To achieve 'herd immunity' against a virus, at least 50 of the population has to be immune.br And according to Business Insider, experts say the US is nowhere near achieving herd immunity for the coronavirus.br Only an estimated 2-3 of Americans have recovered from COVID-19 so far.br At the community level, there would not have been enough infections to really have enough umbrella of herd immunity. Dr. Anthony Fauci Director, National Institute of Allergy and Infectious Diseasesbr Beating COVID-19 will demand on-and-off social distancing, widespread testing, case isolation, and contact tracing until a vaccine is widely available.