A view of San Isidro road in Havana, Cuba, May 2, 2021. REUTERS/Alexandre Meneghini

A banner displaying the portrait of late Cuban President Fidel Castro hangs on the street in downtown Havana, Cuba, May 1, 2021. REUTERS/Alexandre Meneghini

Workers of a state company shout slogans during celebrations of Labour Day, also known as May Day, in Havana, Cuba, May 1, 2021. REUTERS/Alexandre Meneghini

The full moon, also known as the Supermoon, rises over Havana, Cuba, April 26, 2021. REUTERS/Alexandre Meneghini

The full moon, also known as the Supermoon, rises over Havana, Cuba, April 26, 2021. REUTERS/Alexandre Meneghini

Boats with Cuban flags sail during a protest against the trade embargo on Cuba by the U.S., in Havana, Cuba, April 25, 2021. REUTERS/Alexandre Meneghini/Pool

People watch a line of boats passing near the Malecon seafront during a protest against the trade embargo on Cuba by the U.S., in Havana, Cuba, April 25, 2021. REUTERS/Alexandre Meneghini/Pool

A line of boats is seen near the U.S. Embassy during a protest against the trade embargo on Cuba by the U.S., in Havana, Cuba, April 25, 2021. REUTERS/Alexandre Meneghini/Pool

A health worker asks questions in a quarantine area amid concerns about the spread of the coronavirus disease (COVID-19) in Havana, Cuba, April 8, 2021. Picture taken April 8, 2021. REUTERS/Alexandre Meneghini

A digital screen on the street displays images of the coronavirus amid concerns about the spread of the coronavirus disease (COVID-19) in Havana, Cuba, April 10, 2021. Picture taken April 10, 2021. REUTERS/Alexandre Meneghini

A health worker asks questions in a quarantine area amid concerns about the spread of the coronavirus disease (COVID-19) in Havana, Cuba, April 8, 2021. Picture taken April 8, 2021. REUTERS/Alexandre Meneghini

Florencio Chavez sells herbs for medicine in downtown Havana, Cuba, March 30, 2021. Picture taken on March 30, 2021. REUTERS/Alexandre Meneghini

Chofer Eliasez Mendez buys herbal medicine in Havana, Cuba, April 9, 2021. Picture taken on April 9, 2021. REUTERS/Alexandre Meneghini

An image of late revolutionary hero Ernesto "Che" Guevara is displayed in a pharmacy in Havana, Cuba, April 10, 2021. Picture taken on April 10, 2021. REUTERS/Alexandre Meneghini

A client buys medicine in a pharmacy in Havana, Cuba, April 9, 2021. Picture taken on April 9, 2021. REUTERS/Alexandre Meneghini

People in quarantine stand behind a police line amid concerns about the spread of the coronavirus disease (COVID-19) in Havana, Cuba, April 8, 2021. Picture taken on April 8, 2021. REUTERS/Alexandre Meneghini

People pass by a painting referring to the 62nd anniversary of the Cuban Revolution, in Havana, Cuba, April 16, 2021. Picture taken on April 16, 2021. REUTERS/Alexandre Meneghini

A family watches local TV news showing Cuba's First Secretary of the Communist Party and former President Raul Castro addressing the audience of the VIII Congress of the Communist Party of Cuba's opening session in Havana, Cuba, April 16, 2021. REUTERS/Alexandre Meneghini

People pass by a billboard advertising the VIII Congress of the Communist Party of Cuba that reads: "The Party is the soul of the Revolution" in Havana, Cuba, April 16, 2021. REUTERS/ Alexandre Meneghini

Bengal tiger Garfield reacts at the zoo in Havana, Cuba, April 14, 2021. Picture taken on April 14, 2021. REUTERS/Alexandre Meneghini

A white bengal tiger cub is seen beside its mother at the zoo in Havana, Cuba, April 14, 2021. Picture taken on April 14, 2021. REUTERS/Alexandre Meneghini

Bengal tiger Garfield interacts with zoo keeper Angel Cordero at the zoo in Havana, Cuba, April 14, 2021. Picture taken on April 14, 2021. REUTERS/Alexandre Meneghini

Bengal tiger Garfield reacts at the zoo in Havana, Cuba, April 14, 2021. Picture taken on April 14, 2021. REUTERS/Alexandre Meneghini TPX IMAGES OF THE DAY

A white bengal tiger cub is seen inside a cage at the zoo in Havana, Cuba, April 14, 2021. Picture taken on April 14, 2021. REUTERS/Alexandre Meneghini

Bengal tiger Garfield interacts with zoo keeper Angel Cordero at the zoo in Havana, Cuba, April 14, 2021. Picture taken on April 14, 2021. REUTERS/Alexandre Meneghini

Bengal tiger Fiona reacts while feeding its cubs at the zoo in Havana, Cuba, April 14, 2021. Picture taken on April 14, 2021. REUTERS/Alexandre Meneghini

Healer Jorge Goliat performs a surgery in Havana, Cuba, April 13, 2021. Picture taken on April 13, 2021. REUTERS/Alexandre Meneghini

Healer Jorge Goliat performs a surgery in Havana, Cuba, April 13, 2021. Picture taken on April 13, 2021. REUTERS/Alexandre Meneghini

Healer Jorge Goliat performs a surgery in Havana, Cuba, April 9, 2021. Picture taken on April 9, 2021. REUTERS/Alexandre Meneghini

Healer Jorge Goliat treats a patient in Havana, Cuba, April 9, 2021. Picture taken on April 9, 2021. REUTERS/Alexandre Meneghini

Healer Jorge Goliat performs a surgery in Havana, Cuba, April 13, 2021. Picture taken on April 13, 2021. REUTERS/Alexandre Meneghini

