This fall, the U.S. will need to vaccinate huge numbers of Americans in the middle of a public-health crisis. It will also be a valuable dry run should a coronavirus shot arrive months later.
The annual U.S. flu vaccine campaign has been cast into disarray by COVID-19, with people staying away from pharmacies, schools, offices, hospitals and other places where they typically get their shots. But with fears of a flu surge colliding with the coronavirus pandemic, health authorities are looking at how one vaccine effort can inform the other.
