HomeNewscoronavirusPrepare for disease deadlier than Covid, warns WHO chief

Prepare for disease deadlier than Covid, warns WHO chief

Speaking at the assembly weeks after ending the global emergency status for the COVID-19 pandemic, Tedros Adhanom Ghebreyesus said it was time to advance negotiations on preventing the next pandemic.

May 24, 2023 / 16:33 IST
Story continues below Advertisement
WHO chief Tedros Adhanom Ghebreyesus
WHO chief Tedros Adhanom Ghebreyesus

World Health Organisation (WHO) director general on May 23 warned the world leaders to start preparing for a disease even deadlier than COVID-19.

Speaking at the assembly weeks after ending the global emergency status for the COVID-19 pandemic, Tedros Adhanom Ghebreyesus said it was time to advance negotiations on preventing the next pandemic.

Story continues below Advertisement

"We cannot kick this can down the road," the WHO director-general said in a major address to the agency's member states, warning that the next pandemic was bound to "come knocking".

“If we do not make the changes that must be made, then who will? And if we do not make them now, then when?," he added.

COVID-19 Vaccine
Frequently Asked Questions

View more

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.
View more
+ Show