RIO DE JANEIRO, BRAZIL - The application of lopinavir/ritonavir, also used to fight HIV infections, along with interferon beta, a protein that helps cells protect themselves from infection, confirmed medical sources to EL PAÍS.

"It's an experimental course of treatment that has yielded positive results against other viruses," explains Albert Bosch, president of the Spanish Society of Virology. "One of its greatest advantages is that it is an approved drug used in other indications, so there is no question about its safety," he adds.

One of these treatment-prone viruses is the one that causes Middle Eastern Respiratory . . .

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