Iraqi staff members work at the new PCR (polymerase chain reaction) lab built by the Chinese team of experts in Baghdad, Iraq, March 30, 2020. A Chinese team of seven experts has been working with their Iraqi counterparts since March 7 in Iraq to fight against the COVID-19 epidemic. (Photos: Xinhua)

Yang Honghui (1st R), a member of Chinese medical experts team, enters the Central Public Health Laboratory (CPHL) in Baghdad, Iraq, March 26, 2020. A Chinese team of seven experts has been working with their Iraqi counterparts since March 7 in Iraq to fight against the COVID-19 epidemic.

Chen Huai (1st R) and Ai Hexu (2nd R), members of Chinese medical experts team, talk with local radiologists in Baghdad, Iraq, March 30, 2020. A Chinese team of seven experts has been working with their Iraqi counterparts since March 7 in Iraq to fight against the COVID-19 epidemic.

Members of Chinese medical experts team visit a Chinese enterprise and guide the anti-epidemic work in Erbil, Iraq, March 31, 2020. A Chinese team of seven experts has been working with their Iraqi counterparts since March 7 in Iraq to fight against the COVID-19 epidemic.

Chen Huai (front) and Ai Hexu, members of Chinese medical experts team, check the chest computed tomography (CT) images in Baghdad, Iraq, March 30, 2020. A Chinese team of seven experts has been working with their Iraqi counterparts since March 7 in Iraq to fight against the COVID-19 epidemic.

Chen Huai (2nd R) and Ai Hexu (1st L), members of Chinese medical experts team, talk with local radiologists in Baghdad, Iraq, March 30, 2020. A Chinese team of seven experts has been working with their Iraqi counterparts since March 7 in Iraq to fight against the COVID-19 epidemic.