herd immunity

As COVID-19 cases are declining in Ohio, new research suggests Ohio will not reach herd immunity until November. Health officials announced Monday that nearly 39 percent of the state’s population is fully vaccinated, but many wonder if Ohio will reach the benchmark for herd immunity of at least 70 percent. That’s when enough of the population is immune to COVID-19 that new infections are unlikely and when some experts say there could be a full return to normalcy.

Nearly a third of adults in the U.S. have gotten at least one shot of the COVID-19 vaccine so far, but researchers warn that vaccine refusal may keep the country from reaching herd immunity.

Coronavirus

Vaccine Refusal May Put Herd Immunity At Risk, Researchers Warn

Geoff Brumfiel

One in four Americans say they won't get a coronavirus vaccine. Researchers say it could keep the nation from reaching a critical tipping point.

Nurse manager Lucy Golding draws up doses of the Moderna COVID-19 vaccine March 14 in Stamford, Conn. Moderna has begun enrolling infants and young children into a vaccine trial.

Vaccinating Children Seen As A Key Step Toward COVID-19 Herd Immunity

A Martínez

Moderna has begun testing its vaccine on children as young as 6 months old. A principal investigator in the trial says getting children vaccinated would be "a step getting back to our normal life."