A healthworker registers a boy who has tested positive for the coronavirus disease (COVID-19) before he is sent to a hospital, in Bangkok, Thailand May 17, 2021. REUTERS/Soe Zeya Tun

A man who has tested positive for the coronavirus disease (COVID-19) sits in a bus as he is sent to a hospital, in Bangkok, Thailand May 17, 2021. REUTERS/Soe Zeya Tun

A healthworker passes his time during a coronavirus disease (COVID-19) outbreak, in Bangkok, Thailand May 17, 2021. REUTERS/Soe Zeya Tun

A woman who has tested positive for the coronavirus disease (COVID-19) walks towards a bus as she is sent to a hospital, in Bangkok, Thailand May 17, 2021. REUTERS/Soe Zeya Tun

A woman who has tested positive for the coronavirus disease (COVID-19) walks towards a bus as she is sent to a hospital, in Bangkok, Thailand May 17, 2021. REUTERS/Soe Zeya Tun

A woman's face is reflected in a mirror as people who have tested positive for the coronavirus disease (COVID-19) wait for paperwork to be processed by authorities before they are sent to a hospital, in Bangkok, Thailand May 17, 2021. REUTERS/Soe Zeya Tun

A man stands outside his apartment as people who have tested positive for the coronavirus disease (COVID-19) wait for paperwork to be processed by authorities before they are sent to a hospital, in Bangkok, Thailand May 17, 2021. REUTERS/Soe Zeya Tun

Empty beds are seen inside a field hospital, recently set up to fight the spread of the coronavirus disease (COVID-19), at Bangkok Arena in Nonthaburi province, on the outskirts of Bangkok, Thailand May 14, 2021. REUTERS/Chalinee Thirasupa

Empty beds are seen inside a field hospital, recently set up to fight the spread of the coronavirus disease (COVID-19), at Bangkok Arena in Nonthaburi province, on the outskirts of Bangkok, Thailand May 14, 2021. REUTERS/Chalinee Thirasupa

An ICU nurse wearing personal protection equipment (PPE) treats a patient suffering from the coronavirus disease (COVID-19) in the Intensive Care Unit (ICU) at the King Chulalongkorn Memorial Hospital in Bangkok, Thailand, May 12, 2021. Picture taken May 12, 2021. REUTERS/Athit Perawongmetha TPX IMAGES OF THE DAY

A doctor and an ICU nurse wearing personal protection equipment (PPE) treat patients suffering from the coronavirus disease (COVID-19) in the Intensive Care Unit (ICU) at the King Chulalongkorn Memorial Hospital in Bangkok, Thailand, May 12, 2021. Picture taken May 12, 2021. REUTERS/Athit Perawongmetha

A doctor wearing personal protection equipment (PPE) treats a patient suffering from the coronavirus disease (COVID-19) in the Intensive Care Unit (ICU) at the King Chulalongkorn Memorial Hospital in Bangkok, Thailand, May 12, 2021. Picture taken May 12, 2021. REUTERS/Athit Perawongmetha

A doctor and ICU nurses wearing personal protection equipment (PPE) treat a patient suffering from the coronavirus disease (COVID-19) in the Intensive Care Unit (ICU) at the King Chulalongkorn Memorial Hospital in Bangkok, Thailand, May 12, 2021. Picture taken May 12, 2021. REUTERS/Athit Perawongmetha

Doctors and ICU nurses wearing personal protection equipment (PPE) treat a patient suffering from the coronavirus disease (COVID-19) in the Intensive Care Unit (ICU) at the King Chulalongkorn Memorial Hospital in Bangkok, Thailand, May 12, 2021. Picture taken May 12, 2021. REUTERS/Athit Perawongmetha

A doctor and ICU nurses wearing personal protection equipment (PPE) treat a patient suffering from the coronavirus disease (COVID-19) in the Intensive Care Unit (ICU) at the King Chulalongkorn Memorial Hospital in Bangkok, Thailand, May 12, 2021. Picture taken May 12, 2021. REUTERS/Athit Perawongmetha

