The avian flu virus mutated inside the first seriously ill patient in the United States, according to the country’s health authorities. However, they assured that, so far, no person-to-person transmission of the virus has been identified in this patient, who is hospitalized in Louisiana.

Scientists warned that while it is concerning because mutations could make the virus potentially more transmissible between humans, they would be alarming if found in animal hosts or in the early stages of infection or symptom onset, which would facilitate the spread to close contacts.

The Centers for Disease Control and Prevention (CDC) have identified at least 65 human cases of avian flu in the United States, with more than half (36) reported in California, including the country’s first child infected with this virus.

CDC analysis of the Louisiana patient identified mutations in the hemagglutinin gene, which were not found in the samples from infected poultry at the source of the outbreak. This suggests that the changes emerged as the virus replicated in the seriously ill patient.

Former Uruguayan President José Mujica underwent surgery on Friday, during which a stent was successfully placed in his esophagus. In April, a malignant tumor was discovered in the area, which was treated with radiation therapy.

“We did it today because the situation required it at this moment. This will allow him to continue eating orally, continue receiving food as before, and maintain his recovery at home,” explained his personal doctor, Raquel Pannone, in a press conference.

She also took the opportunity to explain how the stent works.

“It is a prosthesis. A device placed inside the esophagus that self-expands. This metal device adheres to the walls of the esophagus and remains there, expanding the esophagus’ opening and allowing the passage of food,” she detailed.

Azerbaijan Airlines stated on Friday that the plane that crashed in Kazakhstan experienced “external, physical, and technical interference,” based on preliminary investigation results, fueling speculation that the aircraft may have been struck by Russian defense missiles.

The Embraer 190 aircraft, operated by Azerbaijan Airlines and carrying 67 people, was en route from Baku, the capital of Azerbaijan, to Grozny, the capital of the Chechen Republic in Russian territory, when it crashed near Aktau, a port on the Caspian Sea in western Kazakhstan, far from its intended route. The crash resulted in the deaths of 38 people, according to Kazakh authorities.

In response to the incident, Azerbaijan Airlines announced the suspension of its flights to several Russian cities, as the “preliminary results of the investigation into the Embraer 190 crash… point to external, physical, and technical interference.”