Monkeypox can be contained in countries outside of Africa where the virus is not usually detected, the World Health Organization (WHO) says.
More than 100 cases of the virus – which causes a rash and a fever – have been confirmed in Europe, the Americas and Australia.
That number is expected to rise still, but experts say the overall risk to the broader population is very low.
The virus is most common in remote parts of Central and West Africa.
“This is a containable situation,” the WHO’s emerging disease lead Maria Van Kerkhove said at a news conference on Monday.
“We want to stop human-to-human transmission. We can do this in the non-endemic countries,” she added – referring to recent cases in Europe and North America.