Will ask all Americans to wear masks for 100 days: Joe Biden
US President-elect Joe Biden on Thursday said that he will ask Americans to wear masks for first 100 days of his presidency to curb the spread of coronavirus. He added that there would be a "significant reduction" in the COVID-19 cases if everyone wore masks. US is the worst coronavirus-hit country in the world with over 1.4 crore COVID-19 cases.