Medical personnel attend a training session on dengue in a mobile hospital set by the local government as hospitals are overcrowded due to a dengue outbreak, in Santa Cruz de la Sierra, Bolivia, February 23, 2023. REUTERS/Andrea Martinez 

A view shows a mobile hospital set by the local government as hospitals are overcrowded due to a dengue outbreak, in Santa Cruz de la Sierra, Bolivia, February 23, 2023. REUTERS/Andrea Martinez 

A nurse listens to a man with dengue symptoms in a mobile hospital set by the local government as hospitals are overcrowded due to a dengue outbreak, in Santa Cruz de la Sierra, Bolivia, February 23, 2023. REUTERS/Andrea Martinez 

A nurse measures the pressure of a man with dengue symptoms in a mobile hospital set by the local government as hospitals are overcrowded due to a dengue outbreak, in Santa Cruz de la Sierra, Bolivia, February 23, 2023. REUTERS/Andrea Martinez 

A doctor conducts a training session on dengue in a mobile hospital set by the local government as hospitals are overcrowded due to a dengue outbreak, in Santa Cruz de la Sierra, Bolivia, February 23, 2023. REUTERS/Andrea Martinez 

A nurse listens to a man with dengue symptoms in a mobile hospital set by the local government as hospitals are overcrowded due to a dengue outbreak, in Santa Cruz de la Sierra, Bolivia, February 23, 2023. REUTERS/Andrea Martinez 

A patient lies on a stretcher in a mobile hospital set by the local government as hospitals are overcrowded due to a dengue outbreak, in Santa Cruz de la Sierra, Bolivia, February 23, 2023. REUTERS/Andrea Martinez 

Nurses talk to a patient at a mobile hospital set by the local government as hospitals are overcrowded due to a dengue outbreak, in Santa Cruz de la Sierra, Bolivia, February 23, 2023. REUTERS/Andrea Martinez 

Commuters travel in an overcrowded train near a railway station in Ghaziabad, on the outskirts of New Delhi, India, February 1, 2023. REUTERS/Anushree Fadnavis TPX IMAGES OF THE DAY 

Commuters rush to catch an overcrowded train near a railway station in Ghaziabad, on the outskirts of New Delhi, India, February 1, 2023. REUTERS/Anushree Fadnavis 

South Sudanese detainees and prisoners are processed from the overcrowded Juba Central prison after they were released from the facility in Juba, South Sudan January 20, 2023. REUTERS/Jok Solomun 

South Sudanese detainees and prisoners walk from the overcrowded Juba Central prison after they were released from the facility in Juba, South Sudan January 20, 2023. REUTERS/Jok Solomun 

South Sudanese detainees and prisoners walk from the overcrowded Juba Central prison after they were released from the facility in Juba, South Sudan January 20, 2023. REUTERS/Jok Solomun 

South Sudanese detainees and prisoners walk from the overcrowded Juba Central prison after they were released from the facility in Juba, South Sudan January 20, 2023. REUTERS/Jok Solomun 

South Sudanese detainees and prisoners walk from the overcrowded Juba Central prison after they were released from the facility in Juba, South Sudan January 20, 2023. REUTERS/Jok Solomun 

South Sudanese detainees and prisoners walk from the overcrowded Juba Central prison after they were released from the facility in Juba, South Sudan January 20, 2023. REUTERS/Jok Solomun 

Devotees climb on the rooftop of an overcrowded train to return home, after attending the final prayer of Bishwa Ijtema, which is considered the world’s second-largest Muslim gathering after Haj, in Tongi, outskirts of Dhaka, Bangladesh, January 15, 2023. REUTERS/Mohammad Ponir Hossain 

Devotees climb on the rooftop of an overcrowded train to return home, after attending the final prayer of Bishwa Ijtema, which is considered the world?s second-largest Muslim gathering after Haj, in Tongi, outskirts of Dhaka, Bangladesh, January 15, 2023. REUTERS/Mohammad Ponir Hossain 

