A demonstrator lies unconscious after being injured during a protest against the $500 million U.S. infrastructure grant under the Millennium Challenge Corporation (MCC) near the parliament in Kathmandu, Nepal February 24, 2022. REUTERS/Navesh Chitrakar 

View of the entrance to the Emergency room of Memorial Hospital Marysville, after multiple people were reported unconscious at a nearby Hampton Inn, in Marysville, Ohio, U.S., January 29, 2022. REUTERS/Gaelen Morse 

View of the entrance to the Emergency room of Memorial Hospital Marysville, after multiple people were reported unconscious at a nearby Hampton Inn, in Marysville, Ohio, U.S., January 29, 2022. REUTERS/Gaelen Morse 

Hazmat crews respond to a mass casualty incident at a Hampton Inn, after multiple people were reported unconscious in the pool area, in Marysville, Ohio, U.S., January 29, 2022. REUTERS/Gaelen Morse 

Hazmat crews respond to a mass casualty incident at a Hampton Inn, after multiple people were reported unconscious in the pool area, in Marysville, Ohio, U.S., January 29, 2022. REUTERS/Gaelen Morse 

Hazmat crews respond to a mass casualty incident at a Hampton Inn, after multiple people were reported unconscious in the pool area, in Marysville, Ohio, U.S., January 29, 2022. REUTERS/Gaelen Morse 

Hazmat crews respond to a mass casualty incident at a Hampton Inn, after multiple people were reported unconscious in the pool area, in Marysville, Ohio, U.S., January 29, 2022. REUTERS/Gaelen Morse 

Hazmat crews respond to a mass casualty incident at a Hampton Inn, after multiple people were reported unconscious in the pool area, in Marysville, Ohio, U.S., January 29, 2022. REUTERS/Gaelen Morse 

Firefighters respond to a mass casualty incident at a Hampton Inn, after multiple people were reported unconscious in the pool area, in Marysville, Ohio, January 29, 2022. REUTERS/Gaelen Morse 

Firefighters respond to a mass casualty incident at a Hampton Inn, after multiple people were reported unconscious in the pool area, in Marysville, Ohio, January 29, 2022. REUTERS/Gaelen Morse 

Firefighters respond to a mass casualty incident at a Hampton Inn, after multiple people were reported unconscious in the pool area, in Marysville, Ohio, January 29, 2022. REUTERS/Gaelen Morse TPX IMAGES OF THE DAY 

Manisha Bashu presses the chest of her father, who was having difficulty breathing, after he felt unconscious while receiving oxygen support at a Gurudwara (Sikh temple) amidst the spread of coronavirus disease in Ghaziabad, India, April 30, 2021. REUTERS/Adnan Abidi Pulitzer Prize Winner for Feature Photography 

Manisha Bashu presses the chest of her father, who is suffering from breathing problem, after he felt unconscious while receiving oxygen support for free at a Gurudwara (Sikh temple), amidst the spread of coronavirus disease (COVID-19), in Ghaziabad, India, April 30, 2021. REUTERS/Adnan Abidi 

A woman crosses the tracks as an investigator (2-L) works at the scene of an incident following the death of a U.S. Embassy in Ukraine employee, who was found unconscious by railway tracks in a park in Kyiv October 1, 2020. REUTERS/Gleb Garanich 

An investigator works at the scene of an incident following the death of a U.S. Embassy in Ukraine employee, who was found unconscious by railway tracks in a park in Kyiv October 1, 2020. REUTERS/Gleb Garanich 

An investigator works next to two women, at the scene of an incident following the death of a U.S. Embassy in Ukraine employee, who was found unconscious by railway tracks in a park in Kyiv October 1, 2020. REUTERS/Gleb Garanich 

An investigator works at the scene of the incident following the death of a U.S. Embassy in Ukraine employee, who was found unconscious by railway tracks in a park in Kyiv October 1, 2020. REUTERS/Gleb Garanich 

An investigator works at the scene of the incident following the death of a U.S. Embassy in Ukraine employee, who was found unconscious by railway tracks in a park in Kyiv October 1, 2020. REUTERS/Gleb Garanich 

