coronavirus pandemic. Coronavirus: What is herd immunity and what does it mean for COVID-19? Fauci says backing herd immunity — the idea that a disease will stop spreading once nearly everybody has contracted it — is “total nonsense.”The top U.S.
infectious disease expert says: “If you talk to anybody who has any experience in epidemiology and infectious diseases, they will tell you that that is risky and you’ll wind up with many more infections of vulnerable people, which will lead to hospitalizations and death,” he told ABC’s “Good Morning America” on Thursday.“So I think that we’ve just got to look that square in the eye and say it’s nonsense.” What is the ‘Swiss cheese model’ and how can it apply to coronavirus?