A vendor selling traditional daggers, or Jambiyas, waits for customers as he poses for the camera at his market stall amid novel coronavirus spread concerns in the old quarter of Sanaa, Yemen June 2, 2020. REUTERS/Khaled Abdullah

A man walks through a market amid novel coronavirus spread concerns in the old quarter of Sanaa, Yemen June 2, 2020. REUTERS/Khaled Abdullah

A man wearing a protective mask poses for a picture at a market amid novel coronavirus spread concerns in the old quarter of Sanaa, Yemen June 2, 2020. REUTERS/Khaled Abdullah

A sweets vendor waits for customers at his shop at a market amid novel coronavirus spread concerns in the old quarter of Sanaa, Yemen June 2, 2020. REUTERS/Khaled Abdullah

People sit at a market's cafe amid novel coronavirus spread concerns in the old quarter of Sanaa, Yemen June 2, 2020. REUTERS/Khaled Abdullah

A man wearing a protective mask buys corn from a street vendor at a market amid novel coronavirus spread concerns in the old quarter of Sanaa, Yemen June 2, 2020. REUTERS/Khaled Abdullah

A man wearing a protective mask walks at a market amid novel coronavirus spread concerns in the old quarter of Sanaa, Yemen June 2, 2020. REUTERS/Khaled Abdullah

A man wearing a protective mask walks at a market amid novel coronavirus spread concerns in the old quarter of Sanaa, Yemen June 2, 2020. REUTERS/Khaled Abdullah

A Saudi woman wearing a face mask walks at the Hayat mall after restaurants and malls reopened as the government eases the coronavirus lockdown restrictions, in Riyadh, Saudi Arabia June 1, 2020. REUTERS/Ahmed Yosri

People fish during the sun set, following the outbreak of the coronavirus disease (COVID-19), in Manama, Bahrain, June 1, 2020. REUTERS/Hamad I Mohammed

A fishing boat heading into the sea is seen during the outbreak of the coronavirus disease (COVID-19), in Manama, Bahrain, June 1, 2020. REUTERS/Hamad I Mohammed

People sit at the Hayat mall coffee shop court after restaurants and malls reopened as the government eases the coronavirus lockdown restrictions, in Riyadh, Saudi Arabia June 1, 2020. REUTERS/Ahmed Yosri

A Saudi woman walks in the Hayat mall after restaurants and malls reopened as the government eases the coronavirus lockdown restrictions, in Riyadh, Saudi Arabia June 1, 2020. REUTERS/Ahmed Yosri

Youth dive into the sea to take a swim and cool off, during the outbreak of the coronavirus disease (COVID-19), in Manama, Bahrain, June 1, 2020. REUTERS/Hamad I Mohammed

A fisherman wearing a face mask prepares his fishing cage, at a fishing harbour port, following the outbreak of the coronavirus disease (COVID-19), in Manama, Bahrain, June 1, 2020. REUTERS/Hamad I Mohammed

Women wear face masks as they walk at the Hayat mall after restaurants and malls reopened as the government eases the coronavirus lockdown restrictions, in Riyadh, Saudi Arabia June 1, 2020. REUTERS/Ahmed Yosri

People eat at the Hayat mall food court after restaurants and malls reopened as the government eases the coronavirus lockdown restrictions in Riyadh, Saudi Arabia June 1, 2020. REUTERS/Ahmed Yosri

Members of the Popular Mobilization Forces (PMF), who volunteered to work at the cemetery, wear protective suits as they carry the body of a man who passed away due to coronavirus disease (COVID-19) , before burying him at the new Wadi Al-Salam cemetery, which is dedicated to those who died of coronavirus disease (COVID-19), on the outskirts of the holy city of Najaf, Iraq May 20, 2020. Picture taken May 20, 2020. REUTERS/Alaa al-Marjani