Forensic investigators are seen near the home of Melvin Theuma, who had been granted a presidential pardon to testify against the alleged mastermind behind the assassination of anti-corruption journalist Daphne Caruana Galizia, after he was found unconscious following what police called a suicide attempt, in Swieqi, Malta July 22, 2020. REUTERS/Darrin Zammit Lupi 

Forensic investigators and police officers stand near the home of Melvin Theuma, who had been granted a presidential pardon to testify against the alleged mastermind behind the assassination of anti-corruption journalist Daphne Caruana Galizia, after he was found unconscious following what police called a suicide attempt, in Swieqi, Malta July 22, 2020. REUTERS/Darrin Zammit Lupi 

Police cordon tape is seen near the home of Melvin Theuma, who had been granted a presidential pardon to testify against the alleged mastermind behind the assassination of anti-corruption journalist Daphne Caruana Galizia, after he was found unconscious following what police called a suicide attempt, in Swieqi, Malta July 22, 2020. REUTERS/Darrin Zammit Lupi 

Police officers stand near the home of Melvin Theuma, who had been granted a presidential pardon to testify against the alleged mastermind behind the assassination of anti-corruption journalist Daphne Caruana Galizia, after he was found unconscious following what police called a suicide attempt, in Swieqi, Malta July 22, 2020. REUTERS/Darrin Zammit Lupi 

Forensic investigators and police officers stand near the home of Melvin Theuma, who had been granted a presidential pardon to testify against the alleged mastermind behind the assassination of anti-corruption journalist Daphne Caruana Galizia, after he was found unconscious following what police called a suicide attempt, in Swieqi, Malta July 22, 2020. REUTERS/Darrin Zammit Lupi 

Forensic investigators are seen near the home of Melvin Theuma, who had been granted a presidential pardon to testify against the alleged mastermind behind the assassination of anti-corruption journalist Daphne Caruana Galizia, after he was found unconscious following what police called a suicide attempt, in Swieqi, Malta July 22, 2020. REUTERS/Darrin Zammit Lupi 

Police officers stand near the home of Melvin Theuma, who had been granted a presidential pardon to testify against the alleged mastermind behind the assassination of anti-corruption journalist Daphne Caruana Galizia, after he was found unconscious following what police called a suicide attempt, in Swieqi, Malta July 22, 2020. REUTERS/Darrin Zammit Lupi 

Forensic investigators are seen near the home of Melvin Theuma, who had been granted a presidential pardon to testify against the alleged mastermind behind the assassination of anti-corruption journalist Daphne Caruana Galizia, after he was found unconscious following what police called a suicide attempt, in Swieqi, Malta July 22, 2020. REUTERS/Darrin Zammit Lupi 

Forensic investigators are seen near the home of Melvin Theuma, who had been granted a presidential pardon to testify against the alleged mastermind behind the assassination of anti-corruption journalist Daphne Caruana Galizia, after he was found unconscious following what police called a suicide attempt, in Swieqi, Malta July 22, 2020. REUTERS/Darrin Zammit Lupi 

Forensic investigators are seen near the home of Melvin Theuma, who had been granted a presidential pardon to testify against the alleged mastermind behind the assassination of anti-corruption journalist Daphne Caruana Galizia, after he was found unconscious following what police called a suicide attempt, in Swieqi, Malta July 22, 2020. REUTERS/Darrin Zammit Lupi 

Forensic investigators are seen near the home of Melvin Theuma, who had been granted a presidential pardon to testify against the alleged mastermind behind the assassination of anti-corruption journalist Daphne Caruana Galizia, after he was found unconscious following what police called a suicide attempt, in Swieqi, Malta July 22, 2020. REUTERS/Darrin Zammit Lupi 

Police officers stand near the home of Melvin Theuma, who had been granted a presidential pardon to testify against the alleged mastermind behind the assassination of anti-corruption journalist Daphne Caruana Galizia, after he was found unconscious following what police called a suicide attempt, in Swieqi, Malta July 22, 2020. REUTERS/Darrin Zammit Lupi 

