“Herd immunity has never been used in the history of public health as a strategy to respond to an epidemic, much less a pandemic.”

“Herd immunity has never been used in the history of public health as a strategy to respond to an epidemic, much less a pandemic. It is a scientific and ethical question. It is simply unethical to ignore a dangerous virus that we do not know everything about. This is not an option, ” WHO Director-General Tedros Adhanom Ghebreyesus said at a press conference.

The coronavirus pandemic has killed more than a million people worldwide since the WHO China office reported the disease in late December. “The vast majority of people in most countries are susceptible to this virus. Seroprevalence surveys suggest that in most countries less than 10% of the population has been infected ”, A details Tedros Adhanom Ghebreyesus.

He also explained that specialists do not know enough about the immunity enjoyed by people who have been infected with SARS-CoV-2. “Most people infected with the virus develop an immune response in the first few weeks, but we do not know if this response is strong or long-lasting or if it differs from person to person.“he added.