People jump between trains as Muslim devotees travel on the rooftop of overcrowded trains to return home, after attending the final prayer of Bishwa Ijtema, which is considered the world’s second-largest Muslim gathering after Haj, in Tongi, outskirts of Dhaka, Bangladesh, January 15, 2023. REUTERS/Mohammad Ponir Hossain 

People jump between trains as Muslim devotees travel on the rooftops of overcrowded trains to return home, after attending the final prayer of Bishwa Ijtema, which is considered the world’s second-largest Muslim gathering after Haj, in Tongi, outskirts of Dhaka, Bangladesh, January 15, 2023. REUTERS/Mohammad Ponir Hossain TPX IMAGES OF THE DAY 

Devotees climb on the rooftop of an overcrowded train to return home, after attending the final prayer of Bishwa Ijtema, which is considered the world?s second-largest Muslim gathering after Haj, in Tongi, outskirts of Dhaka, Bangladesh, January 15, 2023. REUTERS/Mohammad Ponir Hossain 

Devotees climb on the rooftop of an overcrowded train to return home, after attending the final prayer of Bishwa Ijtema, which is considered the world?s second-largest Muslim gathering after Haj, in Tongi, outskirts of Dhaka, Bangladesh, January 15, 2023. REUTERS/Mohammad Ponir Hossain 

Devotees climb on the rooftop of an overcrowded train to return home, after attending the final prayer of Bishwa Ijtema, which is considered the world’s second-largest Muslim gathering after Haj, in Tongi, outskirts of Dhaka, Bangladesh, January 15, 2023. REUTERS/Mohammad Ponir Hossain 

Devotees climb on the rooftop of an overcrowded train to return home, after attending the final prayer of Bishwa Ijtema, which is considered the world?s second-largest Muslim gathering after Haj, in Tongi, outskirts of Dhaka, Bangladesh, January 15, 2023. REUTERS/Mohammad Ponir Hossain 

An employee of Israeli startup AIR sits in a prototype of AIR ONE, an electric vehicle designed to fly commuters on short trips far above streets overcrowded with cars in Beersheba, Israel December 18, 2022. REUTERS/Amir Cohen 

An employee of Israeli startup AIR, sits in a prototype of AIR ONE, an electric vehicle designed to fly commuters on short trips far above streets overcrowded with cars in Beersheba, Israel December 18, 2022. REUTERS/Amir Cohen 

Chen Rosen, AIR CTO and co-founder, Rani Plaut, AIR CEO and co-founder and Netanel Goldberg AIR COO and co-founder pose for a photograph in front of a prototype of AIR ONE, an electric vehicle designed to fly commuters on short trips far above streets overcrowded with cars in Beersheba, Israel December 18, 2022. REUTERS/Amir Cohen 

A prototype of AIR ONE, an electric vehicle developed by Israeli startup AIR and designed to fly commuters on short trips far above streets overcrowded with cars, flies untethered during a flight test in Beersheba, Israel December 18, 2022. REUTERS/Amir Cohen 

Employees of Israeli startup AIR check a prototype of AIR ONE, an electric vehicle designed to fly commuters on short trips far above streets overcrowded with cars in Beersheba, Israel December 18, 2022. REUTERS/Amir Cohen 

A prototype of AIR ONE, an electric vehicle developed by Israeli startup AIR and designed to fly commuters on short trips far above streets overcrowded with cars, flies untethered during a flight test above Beersheba, Israel December 18, 2022. REUTERS/Amir Cohen 

A prototype of AIR ONE, an electric vehicle developed by Israeli startup AIR and designed to fly commuters on short trips far above streets overcrowded with cars, flies untethered during a flight test above Beersheba, Israel December 18, 2022. REUTERS/Amir Cohen 

Employees of Israeli startup AIR work on a prototype of AIR ONE, an electric vehicle designed to fly commuters on short trips far above streets overcrowded with cars in Beersheba, Israel December 18, 2022. REUTERS/Amir Cohen 

