In the United States, vaccination is in full swing. President Joe Biden recently assured the country will have enough vaccines for every adult by the end of May. And, according to CNN, if health officials continue to vaccinate nearly two million Americans a day – that’s the current rate – then herd immunity could be achieved by mid-September. We must also take into account the natural immunity acquired by people who have already contracted Covid-19 in the previous months.
But what is collective immunity? It is a stage, in an epidemic like that of the coronavirus, where a certain percentage of the population is protected against the disease, which makes it possible to stop its progression. In the United States, health experts including Anthony Fauci, a renowned immunologist and White House adviser on health crisis, estimate that between 70 and 85% of the population must be immunized for the he epidemic stops.
70% of Americans immunized by July?
In reality, the 70% could be reached sooner than expected. Because these estimates were made with current data, which only takes into account the delivery and administration of double doses of Pfizer and Moderna vaccines. Except that the Johnson & Johnson single dose vaccine has been approved.
According to CNN, with Pfizer, Moderna and Johnson & Johnson in their vaccine arsenal, the United States could thus reach 70% immunity at the end of July, then 85% in mid-September.
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