ICU nurses wearing personal protection equipment (PPE) treat a patient suffering from the coronavirus disease (COVID-19) in the Intensive Care Unit (ICU) at the King Chulalongkorn Memorial Hospital in Bangkok, Thailand, May 12, 2021. Picture taken May 12, 2021. REUTERS/Athit Perawongmetha

Paul Risley, a U.S. citizen chair of Democrats Abroad, poses during an interview with Reuters in Bangkok, Thailand May 11, 2021. Picture taken May 11, 2021. REUTERS/Jiraporn Kuhakan

Peter Fischbach, a U.S. citizen member of Democrats Abroad, poses during an interview with Reuters in Bangkok, Thailand May 11, 2021. Picture taken May 11, 2021. REUTERS/Jiraporn Kuhakan

Paul Risley, a U.S. citizen chair of Democrats Abroad, walks with his son during an interview with Reuters in Bangkok, Thailand May 11, 2021. Picture taken May 11, 2021. REUTERS/Jiraporn Kuhakan

Peter Fischbach, a U.S. citizen member of Democrats Abroad, poses during an interview with Reuters in Bangkok, Thailand May 11, 2021. Picture taken May 11, 2021. REUTERS/Jiraporn Kuhakan

A doctor and nurses receive help from colleagues to put on their personal protective equipment (PPE) before attending to a coronavirus disease (COVID-19) patient in the Emerging Infectious Disease Clinic Intensive Care Unit at King Chulalongkorn Memorial Hospital in Bangkok, Thailand, May 11, 2021. Picture taken May 11, 2021. REUTERS/Athit Perawongmetha

A doctor and ICU nurses wearing personal protection equipment (PPE) treat a patient suffering from the coronavirus disease (COVID-19) in the Intensive Care Unit (ICU) at the King Chulalongkorn Memorial Hospital in Bangkok, Thailand, May 11, 2021. Picture taken May 11, 2021. REUTERS/Athit Perawongmetha

An ICU nurse wearing personal protection equipment (PPE) attends to a patient suffering from the coronavirus disease (COVID-19) in the Intensive Care Unit (ICU) at the King Chulalongkorn Memorial Hospital in Bangkok, Thailand, May 11, 2021. Picture taken May 11, 2021. REUTERS/Athit Perawongmetha

A doctor takes off her personal protection equipment (PPE) after treating a patient suffering from the coronavirus disease (COVID-19) in the Intensive Care Unit (ICU) at the King Chulalongkorn Memorial Hospital in Bangkok, Thailand, May 11, 2021. Picture taken May 11, 2021. REUTERS/Athit Perawongmetha TPX IMAGES OF THE DAY

An ICU nurse wearing a face mask works and monitors the live footages of patients suffering from the coronavirus disease (COVID-19) in the Intensive Care Unit (ICU) at the King Chulalongkorn Memorial Hospital in Bangkok, Thailand, May 11, 2021. Picture taken May 11, 2021. REUTERS/Athit Perawongmetha

ICU nurses wearing face masks work and monitor the live footages of patients suffering from the coronavirus disease (COVID-19) in the Intensive Care Unit (ICU) at the King Chulalongkorn Memorial Hospital in Bangkok, Thailand, May 11, 2021. Picture taken May 11, 2021. REUTERS/Athit Perawongmetha

A patient suffering from the coronavirus disease (COVID-19) connected to a ventilator tube in the Intensive Care Unit (ICU) is seen at the King Chulalongkorn Memorial Hospital in Bangkok, Thailand, May 11, 2021. Picture taken May 11, 2021. REUTERS/Athit Perawongmetha

