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herd immunity

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One-third of India's population is still vulnerable to Covid-19 infection. The proportion can be higher in some states.

How close is India to achieve herd immunity? What experts say

By hindustantimes.com | Written by Poulomi Ghosh
PUBLISHED ON JUL 25, 2021 09:09 PM IST
'Herd immunity' will not be same across the country, experts have said as some states are still seeing a significant number of infections indicating that the immunity of their population is lower than many other states.
Member of NITI Aayog (Health) Dr. VK Paul addresses a press conference in New Delhi on Saturday. (ANI)
Member of NITI Aayog (Health) Dr. VK Paul addresses a press conference in New Delhi on Saturday. (ANI)

Centre warns of third wave, says no herd immunity in population yet

By hindustantimes.com | Written by Joydeep Bose | Edited by Meenakshi Ray, New Delhi
PUBLISHED ON JUL 17, 2021 05:52 AM IST
India will have to watch out for the signs of a third wave of the pandemic over the next 100-125 days, and people will have to adhere to all Covid-19 appropriate behaviour. "If we all decide, then there will not be any third wave," said Dr VK Paul, NITI Aayog member (health)
In picture - The first batch of Covid-19 vaccine boxes unloaded from a Pakistan's air force plane after arriving from China at the Nur Khan military airbase in Islamabad.(AFP)
In picture - The first batch of Covid-19 vaccine boxes unloaded from a Pakistan's air force plane after arriving from China at the Nur Khan military airbase in Islamabad.(AFP)

Pak govt not planning to buy Covid-19 vaccines; to rely on herd immunity

PTI | , Islamabad
PUBLISHED ON MAR 05, 2021 02:56 PM IST
NHS Secretary Amir Ashraf Khawaja said that the government has no plan to buy vaccines anytime soon and aims to tackle the Covid-19 health challenge through herd immunity and donated vaccines.
Without herd immunity as a shared goal, some might skip the vaccine, influenced by scare stories about side effects and rare allergic reactions, especially if they are young and face only a small chance of dying from the virus.(Pixabay)
Without herd immunity as a shared goal, some might skip the vaccine, influenced by scare stories about side effects and rare allergic reactions, especially if they are young and face only a small chance of dying from the virus.(Pixabay)

Herd immunity could be closer than we think

Bloomberg |
PUBLISHED ON JAN 21, 2021 11:55 AM IST
The evidence is compelling that a strong, rapid vaccination campaign could render SARS-CoV-2 less of a threat than seasonal flu through building herd immunity.
The webinar ‘HEAL-Thy Samvaad’ was organised by the Heal Foundation to discuss the dynamics of the new strain of Covid-19 detected first in the UK.(Pixabay)
The webinar ‘HEAL-Thy Samvaad’ was organised by the Heal Foundation to discuss the dynamics of the new strain of Covid-19 detected first in the UK.(Pixabay)

India moving towards herd immunity as Covid-19 cases declining, no need to panic over UK virus strain: Health experts

New Delhi [India] | By Asian News International | Posted by Jahnavi Gupta
UPDATED ON JAN 01, 2021 05:44 PM IST
India is perhaps moving towards herd immunity as Covid-19 cases are declining and there is no need to panic over the new virus strain found in the United Kingdom because reports suggest that it not as virulent.
Spanish Prime Minister Pedro Sanchez speaks during a news conference, amid the coronavirus disease (Covid-19) pandemic, at Moncloa Palace, in Madrid, Spain.(REUTERS)
Spanish Prime Minister Pedro Sanchez speaks during a news conference, amid the coronavirus disease (Covid-19) pandemic, at Moncloa Palace, in Madrid, Spain.(REUTERS)

Coronavirus herd immunity not yet in sight, Spanish PM says

Spain | By Reuters | Posted by Arpan Rai
PUBLISHED ON DEC 29, 2020 06:56 PM IST
Soon there will be more people vaccinated against the virus in Spain than people infected with the virus, Sanchez said during a televised end-of-year address.
A health worker takes a swab sample of a resident in Thane on Saturday.(Praful Gangurde)
A health worker takes a swab sample of a resident in Thane on Saturday.(Praful Gangurde)

Maharashtra reports fewer than 5,000 fresh infections for eighth straight day

By Faisal Malik, Mumbai
UPDATED ON DEC 13, 2020 04:42 AM IST
Maharashtra recorded 4,259 Covid-19 cases on Saturday, the eighth day of fewer than 5,000 fresh infections, pushing the state’s tally to 1,876,699.
A health worker, wearing a protective suit and a face mask, prepares to administer a nasal swab to a patient in a temporary testing site for the coronavirus disease (Covid-19) at the Zenith Arena in Lille, France, October 15, 2020.(Reuters photo for representation)
A health worker, wearing a protective suit and a face mask, prepares to administer a nasal swab to a patient in a temporary testing site for the coronavirus disease (Covid-19) at the Zenith Arena in Lille, France, October 15, 2020.(Reuters photo for representation)

