Single genital lesions and sores on the mouth or anus have been identified as symptoms of the monkeypox virus.
The symptoms, which have led to hospital admissions, have been identified by an international collaboration of clinicians across 16 countries.
The study, which was led by researchers at the Queen Mary University of London, aims to improve future diagnosis and slow the spread of the virus while there is a global shortage of vaccines and treatments for human monkeypox infection.
It was carried out in response to the "emerging global health threat" and reported on 528 confirmed infections at 43 sites between 27 April and 24 June 2022.
Gay and bisexual men are disproportionately affected by the spread of the virus, with 98% of those infected from this group.
The researchers said that "although sexual closeness is the most likely route of transm...