Police officers stand near the home of Melvin Theuma, who had been granted a presidential pardon to testify against the alleged mastermind behind the assassination of anti-corruption journalist Daphne Caruana Galizia, after he was found unconscious following what police called a suicide attempt, in Swieqi, Malta July 22, 2020. REUTERS/Darrin Zammit Lupi REFILE - CORRECTING NAME 

A police vehicle is seen near the home of Melvin Theuma, who had been granted a presidential pardon to testify against the alleged mastermind behind the assassination of anti-corruption journalist Daphne Caruana Galizia, after he was found unconscious following what police called a suicide attempt, in Swieqi, Malta July 22, 2020. REUTERS/Darrin Zammit Lupi REFILE - CORRECTING NAME 

Police officers stand near the home of Melvin Theuma, who had been granted a presidential pardon to testify against the alleged mastermind behind the assassination of anti-corruption journalist Daphne Caruana Galizia, after he was found unconscious following what police called a suicide attempt, in Swieqi, Malta July 22, 2020. REUTERS/Darrin Zammit Lupi REFILE - CORRECTING NAME 

A police officer is seen near the home of Melvin Theuma, who had been granted a presidential pardon to testify against the alleged mastermind behind the assassination of anti-corruption journalist Daphne Caruana Galizia, after he was found unconscious following what police called a suicide attempt, in Swieqi, Malta July 22, 2020. REUTERS/Darrin Zammit Lupi REFILE - CORRECTING NAME 

Ambulance and air ambulance crews work to stabilise a patient with possible the coronavirus disease (COVID-19) symptoms, who was found unconscious having suffered a cardiac arrest while cycling in Botley near Southampton, May 06, 2020. Picture taken May 6, 2020. Leon Neal/Pool via REUTERS 

Ambulance and air ambulance crews work to stabilise a patient with possible COVID-19 symptoms who was found unconscious having suffered a cardiac arrest while cycling in Botley, near Southampton, Britain May 6, 2020. Picture taken May 6, 2020. Leon Neal/Pool via REUTERS 

Ambulance and air ambulance crews work to stabilise a patient with possible COVID-19 symptoms who was found unconscious having suffered a cardiac arrest while cycling in Botley, near Southampton, Britain May 6, 2020. Picture taken May 6, 2020. Leon Neal/Pool via REUTERS 

Ambulance and air ambulance crews work to stabilise a patient with possible COVID-19 symptoms who was found unconscious having suffered a cardiac arrest while cycling in Botley, near Southampton, Britain May 6, 2020. Picture taken May 6, 2020. Leon Neal/Pool via REUTERS 

Ambulance and air ambulance crews work to stabilise a patient with possible COVID-19 symptoms who was found unconscious having suffered a cardiac arrest while cycling in Botley, near Southampton, Britain May 6, 2020. Picture taken May 6, 2020. Leon Neal/Pool via REUTERS 

Ambulance and air ambulance crews work to stabilise a patient with possible coronavirus disease (COVID-19) symptoms, who was found unconscious having suffered a cardiac arrest while cycling in Botley near Southampton, May 06, 2020. Picture taken May 6, 2020. Leon Neal/Pool via REUTERS 

Ambulance and air ambulance crews work to stabilise a patient with possible coronavirus disease (COVID-19) symptoms, who was found unconscious having suffered a cardiac arrest while cycling in Botley near Southampton, May 06, 2020. Picture taken May 6, 2020. Leon Neal/Pool via REUTERS 

Ambulance and air ambulance crews work to stabilise a patient with possible coronavirus disease (COVID-19) symptoms, who was found unconscious having suffered a cardiac arrest while cycling in Botley near Southampton, May 06, 2020. Picture taken May 6, 2020. Leon Neal/Pool via REUTERS 

Protesters building barricades from white boxes in Sai Wan Ho area where a boy was allegedly shot and left unconscious this morning in Hong Kong, China November 11, 2019. REUTERS/Jiraporn Kuhakan 

An exterior view of the Metropolitan Correctional Center jail where financier Jeffrey Epstein, who was found unconscious with injuries to his neck according multiple media outlets citing unidentified sources while awaiting trial in his sex trafficking case in the Manhattan borough of New York City, New York, U.S., July 25, 2019. REUTERS/Brendan McDermid 

