New coronavirus infections hit record highs in six U.S. states on Tuesday, marking a rising tide of cases for a second consecutive week as most states moved forward with reopening their economies.
New coronavirus infections are accelerating again in Germany just days after its leaders loosened social restrictions, raising concerns that the pandemic could once again slip out of control.
A genetic analysis of samples from more than 7,500 people infected with COVID-19 suggests the new coronavirus spread quickly around the world late last year and is adapting to its human hosts, scientists said on Wednesday.
South Korean officials on Friday reported 91 patients thought cleared of the new coronavirus had tested positive again, they believe that the virus may have been "reactivated" rather than the patients being re-infected.
A disproportionate number of patients hospitalized by COVID-19 have high blood pressure. Theories about why the condition makes them more vulnerable have sparked a fierce debate among scientists over the impact of widely prescribed blood-pressure drugs. The drugs are known as ACE inhibitor.