An employee of Israeli startup AIR sits in a prototype of AIR ONE, an electric vehicle designed to fly commuters on short trips far above streets overcrowded with cars in Beersheba, Israel December 18, 2022. REUTERS/Amir Cohen 

An employee of Israeli startup AIR work on a prototype of AIR ONE, an electric vehicle designed to fly commuters on short trips far above streets overcrowded with cars in Beersheba, Israel December 18, 2022. REUTERS/Amir Cohen 

People react at a scene of crime following the declaration of a state of emergency and a curfew by the Ecuador's government in Guayas and Esmeraldas provinces, after several police officers were killed in attacks in response to prisoner transfers from overcrowded prisons, in Guayaquil, Ecuador November 1, 2022. REUTERS/Santiago Arcos 

People react at a scene of crime following the declaration of a state of emergency and a curfew by the Ecuador's government in Guayas and Esmeraldas provinces, after several police officers were killed in attacks in response to prisoner transfers from overcrowded prisons, in Guayaquil, Ecuador November 1, 2022. REUTERS/Santiago Arcos 

A person takes a picture as police officers investigate a scene of crime following the declaration of a state of emergency and a curfew by the Ecuador's government in Guayas and Esmeraldas provinces, after several police officers were killed in attacks in response to prisoner transfers from overcrowded prisons, in Guayaquil, Ecuador November 1, 2022. REUTERS/Santiago Arcos 

People react at a scene of crime following the declaration of a state of emergency and a curfew by the Ecuador's government in Guayas and Esmeraldas provinces, after several police officers were killed in attacks in response to prisoner transfers from overcrowded prisons, in Guayaquil, Ecuador November 1, 2022. REUTERS/Santiago Arcos 

People react at a scene of crime following the declaration of a state of emergency and a curfew by the Ecuador's government in Guayas and Esmeraldas provinces, after several police officers were killed in attacks in response to prisoner transfers from overcrowded prisons, in Guayaquil, Ecuador November 1, 2022. REUTERS/Santiago Arcos 

People react at a scene of crime following the declaration of a state of emergency and a curfew by the Ecuador's government in Guayas and Esmeraldas provinces, after several police officers were killed in attacks in response to prisoner transfers from overcrowded prisons, in Guayaquil, Ecuador November 1, 2022. REUTERS/Santiago Arcos 

Police officers investigate a scene of crime following the declaration of a state of emergency and a curfew by the Ecuador's government in Guayas and Esmeraldas provinces, after several police officers were killed in explosive attacks in response to prisoner transfers from overcrowded prisons, in Guayaquil, Ecuador November 1, 2022. REUTERS/Santiago Arcos 

A police officer puts up a police tape at a crime scene where colleagues were killed in response to prisoner transfers from overcrowded prisons, prompting President Guillermo Lasso to declare a state of emergency in two provinces, in Guayaquil, Ecuador November 1, 2022. REUTERS/Santiago Arcos 

Police officers cover a crime scene where colleagues were killed in response to prisoner transfers from overcrowded prisons, prompting President Guillermo Lasso to declare a state of emergency in two provinces, in Guayaquil, Ecuador November 1, 2022. REUTERS/Santiago Arcos 

Police officers stand guard near a bullet-riddled police car at a crime scene where colleagues were killed in response to prisoner transfers from overcrowded prisons, prompting President Guillermo Lasso to declare a state of emergency in two provinces, in Guayaquil, Ecuador November 1, 2022. REUTERS/Santiago Arcos 

A police officer stands guard at a crime scene where police officers were killed in response to prisoner transfers from overcrowded prisons, prompting President Guillermo Lasso to declare a state of emergency in two provinces, in Guayaquil, Ecuador November 1, 2022. REUTERS/Santiago Arcos 

Police officers stand at a crime scene where police officers were killed in response to prisoner transfers from overcrowded prisons, prompting President Guillermo Lasso to declare a state of emergency in two provinces, in Guayaquil, Ecuador November 1, 2022. REUTERS/Santiago Arcos 

