The U.S. and Europe lag on implementing an essential weapon against the virus: contact tracing.

Experts have warned that fall will be a uniquely challenging time for combating the pandemic, yet one of the most essential tools for stemmi...

Experts have warned that fall will be a uniquely challenging time for combating the pandemic, yet one of the most essential tools for stemming the spread of the coronavirus still has not been widely deployed in the United States and Europe.

from World News https://ift.tt/33s4KGu