A member of the Popular Mobilization Forces (PMF), who volunteered to work in a cemetery, wears a protective suit, as he burns clothes they used for burial, near the new Wadi Al-Salam cemetery, which is dedicated to those who died of the coronavirus disease (COVID-19), on the outskirts of the holy city of Najaf, Iraq May 25, 2020. Picture taken May 25, 2020. REUTERS/Alaa al-Marjani TPX IMAGES OF THE DAY

A member of the Popular Mobilization Forces (PMF), who volunteered to work in the cemetery, wears a protective suit as he hangs masks and gloves to dry them after sterilization at the new Wadi Al-Salam cemetery, which is dedicated to those who died of the coronavirus disease (COVID-19), on the outskirts of the holy city of Najaf, Iraq May, 25. 2020. Picture taken May, 25. 2020. REUTERS/Alaa al-Marjani

Members of the Popular Mobilization Forces (PMF), who volunteered to work at the cemetery, wear protective suits as they bury the coffin of a man who passed away due to coronavirus disease (COVID-19) at new Wadi Al-Salam cemetery, which is dedicated to those who died of coronavirus disease (COVID-19), on the outskirts of the holy city of Najaf, Iraq May 20, 2020. Picture taken May 20, 2020. REUTERS/Alaa al-Marjani

Abdelhussan Kadhim, from the Popular Mobilization Forces (PMF), who volunteered to work in the cemetery, wearing a protective suit, takes a rest at the new Wadi Al-Salam cemetery, which is dedicated to those who died of the coronavirus disease (COVID-19), on the outskirts of the holy city of Najaf, Iraq May, 22. 2020. Picture taken May, 22. 2020. REUTERS/Alaa al-Marjani

A bulldozer puts soil on the grave of a man who passed away due to coronavirus disease (COVID-19) at the new Wadi Al-Salam cemetery, which is dedicated to those who died of coronavirus disease (COVID-19), on the outskirts of the holy city of Najaf, Iraq May 20, 2020. Picture taken May 20, 2020. Picture taken through a window. REUTERS/Alaa al-Marjani

A grave of a christian man who passed away due to the coronavirus disease (COVID-19) is pictured at the new Wadi Al-Salam cemetery, which is dedicated to those who died of the coronavirus disease (COVID-19), on the outskirts of the holy city of Najaf, Iraq May, 25. 2020. Picture taken May, 25. 2020. REUTERS/Alaa al-Marjani

Abdelhussan Kadhim, from the Popular Mobilization Forces (PMF), who volunteered to work in the cemetery, gets help from his fellow to put on his protective mask, at new Wadi Al-Salam cemetery, which is dedicated to those who died of the coronavirus disease (COVID-19), on the outskirts of the holy city of Najaf, Iraq May, 21. 2020. Picture taken May, 21. 2020. REUTERS/Alaa al-Marjani

Abdelhussan Kadhim, from the Popular Mobilization Forces (PMF), who volunteered to work in the cemetery, wears his protective suit, at new Wadi Al-Salam cemetery, which is dedicated to those who died of the coronavirus disease (COVID-19), on the outskirts of the holy city of Najaf, Iraq May, 21. 2020. Picture taken May, 21. 2020. REUTERS/Alaa al-Marjani

A bulldozer is laying soil on the grave of a man who passed away due to the coronavirus disease (COVID-19) during his burial at the new Wadi Al-Salam cemetery, which is dedicated to those who died of the coronavirus disease (COVID-19), on the outskirts of the holy city of Najaf, Iraq May, 21. 2020. Picture taken May, 21. 2020. REUTERS/Alaa al-Marjani

Members of the Popular Mobilization Forces (PMF), and Shiite students of al-Hawza al-Ilmiyya, who volunteered to work at the cemetery, wear protective suits as they pose for a group photo at the new Wadi Al-Salam cemetery, which is dedicated to those who died of coronavirus disease (COVID-19), on the outskirts of the holy city of Najaf, Iraq May 22, 2020. Picture taken May 22, 2020. REUTERS/Alaa al-Marjani

