Top U.S. health officials don’t know if group immunity will reach in the coming months



Dr. Francis Collins, director of the National Institutes of Health (NIH), said he was uncertain whether herd immunity would be achieved in the United States within the next few months.

In an interview with HillAchieving herd immunity depends on “reliable voice” convincing people who are hesitant to vaccinate COVID-19, a disease caused by the CCP (Chinese Communist Party) virus, Collins said. Said.

“I don’t know. Given what polls are telling you about resistance, it’s not a slam dunk,” Collins said. So far, emergency use is permitted in the United States — Pfizer / BioNTech, Moderna, Johnson & Johnson.

“This is very important and it will be months to carefully observe if some of these trends will improve with the right messages from trusted people,” he said.

Herd immunity occurs when a sufficient majority of the population has acquired immunity from an infectious disease. The infection no longer spreads naturally from previous infections or temporarily by vaccination.

But in October 2020, the World Health Organization (WHO) was silent Herd immunity Include only acquired immunity from vaccination.

“Herd immunity, also known as” herd immunity, “is a concept used for vaccination that can protect a population from a particular virus when the vaccination threshold is reached.” WHO says.

afterwards, December 31, WHO has naturally returned acquired immunity from previous infections to the definition of herd immunity, emphasizing that health agencies “help achieve’herd immunity’through vaccination.”

Experts do not yet know what percentage of the population needs to be immune to achieve herd immunity. However, Dr. Anthony Fauci, chief medical adviser to President Joe Biden and former President Donald Trump, estimates that at least 70% of Americans need the COVID-19 vaccine before reaching herd immunity. I will.

By the end of the first 100 days after taking office, the president aimed to administer 200 million COVID-19 shots to people in need of the vaccine. This is twice the original goal. As of March 25, the United States had administered 133.3 million COVID-19 shots.

Two of the three licensed COVID-19 vaccines require two doses. Another, Johnson & Johnson’s is a single shot.

Collins told Hill that a “trustworthy voice” must work to resolve vaccine-related questions, such as concerns about the speed of vaccine development.

“This concern about their rush can be answered by pointing out how speed was achieved.

“There was no shortcut to take rigorous steps to evaluate these vaccines. The shortcuts are downtime, bureaucracy, bureaucracy, bureaucracy, and more money back when you run out. It was to remove the need to procure.

“This is really a pandemic, and we realized that people were dying and all of it was planned in advance, so speed of preparation should not be considered a source of safety concerns. It’s certainly a message to reassure people, “Collins said.

A few days ago, the NIH director told Fox News that hesitation in the vaccine could “cause this pandemic lasts longer than necessary.”

Meiling Lee contributed to this report.

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