Romina Libster: The power of herd immunity

How do vaccines prevent disease — even among people too young to get vaccinated? It's a concept called "herd immunity," and it relies on a critical mass of people getting their shots to break the chain of infection. Health researcher Romina Libster shows how herd immunity contained a deadly outbreak of H1N1 in her hometown. (In Spanish with subtitles.)

Następny odcinek

S2015E35 - Ben Wellington: How we found the worst place to park in New York City -- using big data