Abdelhussan Kadhim from the Popular Mobilization Forces (PMF), who volunteered to work at the cemetery, wears a protective suit as he poses at the new Wadi Al-Salam cemetery, which is dedicated to those who died of coronavirus disease (COVID-19), on the outskirts of the holy city of Najaf, Iraq May 22, 2020. Picture taken May 22, 2020. REUTERS/Alaa al-Marjani

A member of the Popular Mobilization Forces (PMF), who volunteered to work at the cemetery, wears a protective face mask as he takes a rest at the new Wadi Al-Salam cemetery, which is dedicated to those who died of coronavirus disease (COVID-19), on the outskirts of the holy city of Najaf, Iraq May 21, 2020. Picture taken May 21, 2020. REUTERS/Alaa al-Marjani

Members of the Popular Mobilization Forces (PMF), and a Shiite student of al-Hawza al-Ilmiyya, who volunteered to work at the cemetery, wear protective suits as they shroud the body of a man who passed away due to coronavirus disease (COVID-19) at the new Wadi Al-Salam cemetery, which is dedicated to those who died of coronavirus disease (COVID-19), on the outskirts of the holy city of Najaf, Iraq May 20, 2020. Picture taken May 20, 2020. REUTERS/Alaa al-Marjani

Abdelhussan Kadhim from the Popular Mobilization Forces (PMF), who volunteered to work at the cemetery, wears a protective suit as he stands next to fellow volunteers as they take a rest at the new Wadi Al-Salam cemetery, which is dedicated to those who died of coronavirus disease (COVID-19), on the outskirts of the holy city of Najaf, Iraq May 20, 2020. Picture taken May 20, 2020. REUTERS/Alaa al-Marjani

Abdelhussan Kadhim from the Popular Mobilization Forces (PMF), who volunteered to work at the cemetery, wears a protective suit as he is disinfected after the burial of a man who passed away due to coronavirus disease (COVID-19), at the new Wadi Al-Salam cemetery, which is dedicated to those who died of coronavirus disease (COVID-19), on the outskirts of the holy city of Najaf, Iraq May 20, 2020. Picture taken May 20, 2020. REUTERS/Alaa al-Marjani

Abdelhussan Kadhim, from the Popular Mobilization Forces (PMF), who volunteered to work in the cemetery, wearing a protective suit, poses for the camera at the new Wadi Al-Salam cemetery, which is dedicated to those who died of the coronavirus disease (COVID-19), on the outskirts of the holy city of Najaf, Iraq May, 25. 2020. Picture taken May, 25. 2020. REUTERS/Alaa al-Marjani

Abdelhussan Kadhim from the Popular Mobilization Forces (PMF), who volunteered to work at the cemetery, wears a protective suit as he reads a verse from the Koran near the coffin of a man who passed away due to coronavirus disease (COVID-19) during his burial at the new Wadi Al-Salam cemetery, which is dedicated to those who died of coronavirus disease (COVID-19), on the outskirts of the holy city of Najaf, Iraq May 20, 2020. Picture taken May 20, 2020. REUTERS/Alaa al-Marjani

Abdelhussan Kadhim from the Popular Mobilization Forces (PMF), who volunteered to work at the cemetery, wears a protective suit as he reads a verse from the Koran near the coffin of a man who passed away due to coronavirus disease (COVID-19) during his burial at the new Wadi Al-Salam cemetery, which is dedicated to those who died of coronavirus disease (COVID-19), on the outskirts of the holy city of Najaf, Iraq May 20, 2020. Picture taken May 20, 2020. REUTERS/Alaa al-Marjani

Abdelhussan Kadhim from the Popular Mobilization Forces (PMF), who volunteered to work at the cemetery, and fellow volunteers wearing protective suits, bury the coffin of a man who passed away due to coronavirus disease (COVID-19) at the new Wadi Al-Salam cemetery, which is dedicated to those who died of coronavirus disease (COVID-19), on the outskirts of the holy city of Najaf, Iraq May 20, 2020. Picture taken May 20, 2020. REUTERS/Alaa al-Marjani

