ADEN, May 20, 2020 (Xinhua) -- People attempt to extinguish blaze of a car after its collision with an oil carrier truck in Aden, Yemen, May 19, 2020. Two people were killed and three others were injured after an oil carrier truck and a car collided in Yemens southern port city of Aden on Tuesday, a security official told Xinhua.

VIENTIANE, May 20, 2020 (Xinhua) -- Students wearing masks attend classes at a school in Vientiane, Laos, May 19, 2020. The Lao government has announced all students nationwide can go back to schools on June 2, while final-year classes in primary, lower and upper secondary schools began on Monday. Lao Health Ministry announced its first two confirmed COVID-19 cases at its daily press conference on March 24, and so far the country has detected 19 confirmed COVID-19 cases.

DAMASCUS, May 20, 2020 (Xinhua) -- Farmers harvest garlic in the countryside near Damascus, Syria, May 19, 2020.

JIANGXI, May 20, 2020 (Xinhua) -- Tourists walk through a tunnel at a tourist spot in Wanzai County, east Chinas Jiangxi Province, May 19, 2020. May 19 marks the China Tourism Day

OSTIA (ITALY), May 20, 2020 (Xinhua) -- People enjoy leisure time on a beach in Ostia, Italy, on May 19, 2020. A further 162 COVID-19 patients had died in the past 24 hours in Italy, bringing the countrys toll to 32,169, out of total infection cases of 226,699, according to fresh figures on Tuesday.

GAZA, May 20, 2020 (Xinhua) -- Palestinian children play in a puddle of water to stay cool during hot weather on the outskirts of southern Gaza Strip city of Khan Younis, on May 19, 2020.

BEIRUT, May 20, 2020 (Xinhua) -- A worker disinfects a suitcase belonging to a person returning from abroad in front of a hotel in Beirut, Lebanon, on May 19, 2020. Lebanons number of COVID-19 infections increased on Tuesday by 23 cases to 954, while the death toll remained unchanged at 26, the National News Agency reported.

BALI (INDONESIA), May 20, 2020 (Xinhua) -- Veterinarians wearing protective suits check the condition of a stray dog as part of the pet health service amid the COVID-19 outbreak in Bali, Indonesia, on May 19, 2020. On Tuesday, the health ministry reported 486 new infection cases of COVID-19 across Indonesia, bringing the total to 18,496

SANAA, May 20, 2020 (Xinhua) -- Workers disinfect a street to curb the spread of COVID-19 in Sanaa, Yemen, on May 19, 2020.

LAHORE (PAKISTAN), May 20, 2020 (Xinhua) -- Workers disinfect a railway station in eastern Pakistans Lahore, on May 19, 2020. The train services in Pakistan will be partially restored from Wednesday under standard operating procedures to enable people to celebrate upcoming Eid al-Fitr holidays.