Vaccines could prevent asymptomatic infection. Here’s why that’s key to ending the pandemic.

If vaccines can halt asymptomatic spread, then “you could potentially vaccinate your way out of the epidemic,” one expert said.

Vaccine distribution is ramping up in many countries, but with Covid-19 cases also climbing once again and the prospect of another surge of infections on the horizon, the world is in a race against time.

Key to winning the race, experts say, is not only whether the vaccines will play a significant role in preventing serious illness from Covid-19, but also whether they can block people from spreading the virus.

“The ideal vaccine would have two performance features: One prevents you from going to the hospital, going to the ICU and losing your life,” said Dr. Peter Hotez, co-director of the Center for Vaccine Development at Texas Children’s Hospital and dean of the National School of Tropical Medicine at Baylor College of Medicine. “But if the vaccine also halts asymptomatic spread, then you could potentially vaccinate your way out of the epidemic.” Continue reading.