Director General Tedros Adhanom Ghebreyesus said, in a virtual press conference, “ Herd immunity is a concept used for vaccination, in which a population can be protected from a particular virus if the vaccination threshold is reached. “
He gave an example, for example for measles, it is estimated that if 95 percent of the population is vaccinated, the remaining 5 percent will also be protected from the spread of the virus.
For polio, the threshold is estimated at 80 percent, according to Tedros.
“Herd immunity achieved by protecting people from the virus, not by exposing them to the virus, “Tedros was quoted as saying AFP.
“There has never been a history of public health herd immunity used as a strategy to deal with the outbreak, let alone a pandemic, “he said.
Rely herd immunity naturally in such a situation it would be “problematic scientifically and ethically,” said the man from Eritrea.
“Leaving dangerous viruses that we don’t fully understand to escape is unethical. It’s not an option.”
He also cited the lack of information about the development of immunity to Covid-19, including how strong the immune response was and how long the antibodies remained in the body.
Tedros also pointed out that it is estimated that less than 10 percent of the population in most countries is believed to have contracted the disease.
“Most people in many countries remain vulnerable to this virus,” he said.