The term “herd immunity” means that an entire population is protected against a disease. Herd immunity is achieved when most people in a group are immune to an illness, limiting the ability of germs to spread. The U.S. is vaccinating people against COVID-19 as quickly as possible in an effort to reach 85% of the population, the number medical experts say is needed for herd immunity. Many people are reluctant to get vaccinated, however, raising concerns among public health officials about the country’s ability to achieve its goal and beat the virus. Listen to learn about the push to achieve herd immunity and how public health officials are addressing vaccine hesitancy.
Update: Since this story aired, everyone in the U.S. aged 16 and over has become eligible for the COVID-19 vaccine.
Story Length: 4:32
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