Garrett Ward sprays disinfectant behind a plexiglass panel at a Hy-Vee grocery store in Overland Park, Kan., on March 26. Stores have begun installing the shields in checkout aisles to protect clerks and help stop the spread of the coronavirus.

Garrett Ward sprays disinfectant behind a plexiglass panel at a Hy-Vee grocery store in Overland Park, Kan., on March 26. Stores have begun installing the shields in checkout aisles to protect clerks and help stop the spread of the coronavirus.