An exterior view of the Metropolitan Correctional Center jail where financier Jeffrey Epstein, who was found unconscious with injuries to his neck according multiple media outlets citing unidentified sources while awaiting trial in his sex trafficking case in the Manhattan borough of New York City, New York, U.S., July 25, 2019. REUTERS/Brendan McDermid 

An exterior view of the Metropolitan Correctional Center jail where financier Jeffrey Epstein, who was found unconscious with injuries to his neck according multiple media outlets citing unidentified sources while awaiting trial in his sex trafficking case in the Manhattan borough of New York City, New York, U.S., July 25, 2019. REUTERS/Brendan McDermid 

An exterior view of the Metropolitan Correctional Center jail where financier Jeffrey Epstein, who was found unconscious with injuries to his neck according multiple media outlets citing unidentified sources while awaiting trial in his sex trafficking case in the Manhattan borough of New York City, New York, U.S., July 25, 2019. REUTERS/Brendan McDermid 

An exterior view of the Metropolitan Correctional Center jail where financier Jeffrey Epstein, who was found unconscious with injuries to his neck according multiple media outlets citing unidentified sources while awaiting trial in his sex trafficking case in the Manhattan borough of New York City, New York, U.S., July 25, 2019. REUTERS/Brendan McDermid 

An exterior view of the Metropolitan Correctional Center jail where financier Jeffrey Epstein, who was found unconscious with injuries to his neck according multiple media outlets citing unidentified sources while awaiting trial in his sex trafficking case in the Manhattan borough of New York City, New York, U.S., July 25, 2019. REUTERS/Brendan McDermid 

An exterior view of the Metropolitan Correctional Center jail where financier Jeffrey Epstein, who was found unconscious with injuries to his neck according multiple media outlets citing unidentified sources while awaiting trial in his sex trafficking case in the Manhattan borough of New York City, New York, U.S., July 25, 2019. REUTERS/Brendan McDermid 

An unconscious migrant, part of a caravan traveling en route to the United States, is carried out of a truck by first responders, near Sayula de Aleman, Mexico November 11, 2018. REUTERS/Carlos Garcia Rawlins 

Relatives of the 12 boys and their soccer coach trapped in the Tham Luang cave complex listen to a news conference about the death of a Thai rescue diver after he fell unconscious during part of an operation, near the cave complex in the northern province of Chiang Rai, Thailand, July 6, 2018. REUTERS/Athit Perawongmetha 

A relative of the 12 boys and their soccer coach trapped in the Tham Luang cave complex listens to a news conference about the death of a Thai rescue diver after he fell unconscious during part of an operation, near the cave complex in the northern province of Chiang Rai, Thailand, July 6, 2018. REUTERS/Athit Perawongmetha 

A relative of the 12 boys and their soccer coach trapped in the Tham Luang cave complex listens to a news conference about the death of a Thai rescue diver after he fell unconscious during part of an operation, near the cave complex in the northern province of Chiang Rai, Thailand, July 6, 2018. REUTERS/Athit Perawongmetha 

A relative of the 12 boys and their soccer coach trapped in the Tham Luang cave complex cries while listening to a news conference about the death of a Thai rescue diver after he fell unconscious during part of an operation, near the cave complex in the northern province of Chiang Rai, Thailand, July 6, 2018. REUTERS/Athit Perawongmetha 

Relatives of the 12 boys and their soccer coach trapped in the Tham Luang cave complex listen to a news conference about the death of a Thai rescue diver after he fell unconscious during part of an operation, near the cave complex in the northern province of Chiang Rai, Thailand, July 6, 2018. REUTERS/Athit Perawongmetha 

A relative of the 12 boys and their soccer coach trapped in the Tham Luang cave complex listens to a news conference about the death of a Thai rescue diver after he fell unconscious during part of an operation, near the cave complex in the northern province of Chiang Rai, Thailand, July 6, 2018. REUTERS/Athit Perawongmetha 

Members of the media attend a news conference about the death of a Thai rescue diver after he fell unconscious during part of an operation, in front of the Tham Luang cave complex, where 12 boys and their soccer coach are trapped, in the northern province of Chiang Rai, Thailand, July 6, 2018. REUTERS/Athit Perawongmetha