(COLOMBO, LANKAPUVATH) – The head of the World Health Organization has ruled out a herd immunity response to the pandemic.
Herd immunity occurs when a large portion of a community becomes immune to a disease through vaccinations or through the mass spread of a disease.
Some have argued that coronavirus should be allowed to spread naturally in the absence of a vaccine.
But WHO chief Tedros Ghebreyesus said such an approach was “scientifically and ethically problematic”.
There have been more than 37 million confirmed cases of coronavirus across the globe since the pandemic began. More than one million people are known to have died.
While hundreds of vaccines are currently under development, with a number in advanced trials, none has yet received international approval. (BBC News)