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Why many Covid experts think Americans can ditch their masks soon
- 'Vaccines are the solution' - But accumulating data from the real world has shown that -- as many immunologists had expected -- the vaccines are extremely effective at preventing asymptomatic infection, said Monica Gandhi, an infectious disease physician and professor also at UCSF.A study among health workers from Britain showed an 86 percent reduction in asymptomatic infection after two doses of the Pfizer shot while a huge Israel study of the general population showed 94 percent efficacy.The news gets even better: Because the outbreak itself is declining, the actual rate of so-called "breakthrough infections" is very, very low.According to data reported to the CDC as of April 26, some 9,000 people out of 95 million people became