There are now nine confirmed cases in the UK. The source of these infections has not yet been confirmed but cases seem to have been "locally acquired", the World Health Organization (WHO) says.
In Europe, one confirmed case was reported in Sweden on Thursday, as well as one in Italy and a suspected case in France. Swedish authorities said they were not sure how the individual had contracted the virus, but local media report that the individual in Italy had recently returned from the Canary Islands.
Five confirmed cases were also reported in Portugal on Wednesday, as well as seven in Spain.
Though no vaccine has been approved for Monkeypox in Europe, Spanish health authorities have reportedly purchased thousands of smallpox vaccines to deal with the outbreak, according to Spanish newspaper El País. Monkeypox is a member of the same family of viruses as smallpox.
In North America, health authorities in the US state of Massachusetts also confirmed that a man has been infected with Monkeypox.
He had recently travelled to Canada, where local media report that 13 suspected cases of the virus are being investigated.
According to health officials, the man has been hospitalised, is in "good condition" and "poses no risk to the public".