March 20, 2020 / JULIET LINDERMAN
The critical shortage of medical supplies across the U.S., including testing swabs, protective masks, surgical gowns and hand sanitizer, can be tied to a sudden drop in imports, mostly from China, The Associated Press has found.
Trade data shows the decline in shipments started in mid-February after the spiraling coronavirus outbreak in China led the country to shutter factories and disrupted ports. Some emergency rooms, hospitals and clinics in the U.S. have now run out of key medical supplies, while others are rationing personal protective equipment like gloves and masks. 
The United States counts on receiving the vast majority of its medical supplies from China, where the coronavirus has infected more than 80,000 people and killed more than 3,200. When Chinese medical supply factories began coming back on line last month, their first priority was their own hospitals.
The government required makers of N95 masks to sell all or part of their production internally instead of shipping masks to the U.S.
The most recent delivery of medical-grade N95 masks arrived from China about a month ago, on Feb. 19. And as few as 13 shipments of non-medical N95 masks have arrived in the past month — half as many as arrived the same month last year. N95 masks are used in industrial settings, as well as hospitals, and filter out 95% of all airborne particles, including ones too tiny to be blocked by regular masks.