In pictures: Inside Wuhan, epicenter of China's coronavirus outbreak

Medical workers in protective suits attend to novel coronavirus patients at the intensive care unit (ICU) of a designated hospital in Wuhan. The death toll from the novel coronavirus outbreak surged past 1,000 in China on Tuesday as the World Health Organization warned that the epidemic poses a "very grave" global threat.

Workers in protective suits examine specimens inside a laboratory in Wuhan. Beijing is struggling to contain the disease that has now infected more than 42,000 and reached some 25 countries.

A road to Wuhan Tianhe International Airport is seen deserted. Chinese authorities have locked down millions of people in a number of cities, while several governments have banned arrivals from China and major airlines have suspended flights in a bid to keep the disease away from their shores.

A worker measures body temperature of people leaving a supermarket in Qingshan district, Hubei province

Medical workers in protective suits move a novel coronavirus patient at an isolated ward of a designated hospital in Wuhan

Cars travel next to closed shops in Wuhan

People wearing face masks walk outside the Central Hospital of Wuhan

Cleaning workers wear face masks outside a closed shop in Wuhan

Workers operate a vehicle to carry out disinfection in Jianghan district, Hubei province

Medical workers in protective suits move a patient at an isolated ward of a hospital in Caidian district, Hubei province

Workers set up medical equipment at the new Leishenshan Hospital, a makeshift hospital for treating patients of the new coronavirus that is under construction, in Wuhan

A medical worker in protective suit is seen at an isolated ward of a hospital in Caidian district, Hubei province

A blocked road is seen in Wuhan

Medical workers in protective suits attend to patients at the Wuhan International Conference and Exhibition Center, which has been converted into a makeshift hospital to receive patients with mild symptoms caused by the novel coronavirus, in Wuhan

Workers set up beds at the Wuhan Parlor Convention Center to convert it into a makeshift hospital

Community workers distribute free vegetables to members of households inside the residential compound in Wuhan

A worker sets up beds at the Hongshan Stadium to convert it into a makeshift hospital in Wuhan

Customers wearing face masks shop inside a supermarket in Wuhan

A worker in a protective suit examines specimens inside a laboratory in Wuhan

A worker is seen inside a convenience store in Wuhan

A delivery worker for a supermarket chain rides an electric bike in Wuhan