Healer Jorge Goliat helps a patient in Havana, Cuba, April 13, 2021. Picture taken on April 13, 2021. REUTERS/Alexandre Meneghini

A dog barks as patients (not pictured) arrive early in the morning to be treated by healer Jorge Goliat in Havana, Cuba, April 13, 2021. Picture taken on April 13, 2021. REUTERS/Alexandre Meneghini

People wait to be treated by healer Jorge Goliat (not pictured) in Havana, Cuba, April 13, 2021. Picture taken on April 13, 2021. REUTERS/Alexandre Meneghini

Chofer Eliasez Mendez buys herbal medicine after a consultation with healer Jorge Goliat (not pictured) in Havana, Cuba, April 9, 2021. Picture taken on April 9, 2021. REUTERS/Alexandre Meneghini

Healer Jorge Goliat talks to patients in his consulting room in Havana, Cuba, April 9, 2021. Picture taken on April 9, 2021. REUTERS/Alexandre Meneghini

A machete used for surgeries is seen on the desk of healer Jorge Goliat as he talks to a patient in Havana, Cuba, April 13, 2021. Picture taken on April 13, 2021. REUTERS/Alexandre Meneghini

Healer Jorge Goliat sits in his consulting room in Havana, Cuba, April 9, 2021. Picture taken on April 9, 2021. REUTERS/Alexandre Meneghini

Healer Jorge Goliat performs a surgery in Havana, Cuba, April 9, 2021. Picture taken on April 9, 2021. REUTERS/Alexandre Meneghini

People wait to be treated by healer Jorge Goliat (not pictured) in Havana, Cuba, April 13, 2021. Picture taken on April 13, 2021. REUTERS/Alexandre Meneghini

Healer Jorge Goliat smokes a cigarette in his consulting room in Havana, Cuba, April 9, 2021. Picture taken on April 9, 2021. REUTERS/Alexandre Meneghini

A patient uses patches after being treated by healer Jorge Goliat (not pictured) in Havana, Cuba, April 13, 2021. Picture taken on April 13, 2021. REUTERS/Alexandre Meneghini

Healer Jorge Goliat sharpens his machete prior to a surgery in Havana, Cuba, April 13, 2021. Picture taken on April 13, 2021. REUTERS/Alexandre Meneghini

People wait to be treated by healer Jorge Goliat (not pictured) in Havana, Cuba, April 13, 2021. Picture taken on April 13, 2021. REUTERS/Alexandre Meneghini

A woman walks past houses in quarantine amid concerns about the spread of the coronavirus disease (COVID-19), in Havana, Cuba, April 8, 2021. Picture taken April 8, 2021. REUTERS/Alexandre Meneghini TPX IMAGES OF THE DAY

People wait in line to enter a store in Havana, Cuba, April 10, 2021. Picture taken April 10, 2021. REUTERS/Alexandre Meneghini

A woman passes by a poster displaying images of late Cuban President Fidel Castro, Cuba's First Secretary of the Communist Party and former President Raul Castro and Cuba's President Miguel Diaz Canel with a sign that reads: "We are continuity", in Havana, Cuba, April 12, 2021. Picture taken April 12, 2021. REUTERS/Alexandre Meneghini

A picture of former Cuban President Raul Castro is displayed in the window of a state building in Havana, Cuba, April 11, 2021. Picture taken April 11, 2021. REUTERS/Alexandre Meneghini

An American black bear cub is seen at Woburn Safari park before its opening as coronavirus disease (COVID-19) restrictions begin to ease, in Woburn, Britain April 11, 2021. REUTERS/Andrew Boyers

An American black bear cub is seen at Woburn Safari park before its opening as coronavirus disease (COVID-19) restrictions begin to ease, in Woburn, Britain April 11, 2021. REUTERS/Andrew Boyers

An American black bear cub is seen at Woburn Safari park before its opening as coronavirus disease (COVID-19) restrictions begin to ease, in Woburn, Britain April 11, 2021. REUTERS/Andrew Boyers

A lion cub yawns at Woburn Safari park before its opening as coronavirus disease (COVID-19) restrictions begin to ease, in Woburn, Britain April 11, 2021. REUTERS/Andrew Boyers

Lion cubs play at Woburn Safari park before its opening as coronavirus disease (COVID-19) restrictions begin to ease, in Woburn, Britain April 11, 2021. REUTERS/Andrew Boyers

A view of a painting in San Isidro road in Havana, Cuba, April 6, 2021. Picture taken April 6, 2021. REUTERS/Alexandre Meneghini

Dissident artist Luis Manuel Otero Alcantara speaks during an interview at the headquarters of San Isidro Movement in Havana, Cuba, April 6, 2021. Picture taken April 6, 2021. REUTERS/Alexandre Meneghini

A man who did not want to be identified shows on his mobile phone an image displayed in social media of the rapper Maykel Osorbo with handcuffs clamped around one wrist, in Havana, Cuba, April 6, 2021. Picture taken April 6, 2021. REUTERS/Alexandre Meneghini

A view of a coral colony at Playa Giron, Cuba, December 6, 2020. Picture taken on December 6, 2020. REUTERS/Sarah Marsh

A view of a coral colony on the coast of Havana, Cuba, March 28, 2021. Picture taken on March 28, 2021. REUTERS/Sarah Marsh

A view of a coral colony on the coast of Havana, Cuba, March 28, 2021. Picture taken on March 28, 2021. REUTERS/Sarah Marsh

A view of a coral colony on the coast of Havana, Cuba, March 28, 2021. Picture taken on March 28, 2021. REUTERS/Sarah Marsh