A medical worker takes a sample from a man for COVID-19 testing in Sadr City district in Baghdad, Iraq, on May 20, 2020. The Iraqi Health Ministry on Thursday recorded 153 new cases of COVID-19, the highest daily increase so far, bringing the total number of infections to 3,877 in the country. (Xinhua/Khalil Dawood)

A medical worker takes a sample from a man for COVID-19 testing in Sadr City district in Baghdad, Iraq, on May 21, 2020. The Iraqi Health Ministry on Thursday recorded 153 new cases of COVID-19, the highest daily increase so far, bringing the total number of infections to 3,877 in the country. (Xinhua/Khalil Dawood)

A medical worker takes a sample from a boy for COVID-19 testing in Sadr City district in Baghdad, Iraq, on May 21, 2020. The Iraqi Health Ministry on Thursday recorded 153 new cases of COVID-19, the highest daily increase so far, bringing the total number of infections to 3,877 in the country. (Xinhua/Khalil Dawood)

Medical workers are seen in Sadr City district in Baghdad, Iraq, on May 21, 2020. The Iraqi Health Ministry on Thursday recorded 153 new cases of COVID-19, the highest daily increase so far, bringing the total number of infections to 3,877 in the country. (Xinhua/Khalil Dawood)

A medical worker disinfects an auto rickshaw in Sadr City district in Baghdad, Iraq, on May 21, 2020. The Iraqi Health Ministry on Thursday recorded 153 new cases of COVID-19, the highest daily increase so far, bringing the total number of infections to 3,877 in the country. (Xinhua/Khalil Dawood)