City Hall is on full alert for monkeypox infections in at-risk areas in the capital, including locations where foreign tourists gather in large numbers.

Bangkok governor Chadchart Sittipunt on Monday discussed preparations for monkeypox infections after the World Health Organisation on Saturday declared monkeypox as "A Public Health Emergency of International Concern".

Mr Chadchart said that public health personnel will be educated about the disease while health service centres, clinics and hospitals in Bangkok will be instructed to watch out for anyone suspected of contracting the disease.

The Thai Hotels Association will also be asked to tell all hotels in Bangkok to look out for and report suspected cases to City Hall's district offices, Mr Chadchart said.

Pharmacies in the capital will also be asked to do the same.

"No cases of monkeypox have been reported in Bangkok yet," Mr Chadchart said.

"However, a close watch is being kept on at-risk communities, such as in Soi Nana where Nigerian nationals gather."

This came after the first confirmed case in the country, a Nigerian tourist who fled to Cambodia after he was found to have the disease.

Meanwhile, tracing of the Nigerian man's close contacts in Phuket where he stayed for the past month continues.

Tests conducted on 27 people who came into close contact with the Nigerian tourist came back negative.

The disease is transmitted through close contact, so it is likely to be passed on during sex.