HomeNewsBusinessDelta variant to become dominant strain of COVID-19 in coming months: WHO

Delta variant to become dominant strain of COVID-19 in coming months: WHO

In its COVID-19 Weekly Epidemiological Update, the WHO said as of June 29, 2021, "96 countries have reported cases of the Delta variant, though this is likely an underestimate as sequencing capacities needed to identify variants are limited. A number of these countries are attributing surges in infections and hospitalisations to this variant."

July 01, 2021 / 10:55 IST
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In its COVID-19 Weekly Epidemiological Update, the WHO said as of June 29, 2021, "96 countries have reported cases of the Delta variant, though this is likely an underestimate as sequencing capacities needed to identify variants are limited. A number of these countries are attributing surges in infections and hospitalisations to this variant."
In its COVID-19 Weekly Epidemiological Update, the WHO said as of June 29, 2021, "96 countries have reported cases of the Delta variant, though this is likely an underestimate as sequencing capacities needed to identify variants are limited. A number of these countries are attributing surges in infections and hospitalisations to this variant."

The World Health Organization has said the Delta variant of COVID-19 is now present in nearly 100 countries as per conservative estimates, and warned that in the coming months the highly transmissible strain will become the dominant variant of the coronavirus globally.

In its COVID-19 Weekly Epidemiological Update, the WHO said as of June 29, 2021, "96 countries have reported cases of the Delta variant, though this is likely an underestimate as sequencing capacities needed to identify variants are limited. A number of these countries are attributing surges in infections and hospitalisations to this variant."

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Given the increase in transmissibility, the WHO warned that the Delta variant is "expected to rapidly outcompete other variants and become the dominant variant over the coming months."

The world body noted that the tools that exist today to combat the coronavirus — individual, community level-public health and social measures, infection prevention and control measures that have been used since the beginning of the pandemic — remain effective against current variants of concern (VOCs), including the Delta variant.

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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