policy
  • Terms of Use
Saturday, July 19, 2025
25 °c
Agartala
enewstime
  • Home
  • News
    • Northeast
    • National
    • International
    • Tripura News
  • Sports
    Bumrah should feature in both the remaining Tests: Kumble

    Bumrah should feature in both the remaining Tests: Kumble

    Gill being fired up at Lord’s didn’t have the right effect on his batting returns, says Manjrekar

    Gill being fired up at Lord’s didn’t have the right effect on his batting returns, says Manjrekar

    Jadeja hailed as Team India's MVP after incredible fight at Lord’s

    Jadeja hailed as Team India's MVP after incredible fight at Lord’s

    'Win the toss and bat, put runs on the board': Kaif advises Gill to follow Kohli’s approach  

    'Win the toss and bat, put runs on the board': Kaif advises Gill to follow Kohli’s approach  

    Arsenal sign Olivia Smith for world-record women's transfer fee

    Arsenal sign Olivia Smith for world-record women's transfer fee

    When we played on gravel pitches in Brazil, I'd imagine playing for United: Matheus Cunha

    When we played on gravel pitches in Brazil, I'd imagine playing for United: Matheus Cunha

    I knew with calm and composed approch we can pull off the chase: Deepti Sharma

    I knew with calm and composed approch we can pull off the chase: Deepti Sharma

    'Aussie Ashes line-up is going to be like it is right now', opines Ponting

    'Aussie Ashes line-up is going to be like it is right now', opines Ponting

    Jitesh Sharma to represent Baroda in 2025/26 domestic season after leaving Vidarbha

    Jitesh Sharma to represent Baroda in 2025/26 domestic season after leaving Vidarbha

  • Business
  • Entertainment
  • Health
  • Features
  • TendersNew
No Result
View All Result
  • Home
  • News
    • Northeast
    • National
    • International
    • Tripura News
  • Sports
    Bumrah should feature in both the remaining Tests: Kumble

    Bumrah should feature in both the remaining Tests: Kumble

    Gill being fired up at Lord’s didn’t have the right effect on his batting returns, says Manjrekar

    Gill being fired up at Lord’s didn’t have the right effect on his batting returns, says Manjrekar

    Jadeja hailed as Team India's MVP after incredible fight at Lord’s

    Jadeja hailed as Team India's MVP after incredible fight at Lord’s

    'Win the toss and bat, put runs on the board': Kaif advises Gill to follow Kohli’s approach  

    'Win the toss and bat, put runs on the board': Kaif advises Gill to follow Kohli’s approach  

    Arsenal sign Olivia Smith for world-record women's transfer fee

    Arsenal sign Olivia Smith for world-record women's transfer fee

    When we played on gravel pitches in Brazil, I'd imagine playing for United: Matheus Cunha

    When we played on gravel pitches in Brazil, I'd imagine playing for United: Matheus Cunha

    I knew with calm and composed approch we can pull off the chase: Deepti Sharma

    I knew with calm and composed approch we can pull off the chase: Deepti Sharma

    'Aussie Ashes line-up is going to be like it is right now', opines Ponting

    'Aussie Ashes line-up is going to be like it is right now', opines Ponting

    Jitesh Sharma to represent Baroda in 2025/26 domestic season after leaving Vidarbha

    Jitesh Sharma to represent Baroda in 2025/26 domestic season after leaving Vidarbha

  • Business
  • Entertainment
  • Health
  • Features
  • TendersNew
No Result
View All Result
enewstime
  • Home
  • News
  • Sports
  • Business
  • Entertainment
  • Health
  • Features
  • Tenders
Home Health

Covid recovery does not guarantee antibodies, immunity to re-infection

ENEWSTIME Desk by ENEWSTIME Desk
August 30, 2021
in Health
30
VIEWS
Share on FacebookShare on Twitter

 Prior exposure to SARS-CoV-2, the virus causing Covid-19, neither guarantees a high level of antibodies nor immunity to re-infection as thought earlier, finds a study emphasising the need to get vaccinated against the deadly infectious disease.

The study, led by researchers from the Northwestern University in the US, shows that two months after the second Pfizer/Moderna vaccination, antibody response decreases 20 per cent in adults with prior cases of Covid-19.

It added that prior exposure to SARS-CoV-2 does not guarantee a robust antibody response to the first vaccine dose. This directly contradicts the assumption that contracting Covid will naturally make someone immune to re-infection.

