A Cuban girl who was requesting a humanitarian visa to treat her leukemia in the U.S. has passed away.

The seven-year-old girl Rebeca Quintana Vázquez passed away in the early hours of Wednesday, July 31, at the Institute of Hematology and Immunology in Havana, due to lymphoblastic leukemia.

"At the time of her passing, we were managing the humanitarian visa to seek options abroad in order to save the life of our Rebeca," wrote Nelson Álvarez on his Facebook profile, known on social media as "El Porfiao de Cuba."

Precisely the day before the girl's death, her father Aymer Quintana Carmenate conducted a live stream to denounce the treatment that the authorities of the Ministry of Health of Cuba had given to her case.

At the time of her direct (blood transfusion), the father said that little Rebeca had one hemoglobin level, which endangered the child's life and there were no platelets available in the Blood Bank.

Her mother, Yicel Vásquez Urquiza, also made a request on social media for blood donors who could support her daughter, even offering to pay "whatever it takes" because "there is none in the bank."

However, the health authorities maintained a position in which they assured that "they have everything, that they are an expert in treating my daughter with recurrent leukemia," stated the distressed father.

Aymer, who said he was from Las Tunas and had been in Havana for three months for his daughter's treatment, indicated in his words that his goal was for the Cuban Minister of Health José Ángel Portal Miranda to hear his plea, since the doctor handling the case did not grant him permission for the visa processing.

“Children today in Cuba are worth nothing… and they can die today in any health institution” and nothing happens, he stated.

"It hurts friends, it hurts a lot to see one of these little ones go. Today I am filled with memories of when I met her with her father," wrote Porfiao in his post alongside a photograph that captures that moment in memory.

In recent years, a growing number of Cuban parents have turned to social media, pleading for a humanitarian visa that would allow them to dream of saving their children's lives.

Although for many patients or their families the humanitarian visa is the only hope of clinging to life, the process is not easy either.

In May, a moving message from the Cuban girl Sofía Mercedes Muñoz Rivero, only six years old, pleaded for help to travel to the United States, where she could receive treatment for acute myeloid leukemia that threatens her life.

"Hello, my name is Sofi. I want to go to the United States because I am a little sick," the little girl begins to say in a video that her parents posted on social media and was shared by hundreds of users.

The request for help for Lia Isabel García Torres, a five-year-old girl who urgently needs assistance to receive treatment for her leukemia in the United States, because there are no possibilities of curing her in Cuba, also progressed.

Another Cuban mother asked for help to obtain a humanitarian visa for her five-year-old daughter, who has been suffering from leukemia since she was two.

"I turn to social media with the hope that someone can help me. Believe me, doing this is not to my liking, and it hurts me greatly to share photos of my little girl, but I need help," said Janet Oliva on Facebook.

In recent years, there have been several cases of Cuban minors who have traveled to the U.S. to treat various severe conditions.

However, other minors have died while awaiting aid from abroad.