Herd immunity approaches to control Covid-19 ‘a dangerous fallacy’, say scientists

London | By Press Trust of India | Posted by Niyati Singh
UPDATED ON OCT 15, 2020 10:56 PM IST
Managing Covid-19 by allowing herd immunity to develop in low-risk populations while protecting the most vulnerable is “a dangerous fallacy unsupported by the scientific evidence,” warn an international group of 80 researchers in an open letter.
Commuters cross London Bridge in London, UK, on October 15.(Bloomberg)
Commuters cross London Bridge in London, UK, on October 15.(Bloomberg)

Herd immunity approach to Covid-19 is dangerous: Experts

Hindustan Times, London | By Prasun Sonwalkar
UPDATED ON OCT 15, 2020 06:34 PM IST
The warning is included in an open letter published by The Lancet and signed by 80 international researchers.
Experts said the prospect of reinfection could have a profound impact on how the world battles through the pandemic.(REUTERS)
Experts said the prospect of reinfection could have a profound impact on how the world battles through the pandemic.(REUTERS)

Covid-19 reinfection casts doubt on virus immunity: Study

Paris | By Agence France-Presse| Posted by Susmita Pakrasi
UPDATED ON OCT 13, 2020 03:30 PM IST
A study published in The Lancet Infectious Diseases journal charts the first confirmed case of Covid-19 reinfection in the United States -- the country worst hit by the pandemic -- and indicates that exposure to the virus may not guarantee future immunity.
A confectioner arranges a cake shaped like a microscopic view of the coronavirus SARS-CoV-2 at a bakery, amid concerns about the spread of the disease in Prague, Czech Republic.(REUTERS)
A confectioner arranges a cake shaped like a microscopic view of the coronavirus SARS-CoV-2 at a bakery, amid concerns about the spread of the disease in Prague, Czech Republic.(REUTERS)

UN warns against pursuing herd immunity to stop coronavirus, says ‘allowing dangerous virus to run free simply unethical’

London | By Associated Press | Posted by Arpan Rai
UPDATED ON OCT 13, 2020 12:35 AM IST
At a media briefing on Monday, WHO Director-General Tedros Adhanom Ghebreyesus said health officials typically aim to achieve herd immunity by vaccination.
Six months ago, populations across the world acquiesced, with minimal debate, to lockdowns to fight the Covid-19 pandemic.(Pixabay)
Six months ago, populations across the world acquiesced, with minimal debate, to lockdowns to fight the Covid-19 pandemic.(Pixabay)

Can you handle herd immunity? Ask these philosophers

By Bloomberg | Posted by Jahnavi Gupta
UPDATED ON OCT 12, 2020 08:04 PM IST
The idea of “herd immunity” through infection, ruled out almost everywhere six months ago, is now under serious consideration in capitals across the world.
A health worker in PPE coveralls collects a swab samples for coronavirus testing, at Hudson Lane, in New Delhi on Sunday.(Sanchit Khanna/HT PHOTO)
A health worker in PPE coveralls collects a swab samples for coronavirus testing, at Hudson Lane, in New Delhi on Sunday.(Sanchit Khanna/HT PHOTO)

India far from any kind of herd immunity against Sars-CoV-2: Govt

Hindustan Times, New Delhi | By Rhythma Kaul
UPDATED ON SEP 28, 2020 05:45 AM IST
Harsh Vardhan said the results of the second Covid-19 sero survey will soon be made public, but cautioned that people should guard against a sense of complacence.
A study -- published on the pre-print server MedRxiv before peer review – said the results of antibody analysis of banked blood and mathematical modeling led them to estimate that between 44% and 66% of the population of the city was infected.(AP)
A study -- published on the pre-print server MedRxiv before peer review – said the results of antibody analysis of banked blood and mathematical modeling led them to estimate that between 44% and 66% of the population of the city was infected.(AP)

Does Brazil Covid study offer some clues on herd immunity?

Hindustan Times, New Delhi | By HT Correspondent
UPDATED ON SEP 24, 2020 11:45 PM IST
The pandemic ripped through Manaus, a city of 2.1 million that lies at the centre of the Amazon rainforest region, in March and April with tens of thousands of infections, but the spread slowed down.
It is now widely accepted that around 40% of the people infected by the Sars-CoV-2 virus which causes Covid-19 do not show any symptoms. And that many of the others show mild symptoms.(Reuters)
It is now widely accepted that around 40% of the people infected by the Sars-CoV-2 virus which causes Covid-19 do not show any symptoms. And that many of the others show mild symptoms.(Reuters)