A police officer stands guard at a crime scene where police officers were killed in response to prisoner transfers from overcrowded prisons, prompting President Guillermo Lasso to declare a state of emergency in two provinces, in Guayaquil, Ecuador November 1, 2022. REUTERS/Santiago Arcos 

Police officers inspect a car for explosives after police officers were killed in explosive attacks in response to prisoner transfers from overcrowded prisons, prompting President Guillermo Lasso to declare a state of emergency in two provinces, in Guayaquil, Ecuador November 1, 2022. REUTERS/Santiago Arcos 

Residents watch as forensic technicians work at a crime scene where police officers were killed in response to prisoner transfers from overcrowded prisons, prompting President Guillermo Lasso to declare a state of emergency in two provinces, in Guayaquil, Ecuador November 1, 2022. REUTERS/Santiago Arcos 

Journalists stand behind a police tape at a crime scene where police officers were killed in response to prisoner transfers from overcrowded prisons, prompting President Guillermo Lasso to declare a state of emergency in two provinces, in Guayaquil, Ecuador November 1, 2022. REUTERS/Santiago Arcos 

A police officer looks at a bullet-riddled police car at a crime scene where colleagues were killed in response to prisoner transfers from overcrowded prisons, prompting President Guillermo Lasso to declare a state of emergency in two provinces, in Guayaquil, Ecuador November 1, 2022. REUTERS/Santiago Arcos 

Police officers stand guard near a bullet-riddled police car at a crime scene where colleagues were killed in response to prisoner transfers from overcrowded prisons, prompting President Guillermo Lasso to declare a state of emergency in two provinces, in Guayaquil, Ecuador November 1, 2022. REUTERS/Santiago Arcos 

A police officer puts up a police tape at a crime scene where colleagues were killed in response to prisoner transfers from overcrowded prisons, prompting President Guillermo Lasso to declare a state of emergency in two provinces, in Guayaquil, Ecuador November 1, 2022. REUTERS/Santiago Arcos 

Residents watch as forensic technicians work at a crime scene where police officers were killed in response to prisoner transfers from overcrowded prisons, prompting President Guillermo Lasso to declare a state of emergency in two provinces, in Guayaquil, Ecuador November 1, 2022. REUTERS/Santiago Arcos 

Forensic technicians work at a crime scene where police officers were killed in response to prisoner transfers from overcrowded prisons, prompting President Guillermo Lasso to declare a state of emergency in two provinces, in Guayaquil, Ecuador November 1, 2022. REUTERS/Santiago Arcos TPX IMAGES OF THE DAY 

A forensic technician works at a crime scene where police officers were killed in response to prisoner transfers from overcrowded prisons, prompting President Guillermo Lasso to declare a state of emergency in two provinces, in Guayaquil, Ecuador November 1, 2022. REUTERS/Santiago Arcos 

A police tape reads "Danger" at a crime scene where police officers were killed in response to prisoner transfers from overcrowded prisons, prompting President Guillermo Lasso to declare a state of emergency in two provinces, in Guayaquil, Ecuador November 1, 2022. REUTERS/Santiago Arcos 

Residents watch as forensic technicians work at a crime scene where police officers were killed in response to prisoner transfers from overcrowded prisons, prompting President Guillermo Lasso to declare a state of emergency in two provinces, in Guayaquil, Ecuador November 1, 2022. REUTERS/Santiago Arcos 

Ecuadorean police officers prepare to put up police tape at a crime scene where fellow police officers were killed in response to prisoner transfers from overcrowded prisons, prompting President Guillermo Lasso to declare a state of emergency in two provinces, in Guayaquil, Ecuador November 1, 2022. REUTERS/Santiago Arcos 

Police block family members of inmates who are allegedly transported in the bus during ongoing prisoner transfers done as part of a government plan to reduce overcrowding in the country's prisons, in Guayaquil, Ecuador November 1, 2022. REUTERS/Vicente Gaibor del Pino