Members of the Popular Mobilization Forces (PMF), who volunteered to work at the cemetery, carry the coffin of a man who passed away due to coronavirus disease (COVID-19) as they bury him at the new Wadi Al-Salam cemetery, which is dedicated to those who died of coronavirus disease (COVID-19), on the outskirts of the holy city of Najaf, Iraq May 20, 2020. Picture taken May 20, 2020. REUTERS/Alaa al-Marjani

An ambulance transports a man who passed away due to coronavirus disease (COVID-19), to bury him at the new Wadi Al-Salam cemetery, which is dedicated to those who died of coronavirus disease (COVID-19), on the outskirts of the holy city of Najaf, Iraq May 20, 2020. Picture taken May 20, 2020. REUTERS/Alaa al-Marjani

Members of the Popular Mobilization Forces (PMF), who volunteered to work at the cemetery, wear protective suits as they pray near the coffin of a man who passed away due to coronavirus disease (COVID-19) during his burial at the new Wadi Al-Salam cemetery, which is dedicated to those who died of coronavirus disease (COVID-19), on the outskirts of the holy city of Najaf, Iraq May 20, 2020. Picture taken May 20, 2020. REUTERS/Alaa al-Marjani

Abdelhussan Kadhim, from the Popular Mobilization Forces (PMF), who volunteered to work in the cemetery, wearing a protective suit (R), checks a name on a grave of a Christian man who passed away due to coronavirus disease (COVID-19) at the new Wadi Al-Salam cemetery, which is dedicated to those who died of the coronavirus disease (COVID-19), on the outskirts of the holy city of Najaf, Iraq May, 25. 2020. Picture taken May, 25. 2020. REUTERS/Alaa al-Marjani

Members of the Popular Mobilization Forces (PMF), who volunteered to work in the cemetery, wearing a protective suit, checks a grave before burial, at new Wadi Al-Salam cemetery, which is dedicated to those who died of the coronavirus disease (COVID-19), on the outskirts of the holy city of Najaf, Iraq, May, 25. 2020. Picture taken May, 25. 2020. REUTERS/Alaa al-Marjani

Members of the Popular Mobilization Forces (PMF), who volunteered to work in the cemetery, wearing protective suits, check a grave before burial, at new Wadi Al-Salam cemetery, which is dedicated to those who died of the coronavirus disease (COVID-19), on the outskirts of the holy city of Najaf, Iraq, May, 25. 2020. Picture taken May, 25. 2020. REUTERS/Alaa al-Marjani

Abdelhussan Kadhim, from the Popular Mobilization Forces (PMF), who volunteered to work in the cemetery, wears his protective suit and his boots, at new Wadi Al-Salam cemetery, which is dedicated to those who died of the coronavirus disease (COVID-19), on the outskirts of the holy city of Najaf, Iraq May, 25. 2020. Picture taken May, 25. 2020. REUTERS/Alaa al-Marjani

Members of the Popular Mobilization Forces (PMF), who volunteered to work in the cemetery, wear protective suits as they pray near the coffin of a man who passed away due to the coronavirus disease (COVID-19) during his burial at the new Wadi Al-Salam cemetery, which is dedicated to those who died of the coronavirus disease (COVID-19), on the outskirts of the holy city of Najaf, Iraq May, 20. 2020. Picture taken May, 20. 2020. REUTERS/Alaa al-Marjani

A member of the Popular Mobilization Forces (PMF), who volunteered to work in the cemetery, wears a protective face mask, as he takes a rest at the new Wadi Al-Salam cemetery, which is dedicated to those who died of the coronavirus disease (COVID-19), on the outskirts of the holy city of Najaf, Iraq May, 21. 2020. Picture taken May, 21. 2020. REUTERS/Alaa al-Marjani