Covid-19: What you need to know today

Hindustan Times, New Delhi | By R Sukumar
UPDATED ON SEP 15, 2020 01:27 AM IST
The study, whose headline results were reported in June (by the HT newsroom and a few others) showed a prevalence of 0.73% among adults, translating into around 6.5 million infections. This number isn’t cause for alarm as some suggest.
A woman wearing a face mask walks past a mural, following the coronavirus disease outbreak, in Hong Kong, China.(REUTERS)
A woman wearing a face mask walks past a mural, following the coronavirus disease outbreak, in Hong Kong, China.(REUTERS)

What the Hong Kong reinfection case means

Hindustan Times, New Delhi | By HT Correspondent
UPDATED ON AUG 26, 2020 05:01 PM IST
In late March, a 33-year-old Hong Kong resident contracted Covid-19 and was symptomatic. The man was hospitalised and deemed recovered on April 14. Genomic analysis showed the infection was with a strain prevalent in Asia at the time
Medical residents and doctors attend a 24-hour strike amid the coronavirus disease pandemic in Seoul, South Korea.(REUTERS)
Medical residents and doctors attend a 24-hour strike amid the coronavirus disease pandemic in Seoul, South Korea.(REUTERS)

Reaching herd immunity in a viral pandemic

Sydney | By Reuters | Posted by Shankhyaneel Sarkar
UPDATED ON AUG 23, 2020 11:33 AM IST
Herd immunity refers to a large portion of a community developing a degree of immunity to a virus, thereby reducing person-to-person spread.
As on August 7 (the last day of the sampling), Delhi had 4,082 deaths due to Covid-19.(Pratham Gokhale/HT Photo)
As on August 7 (the last day of the sampling), Delhi had 4,082 deaths due to Covid-19.(Pratham Gokhale/HT Photo)

What Delhi sero survey means | HT Editorial

Hindustan Times | By HT Correspondent
UPDATED ON AUG 20, 2020 08:24 PM IST
Herd immunity is getting closer, but don’t lower the guard
BMC health workers conduct thermal screening and pulse test of a resident at Dharavi, Mumbai, August 11, 2020.(Vijayanand Gupta/HT Photo)
BMC health workers conduct thermal screening and pulse test of a resident at Dharavi, Mumbai, August 11, 2020.(Vijayanand Gupta/HT Photo)

Covid-19: Crucial test in Mumbai slums brings focus on debate around herd immunity

Hindustan Times, New Delhi | By hindustantimes.com | Edited by Anubha Rohatgi
UPDATED ON AUG 13, 2020 02:51 PM IST
In the first sero survey, the BMC found 57% infection prevalence in slums. In the second survey, authorities will check if the presence of antibodies has declined or increased in the same set of people that were part of the first survey.
Despite efforts to contain coronavirus spread, Mumbai’s poorest places may have unwittingly pursued the controversial strategy of herd immunity. (Representational Image)(Unsplash)
Despite efforts to contain coronavirus spread, Mumbai’s poorest places may have unwittingly pursued the controversial strategy of herd immunity. (Representational Image)(Unsplash)

Covid-19 update: Herd immunity may be developing in Mumbai’s poorest areas

By Bloomberg | Posted by Saumya Sharma
UPDATED ON JUL 30, 2020 06:55 PM IST
Epidemiologists generally believe that infection levels must reach 60% to create herd immunity. But exposure concentrated in the populations least able to socially distance could still slow the overall spread of infection.
The universal use of masks in public places is the single most important intervention to reduce risks(Yogendra Kumar/HT)
The universal use of masks in public places is the single most important intervention to reduce risks(Yogendra Kumar/HT)

As Covid-19 spreads, the silver lining | Opinion

By Anurag Agrawal
UPDATED ON JUL 27, 2020 06:46 PM IST
It is a problem. But there is now enough know-how to help prevent it, and manage its consequences
On July 1, 5,892 beds in Covid-19 hospitals were occupied. On Friday, that figure stood at 3,210.(Biplov Bhuyan/HT PHOTO)
On July 1, 5,892 beds in Covid-19 hospitals were occupied. On Friday, that figure stood at 3,210.(Biplov Bhuyan/HT PHOTO)

Covid-19: Finally, some good news from Delhi, writes Karan Thapar

UPDATED ON JUL 25, 2020 07:22 PM IST
We still need to be cautious, but the reassuring part is that, as data shows, Delhi may have flattened the curve
Contract workers in PPE equipment seen sanitizing the ambulance after transporting the body of a coronavirus victim, at Yerwada crematorium, in Pune.(Pratham Gokhale/HT Photo)
Contract workers in PPE equipment seen sanitizing the ambulance after transporting the body of a coronavirus victim, at Yerwada crematorium, in Pune.(Pratham Gokhale/HT Photo)

