The man, who is from the province of Buenos Aires, has monkeypox but health authorities are waiting to finish sequencing the virus before making the official announcement, said an official in Argentina's Health Ministry. The official requested anonymity until the official announcement.
It is the first time the presence of the virus has been confirmed in Latin America.
Authorities have revealed little about the patient beyond saying he travelled to Spain from April 28 through May 16 and had symptoms compatible with monkeypox, including lesions and fever, on Sunday.
Nearly 200 cases of monkeypox have been reported in more than 20 countries not usually known to have outbreaks of the disease, the World Health Organization said on Friday.
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