Welsh tourists in Patagonia have been advised to take precautions after an incurable virus has killed nine people.
Hantavirus is usually transmitted by rodents but health officials believe that, unlike other strains, this outbreak is communicable to humans.
estimate of the press there are about 60 cases, with 50 quarantined.
The epidemic began in Epuyen, a small lake town north of Esquel, the largest city founded in Wales in the western Andean area of Welsh Patagonia.
Government officials in Chubut have warned tourists from Wales to take precautions if they visit the region, especially if flu-like symptoms appear within a week or two of their visit.
Hantavirus can cause severe lung condition and blood vessel problems, which leads to breathing difficulties, heart failure and death.
According to the World Health Organization (WHO), it has a mortality rate of 38% and there is no "specific treatment" for and disease.
Huw Llewellyn-Jones, whose friend is traveling in Patagonia, said: "[She] will not now visit the Welsh cities in the Andes because of all the uncertainty related to this terrible epidemic.
because the Atlantic coast is far from this, but it is still worried that it may spread to Madryn and Trelew because it seems to be spread by human contact.
"Currently everyone is on vacation and many people are traveling in and out
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The authorities Epuyén and the Malbrán Institute of Buenos Aires, which is analyzing the possible causes of the virus, believe that the epidemic began when a farmer unknowingly infected he greeted his friends with a kiss at a birthday party.
The first mortal victim was the same girl ̵
Six other people who had also attended the party died.
Public festivals in three cities have been canceled, but there are no large Welsh festivals in the Andes in January or February.
Esquel provides hospitals and intensive care facilities to nearby areas.
Health authorities are seeking legal permission for isolation in infected cases to oblige and advised people to avoid sheds, orchards or pastures.