One man died in Cuba and another in Mexico after testing positive for monkeypox, the countries announced.

An Italian tourist visiting Cuba died Sunday, a day after being diagnosed with the virus. The 50-year-old man was the country’s first confirmed case of monkeypox.

He had been traveling through various provinces in Cuba for only three days before falling ill, Cuba’s Ministry of Public Health reported.

The tourist developed skin lesions and his condition rapidly deteriorated as he went into cardiac arrest before dying.

Cuba health officials did not attribute the tourist’s death to the virus. An autopsy report pointed the cause of death to sepsis linked to pneumonia and organ damage.

Similarly, Mexican officials said a man who died in the country did not succumb to monkeypox, despite testing positive.