The CDC reported last week that some Coronavirus testing kits have been sent to U.S. states.
However, at least 30 countries produced "inconclusive" results due to a flawed component.
The CDC planned to send replacement materials to make the kits work, reports Reuters.
The CDC has set up surge testing capacity until new testing kits become available.
The entire world is on high alert against the virus as people continue to travel internationally.
Many fear the virus will travel rapidly after the 2020 Olympics in Japan this summer.