Positivity rate increases during lockdown in Pune city

Hindustan Times, Pune | By Dheeraj Bengrut
UPDATED ON JUL 24, 2020 04:34 PM IST
PMC has not been able to complete this task as the average contact tracing has been 10.79 per cent.
Asked about herd immunity, Satyendar Jain said even experts differ on this concept(ANI)
Asked about herd immunity, Satyendar Jain said even experts differ on this concept(ANI)

Monthly sero-surveys, next to be conducted from August 1-5, says Delhi health minister

Hindustan Times, New Delhi | By Abhishek Dey
UPDATED ON JUL 22, 2020 03:00 PM IST
The previous sero-survey was conducted in Delhi during June 27-July 10, usung more than 21,000 samples. The results of the survey, shared by the National Centre for Disease Control (NCDC), suggested around 23% of the city’s population or about one in four persons may have been exposed to the Sars-CoV-2 virus.
Health workers in PPE suits complete paperwork at a coronavirus test desk at Lok Nayak jai Prakash (LNJP) Hospital in New Delhi.(Vipin Kumar/HT PHOTO)
Health workers in PPE suits complete paperwork at a coronavirus test desk at Lok Nayak jai Prakash (LNJP) Hospital in New Delhi.(Vipin Kumar/HT PHOTO)

Sero survey shows 23 per cent may have been Covid positive in Capital

Hindustan Times, New Delhi | By Rhythma Kaul
UPDATED ON JUL 22, 2020 04:38 AM IST
The National Centre for Disease Control (NCDC) tested 21,387 people at random from across Delhi between June 27 and July 10 and results announced on Tuesday showed that 23.48% of these had antibodies for the virus in their blood.
Delhi ended Monday with 85,161 cases and 2,680 deaths
Delhi ended Monday with 85,161 cases and 2,680 deaths

Covid-19: What you need to know today

Hindustan Times, New Delhi | By R Sukumar
UPDATED ON JUN 30, 2020 04:26 AM IST
Across states, even in ones such as Tamil Nadu that are testing aggressively, it isn’t usually possible for someone without symptoms, or who has not had contact with a Covid-positive person, to be tested.
The survey was conducted on the basis of random samples but the sample size was not mentioned.(Sonu Mehta/HT PHOTO)
The survey was conducted on the basis of random samples but the sample size was not mentioned.(Sonu Mehta/HT PHOTO)

Over 14% in Kolkata have Covid-19 antibodies: ICMR seroprevalence survey

Kolkata | By Press Trust of India| Posted by Susmita Pakrasi
UPDATED ON JUN 28, 2020 11:06 PM IST
According to senior doctors, the survey indicated that the transmission is high in the metropolis, which is far from developing herd immunity or antibodies to combat Covid-19.
The study, published in the journal Science and conducted by mathematicians from the University of Nottingham and University of Stockholm, categorized people into separate groups reflecting their age and social activity levels.(File photo for representation)
The study, published in the journal Science and conducted by mathematicians from the University of Nottingham and University of Stockholm, categorized people into separate groups reflecting their age and social activity levels.(File photo for representation)

Covid-19: Herd immunity can be achieved at 43%, new study finds

Hindustan Times, New Delhi | By Dhrubo Jyoti
UPDATED ON JUN 25, 2020 07:57 AM IST
A region can achieve herd immunity against Covid-19 with fewer people than previously estimated, a new study said on Wednesday, but experts cautioned that the humanitarian and medical costs of taking the route continue to remain high, especially in India.
For Covid-19, they said herd immunity is often stated as around 60 per cent, a figure derived from the fraction of the population that must be vaccinated in advance of an epidemic to prevent a large outbreak.(AP file photo)
For Covid-19, they said herd immunity is often stated as around 60 per cent, a figure derived from the fraction of the population that must be vaccinated in advance of an epidemic to prevent a large outbreak.(AP file photo)

Herd immunity threshold could be lower than previously thought: Study

London | By Press Trust of India| Posted by: Harshit Sabarwal
PUBLISHED ON JUN 24, 2020 06:07 PM IST
Scientists, including those from the University of Nottingham in the UK, noted that herd immunity develops when individuals contracting the disease build up natural immunity, and by people receiving a vaccine.
Mumbai, the worst-affected Indian city, saw 1,274 more cases, taking its count to 47,354, while the toll rose to 1,577 with 58 more deaths.(Pratik Chorge/HT Photo)
Mumbai, the worst-affected Indian city, saw 1,274 more cases, taking its count to 47,354, while the toll rose to 1,577 with 58 more deaths.(Pratik Chorge/HT Photo)

BEST to resume bus ops from Monday; Covid tally is 82,968

Hindustan Times, Mumbai | By Surendra P Gangan, Mumbai
UPDATED ON JUN 07, 2020 02:29 AM IST
Meanwhile, state health minister Rajesh Tope announced that the government will procure 10,000 vials of Remdesivir injections for critical patients.
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