An ICU nurse wearing personal protection equipment (PPE) uses a mobile x-ray machine as she treats a patient suffering from the coronavirus disease (COVID-19) in the Intensive Care Unit (ICU) at the King Chulalongkorn Memorial Hospital in Bangkok, Thailand, May 11, 2021. Picture taken May 11, 2021. REUTERS/Athit Perawongmetha

A doctor and an ICU nurse wearing personal protection equipment (PPE) treat a patient suffering from the coronavirus disease (COVID-19) in the Intensive Care Unit (ICU) at the King Chulalongkorn Memorial Hospital in Bangkok, Thailand, May 11, 2021. Picture taken May 11, 2021. REUTERS/Athit Perawongmetha

An ICU nurse wearing personal protection equipment (PPE) treats a patient suffering from the coronavirus disease (COVID-19) in the Intensive Care Unit (ICU) at the King Chulalongkorn Memorial Hospital in Bangkok, Thailand, May 11, 2021. Picture taken May 11, 2021. REUTERS/Athit Perawongmetha

A patient suffering from the coronavirus disease (COVID-19) in the Intensive Care Unit (ICU) is seen at the King Chulalongkorn Memorial Hospital in Bangkok, Thailand, May 11, 2021. Picture taken May 11, 2021. REUTERS/Athit Perawongmetha

A man shows the three-finger salute as he waits for a bus outside Klongprem Central Prison while anti-government protest leaders arrested and charged with lese majeste, are released in Bangkok, Thailand May 11, 2021. REUTERS/Jorge Silva

An ambulance transporting Parit "Penguin" Chiwarak is seen as he is released, outside Klongprem Central Prison in Bangkok, Thailand May 11, 2021. REUTERS/Soe Zeya Tun

Parit "Penguin" Chiwarak shows a three-finger salute from an ambulance as he is released, outside Klongprem Central Prison in Bangkok, Thailand May 11, 2021. REUTERS/Soe Zeya Tun

Parit "Penguin" Chiwarak shows a three-finger salute from an ambulance as he is released, outside Klongprem Central Prison in Bangkok, Thailand May 11, 2021. REUTERS/Soe Zeya Tun

Supporters of anti-government protest leaders arrested and charged with lese majeste, show the three-finger salute next to members of the media during the release in Bangkok, Thailand May 11, 2021. REUTERS/Soe Zeya Tun

Parit "Penguin" Chiwarak shows a three-finger salute from an ambulance as he is released, outside Klongprem Central Prison in Bangkok, Thailand May 11, 2021. REUTERS/Jorge Silva

Parit "Penguin" Chiwarak shows a three-finger salute from an ambulance as he is released, outside Klongprem Central Prison in Bangkok, Thailand May 11, 2021. REUTERS/Jorge Silva TPX IMAGES OF THE DAY

Chaiamorn "Ammy" Kaewwiboonpan shows a three-finger salute from a car as he is released, outside Klongprem Central Prison in Bangkok, Thailand May 11, 2021. REUTERS/Soe Zeya Tun

Supporters of anti-government protest leaders arrested and charged with lese majeste, and members of the media gather around a car during the release in Bangkok, Thailand May 11, 2021. REUTERS/Jorge Silva

Chaiamorn "Ammy" Kaewwiboonpan shows a three-finger salute from a car as he is released, outside Klongprem Central Prison in Bangkok, Thailand May 11, 2021. REUTERS/Jorge Silva

Chaiamorn "Ammy" Kaewwiboonpan shows a three-finger salute from a car as he is released, outside Klongprem Central Prison in Bangkok, Thailand May 11, 2021. REUTERS/Jorge Silva

Chaiamorn "Ammy" Kaewwiboonpan shows a three-finger salute from a car as he is released, outside Klongprem Central Prison in Bangkok, Thailand May 11, 2021. REUTERS/Soe Zeya Tun

Chaiamorn "Ammy" Kaewwiboonpan shows a three-finger salute from a car as he is released, outside Klongprem Central Prison in Bangkok, Thailand May 11, 2021. REUTERS/Soe Zeya Tun

