San Francisco is beginning to really take control of the pandemic, and researchers believe that the city may now have achieved so-called herd immunity.
The city with around 900,000 inhabitants now registers an average of 13.7 cases of infection per day.
Although cases of infection are still registered, they do not spread in society in the same way as before, and no major outbreaks occur, writes The Guardian.
This may be because many people are protected against covid-19 so that the virus does not gain a foothold. This is called herd immunity.
Individual cases
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– This is what herd immunity looks like. “You get individual cases, but they do not spread,” George Rutherford, a professor of epidemiology at the University of California San Francisco (UCSF), told The Guardian.
79 percent of everyone over the age of 12 in the city has now received the first vaccine dose, while 68 percent have been fully vaccinated, shows figures from the municipality. In the United States, among other things, the Pfizer vaccine is approved for use by everyone over 12 years.
Researchers estimate that around 75 percent of the population needs to be protected to gain immunity.
– Do not rest
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“There are no other cities that have these numbers when it comes to setting the first dose, even places that vaccinated faster than us,” says Professor Monica Gandhi. ABC7.
Professor of Infectious Diseases at UCSF, Peter Chin-Hong, tells The Guardian that if you count those who have antibodies after going through the disease, then probably many are protected to have gained herd immunity.
– I hope people still go and get vaccinated and do not rest on their laurels. The virus will always be something we have to think about, says Chin-Hong.
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