Reid Kennedy, materials manager at San Francisco General Hospital, stands next to racks of saline solution. He has had to carefully manage the hospital's supply of saline during this shortage. Mark Andrew Boyer/KQED hide caption

itoggle caption Mark Andrew Boyer/KQED

Don Wright runs at an indoor track at the Maplewood Community Center in North Saint Paul, Minn. Ariana Lindquist for NPR hide caption

itoggle caption Ariana Lindquist for NPR