People wearing face masks are seen at a metro station in Cairo, Egypt, on March 31, 2020. Egypt's Health Ministry confirmed on Tuesday 54 new cases of COVID-19, raising the tally of infections in the country to 710. (Photos: Xinhua)

A man wearing a face mask and gloves is seen at a metro station in Cairo, Egypt, on March 31, 2020. Egypt's Health Ministry confirmed on Tuesday 54 new cases of COVID-19, raising the tally of infections in the country to 710.

A man wearing a face mask works at a metro station in Cairo, Egypt, on March 31, 2020. Egypt's Health Ministry confirmed on Tuesday 54 new cases of COVID-19, raising the tally of infections in the country to 710.

A worker disinfects a metro station in Cairo, Egypt, on March 31, 2020. Egypt's Health Ministry confirmed on Tuesday 54 new cases of COVID-19, raising the tally of infections in the country to 710. (Xinhua/Ahmed Gomaa)

A man helps a boy wear a face mask at a metro station in Cairo, Egypt, on March 31, 2020. Egypt's Health Ministry confirmed on Tuesday 54 new cases of COVID-19, raising the tally of infections in the country to 710.

A man wearing a face mask passes a turnstile at a metro station in Cairo, Egypt, on March 31, 2020. Egypt's Health Ministry confirmed on Tuesday 54 new cases of COVID-19, raising the tally of infections in the country to 710.