20,000: US death toll overtakes Italy's as Midwest braces

Prime Minister Boris Johnson, the first major world leader confirmed to have COVID-19, continued to recover at a London hospital, where he was able to take short walks, according to his office.

Worldwide, confirmed infections rose above 1.7 million, with over 108,000 deaths, according to Johns Hopkins. More than 400,000 people have recovered.

For most people, the coronavirus causes mild or moderate symptoms, such as fever and cough. But for others, especially older people and those with health problems, it can cause severe symptoms like pneumonia. 

- Xinhua and AP