World Health Organization (WHO) Director-General Tedros Adhanom Ghebreyesus addressed on Monday the recent discussions on herd immunity response to the pandemic as cases resurge globally.
Tedros said that adapting the herd immunity response would be “scientifically ethically problematic” as most of the world’s population is still susceptible to the virus.
He added that the long-term impacts of COVID-19 are still not fully understood and that there isn’t enough knowledge on COVID-19 immunity as there have been cases of people getting re-infected with the virus.
It’s also not clear how strong and lasting COVID-19 immunity is, as the immune response differs from one person to another.
The director-general gave the example of herd immunity against measles which requires about 95 per cent of the population to be vaccinated with the remaining 5 per cent to be protected by the fact that measles will not spread among those who are vaccinated.
“In other words, herd immunity is achieved by protecting people from a virus, not by exposing them to it,” he said.
Cases around the world are now over 37 million, with deaths surpassing 1 million.
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