Abdelhussan Kadhim, from the Popular Mobilization Forces (PMF), who volunteered to work in the cemetery, wearing a protective suit, reads a verse from the Koran near the coffin of a man who passed away due to the coronavirus disease (COVID-19), during his burial at the new Wadi Al-Salam cemetery, which is dedicated to those who died of the coronavirus disease (COVID-19), on the outskirts of the holy city of Najaf, Iraq May, 25. 2020. Picture taken May, 25. 2020. REUTERS/Alaa al-Marjani

A general view of deserted Al Rasheed street during a curfew imposed to prevent the spread of coronavirus disease (COVID-19), in Baghdad, Iraq May 31, 2020. REUTERS/Khalid al-Mousily

Closed shops are seen during a curfew imposed to prevent the spread of coronavirus disease (COVID-19), in Baghdad, Iraq May 31, 2020. REUTERS/Khalid al-Mousily

A Saudi airline employee wears a protective face shield as she talks to a passenger at Riyadh International Airport, after Saudi Arabia reopened domestic flights, following the outbreak of the coronavirus disease (COVID-19), in Riyadh, Saudi Arabia May 31, 2020. REUTERS/Ahmed Yosri

Passengers talk to airline employees at Riyadh International Airport, after Saudi Arabia reopened domestic flights, following the outbreak of the coronavirus disease (COVID-19), in Riyadh, Saudi Arabia May 31, 2020. REUTERS/Ahmed Yosri

Travellers wearing protective face masks walk at Riyadh International Airport, after Saudi Arabia reopened domestic flights, following the outbreak of the coronavirus disease (COVID-19), in Riyadh, Saudi Arabia May 31, 2020. REUTERS/Ahmed Yosri

A security man looks at a screen showing the body temperature of travellers, at Riyadh International Airport, after Saudi Arabia reopened domestic flights, following the outbreak of the coronavirus disease (COVID-19), in Riyadh, Saudi Arabia May 31, 2020. REUTERS/Ahmed Yosri

A traveller wearing a protective face mask wheels his bags at Riyadh International Airport, after Saudi Arabia reopened domestic flights, following the outbreak of the coronavirus disease (COVID-19), in Riyadh, Saudi Arabia May 31, 2020. REUTERS/Ahmed Yosri

Passengers wait to board their planes at Riyadh International Airport, after Saudi Arabia reopened domestic flights, following the outbreak of the coronavirus disease (COVID-19), in Riyadh, Saudi Arabia May 31, 2020. REUTERS/Ahmed Yosri

A woman follows social distancing markings at Riyadh International Airport, after Saudi Arabia reopened domestic flights, following the outbreak of the coronavirus disease (COVID-19), in Riyadh, Saudi Arabia May 31, 2020. REUTERS/Ahmed Yosri

A man wearing a protective mask kisses his wife before she travels at Riyadh International Airport, after Saudi Arabia reopened domestic flights, following the outbreak of the coronavirus disease (COVID-19), in Riyadh, Saudi Arabia May 31, 2020. REUTERS/Ahmed Yosri

A security woman checks the temperature of a woman at Riyadh International Airport, after Saudi Arabia reopened domestic flights, following the outbreak of the coronavirus disease (COVID-19), in Riyadh, Saudi Arabia May 31, 2020. REUTERS/Ahmed Yosri

A passenger wearing a protective face mask walks at Riyadh International Airport, after Saudi Arabia reopened domestic flights, following the outbreak of the coronavirus disease (COVID-19), in Riyadh, Saudi Arabia May 31, 2020. REUTERS/Ahmed Yosri

A passenger wearing a protective face mask walks at Riyadh International Airport, after Saudi Arabia reopened domestic flights, following the outbreak of the coronavirus disease (COVID-19), in Riyadh, Saudi Arabia May 31, 2020. REUTERS/Ahmed Yosri