Panusaya "Rung" Sithijirawattanaku waits for the release of her fellow anti-government protesters, arrested and charged with lese majeste, outside Klongprem Central Prison in Bangkok, Thailand May 11, 2021. REUTERS/Soe Zeya Tun

A supporter of anti-government protest leaders arrested and charged with lese majeste for insulting Thailand's King displays a sign that reads 'Scale from hell' while waiting for their release on bail outside Klongprem Central Prison in Bangkok, Thailand May 11, 2021. REUTERS/Jorge Silva

Panusaya "Rung" Sithijirawattanaku waits for the release of her fellow anti-government protesters, arrested and charged with lese majeste, outside Klongprem Central Prison in Bangkok, Thailand May 11, 2021. REUTERS/Soe Zeya Tun

A supporter of anti-government protest leaders arrested and charged with lese majeste looks at her phone while waiting for their release on bail outside Klongprem Central Prisonin Bangkok, Thailand May 11, 2021. REUTERS/Soe Zeya Tun

Supporters of anti-government protest leaders arrested and charged with lese majeste show a three-finger salute while waiting for their release in Bangkok, Thailand May 11, 2021. REUTERS/Soe Zeya Tun

A person in costume stands at the side of a road during a gathering of the supporters of anti-government protest leaders arrested and charged with lese majeste, waiting for their release in Bangkok, Thailand May 11, 2021. REUTERS/Jorge Silva TPX IMAGES OF THE DAY

A supporter of anti-government protest leaders arrested and charged with lese majeste for insulting Thailand's King shows a three-finger salute while waiting for their release on bail outside Klongprem Central Prison in Bangkok, Thailand May 11, 2021. REUTERS/Jorge Silva

Supporters of anti-government protest leaders arrested and charged with lese majeste for insulting Thailand's King show a three-finger salute while waiting for their release on bail outside Klongprem Central Prison in Bangkok, Thailand May 11, 2021. REUTERS/Jorge Silva

A view of Klongprem Central Prison during a gathering of the supporters of anti-government protest leaders arrested and charged with lese majeste, waiting for their release in Bangkok, Thailand May 11, 2021. REUTERS/Jorge Silva

A supporter of anti-government protest leaders arrested and charged with lese majeste for insulting Thailand's King waits for their release on bail outside Klongprem Central Prison in Bangkok, Thailand May 11, 2021. REUTERS/Jorge Silva

An airplane flies as the moon is seen in the sky, in the early morning, in Bangkok, Thailand May 9, 2021. REUTERS/Soe Zeya Tun

Protest leader Panusaya "Rung" Sithijirawattanakul, who has spent eight weeks in detention on charges of insulting the country's king, hugs her friend as she leaves after she was granted bail at the Central Women's Correctional Institute in Bangkok, Thailand, May 6, 2021. REUTERS/Athit Perawongmetha

Protest leader Panusaya "Rung" Sithijirawattanakul, who has spent eight weeks in detention on charges of insulting the country's king, leaves after she was granted bail at the Central Women's Correctional Institute in Bangkok, Thailand, May 6, 2021. REUTERS/Athit Perawongmetha

Protest leader Panusaya "Rung" Sithijirawattanakul shows the three-finger salute as she has been granted bail by a court after being detained under lese majeste charges in Bangkok, Thailand May 6, 2021. REUTERS/Soe Zeya Tun

Protest leader Panusaya "Rung" Sithijirawattanakul, who has spent eight weeks in detention on charges of insulting the country's king, meets her sister as she leaves after she was granted bail at the Central Women's Correctional Institute in Bangkok, Thailand, May 6, 2021. REUTERS/Athit Perawongmetha

A supporter holds a tablet displaying protest leader Panusaya "Rung" Sithijirawattanakul as she has been granted bail by a court after being detained under lese majeste charges in Bangkok, Thailand May 6, 2021. REUTERS/Soe Zeya Tun