(CNN) Health experts are warning the national count of Covid-19 deaths in the United States could be underestimated as the coronavirus pandemic continues to spread. In March, the CDC introduced a new code to accurately capture mortality due to Covid-19 on death certificates. Last week, The US Food and Drug Administration issued its first emergency use authorization for a coronavirus test that looks for antibodies in the blood. Unlike most coronavirus tests, which generally require a swab and look for signs of the virus itself, antibody tests look instead for the body's response to a virus. "This will be probably the toughest week between this week and next week," the President said at a White House briefing Saturday.

Source: CNN April 06, 2020 22:52 UTC