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COVID-19 | 79% seropositivity in adult urban population, latest national sero-survey reveals

The WHO-AIIMS survey shows that seropositivity in persons below and above 18 years of age in the country is almost equal at 67 percent.

June 18, 2021 / 07:35 PM IST
NITI Aayog member Dr VK Paul addressed a Health Ministry briefing on June 18 (Image: ANI)

NITI Aayog member Dr VK Paul addressed a Health Ministry briefing on June 18 (Image: ANI)

The latest national sero-survey conducted jointly by the World Health Organization (WHO) and the All India Institute of Medical Sciences (AIIMS) has revealed that around 67 percent of people aged above 18 years have been exposed to COVID-19 in India.

The survey has also revealed that the seropositivity rate in the country is almost the same in people aged below 18 years.

NITI Aayog member Dr VK Paul said at a Union Health Ministry briefing held on June 18: “The WHO-AIIMS survey shows seropositivity in persons below and above 18 years of age is almost equal. In persons above 18, the seropositivity rate is 67 percent and 59 percent in persons below 18. In urban areas, it is 78 percent in persons below 18 and 79 percent in persons above 18 years of age.”

“In rural areas, the seropositivity rate is 56 percent in persons below 18 years of age and 63 percent in persons above 18.”

He added: “This information shows that the children were infected, but it was very mild. Only isolated cases of infection may occur in children (during the third wave of COVID-19).”

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COVID-19 Vaccine

Frequently Asked Questions

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How does a vaccine work?

A vaccine works by mimicking a natural infection. A vaccine not only induces immune response to protect people from any future COVID-19 infection, but also helps quickly build herd immunity to put an end to the pandemic. Herd immunity occurs when a sufficient percentage of a population becomes immune to a disease, making the spread of disease from person to person unlikely. The good news is that SARS-CoV-2 virus has been fairly stable, which increases the viability of a vaccine.

How many types of vaccines are there?

There are broadly four types of vaccine — one, a vaccine based on the whole virus (this could be either inactivated, or an attenuated [weakened] virus vaccine); two, a non-replicating viral vector vaccine that uses a benign virus as vector that carries the antigen of SARS-CoV; three, nucleic-acid vaccines that have genetic material like DNA and RNA of antigens like spike protein given to a person, helping human cells decode genetic material and produce the vaccine; and four, protein subunit vaccine wherein the recombinant proteins of SARS-COV-2 along with an adjuvant (booster) is given as a vaccine.

What does it take to develop a vaccine of this kind?

Vaccine development is a long, complex process. Unlike drugs that are given to people with a diseased, vaccines are given to healthy people and also vulnerable sections such as children, pregnant women and the elderly. So rigorous tests are compulsory. History says that the fastest time it took to develop a vaccine is five years, but it usually takes double or sometimes triple that time.

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Dr VK Paul added that recent studies have revealed that the chances of hospitalisation in COVID-19 patients reduced by 75-80 percent after vaccination.

He said: “Studies show that chances of hospitalisation are 75-80 percent less in vaccinated individuals. The possibility of such individuals needing oxygen support is around eight percent and the risk of ICU admission is only six percent in vaccinated persons.”

The second wave of COVID-19, which peaked in April-May, has begun receding in India. The country continued to report less than a lakh new COVID-19 cases in a day with 62,480 new coronavirus infections. India’s total COVID-19 tally now stands at 2,97,62,793. Meanwhile, with 1,587 fresh fatalities, the death toll rose to 3,83,490, the Union Health Ministry said on June 18.

(With ANI inputs)

Follow our coverage of the coronavirus crisis here
Moneycontrol News
first published: Jun 18, 2021 07:35 pm

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