The findings, published in the journal Scientific Reports, further supports vaccination (and two doses), even for people who have contracted the virus previously.

“Many people, and many doctors, are assuming that any prior exposure to SARS-CoV-2 will confer immunity to re-infection. Based on this logic, some people with prior exposure don’t think they need to get vaccinated. Or if they do get vaccinated, they think that they only need the first dose of the two-dose Pfizer/Moderna vaccines,” said Thomas McDade, Professor of Anthropology in the Weinberg College of Arts and Sciences and a faculty fellow with the University’s Institute for Policy Research.

“Our study shows that prior exposure to SARS-CoV-2 does not guarantee a high level of antibodies, nor does it guarantee a robust antibody response to the first vaccine dose. For people who had mild or asymptomatic infections, their antibody response to vaccination is essentially the same as it is for people who have not been previously exposed,” he added.

For the study, the team tested blood samples from adults who had contracted Covid to measure how long the immunity benefits of Pfizer and Moderna vaccines last and how well they protect from newer variants.

When the team tested blood samples from participants collected about three weeks after their second vaccine dose, the average level of inhibition was 98 per cent, indicating a very high level of neutralising antibodies.

The scientists tested emerging variants B.1.1351 (Beta), B.1.1.7 (Alpha) and P.1 (Gamma) and found the level of inhibition to viral variants was significantly lower, ranging from 67 per cent to 92 per cent.

They also found that antibody response declined after two months by about 20 per cent, and that the antibody response to vaccination varied based on history of prior infection.

Further, individuals with clinically confirmed cases of Covid-19 and multiple symptoms also showed a higher level of response than those who tested positive but had mild symptoms or were asymptomatic.

Related Posts

Twin studies report global rise in gastrointestinal cancers among middle-aged adults
Health

Twin studies report global rise in gastrointestinal cancers among middle-aged adults

July 18, 2025
Vietnam issues directive to curb African swine fever outbreaks
Health

Vietnam issues directive to curb African swine fever outbreaks

July 18, 2025
Explained: What is 'chronic venous insufficiency' that Donald Trump is suffering from
Health

Explained: What is 'chronic venous insufficiency' that Donald Trump is suffering from

July 18, 2025
South Africa rolls out mpox vaccination programme to curb spread
Health

South Africa rolls out mpox vaccination programme to curb spread

July 18, 2025
Climate, wildlife key predictors of bird flu outbreaks in Europe: Study
Health

Climate, wildlife key predictors of bird flu outbreaks in Europe: Study

July 18, 2025
Gene essential for vitamin D absorption may boost cancer treatment
Health

Gene essential for vitamin D absorption may boost cancer treatment

July 18, 2025
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT
D-2050 D-2050 D-2050
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT

About us

Enewstime.in is run by an individual – a Journalist by profession of Tripura with the active help of several journos including senior journalists of the State. On top of that, Enewstime.in being a subscriber of IANS news agency, we have plenty of multi-choice topics to offer to our esteemed readers. Enewstime.in is a venture reach global audience from a tiny State Tripura.

Latest News

Twin studies report global rise in gastrointestinal cancers among middle-aged adults

Vietnam issues directive to curb African swine fever outbreaks

Kaveri Kapur opens up about her battle with PCOS & Uranium Poisoning; Admits 'Feeling better now'

Indian stock market ends lower amid selling in banking, IT sectors

Bumrah should feature in both the remaining Tests: Kumble

Explained: What is 'chronic venous insufficiency' that Donald Trump is suffering from

Contact us

19, Old Thana Road. Banamalipur. PO. Agartala. Pin code 799001. Tripura (West), India.

Email: enewstime2017@gmail.com

Wa: 8794548041

  • Contact us
  • Advertising Policy
  • Cookie Policy
  • Disclaimer
  • Privacy Policy
  • Terms of Use

© 2025 Designed & Developed with ❤️ by Provibe Media LLP

Welcome Back!

Login to your account below

Forgotten Password?

Retrieve your password

Please enter your username or email address to reset your password.

Log In
No Result
View All Result
  • Home
  • News
    • Northeast
    • National
    • International
    • Tripura News
  • Sports
  • Business
  • Entertainment
  • Health
  • Features
  • Tenders

© 2025 Designed & Developed with ❤️ by Provibe Media LLP