Previously detected in the UK and Portugal, monkeypox has reportedly infected gay men in Madrid FILE PHOTO: A healthcare worker conducts tests at a microbiology lab in Madrid, Spain, April 14, 2020 on April 14, 2020 © AFP / Oscar Del Pozo

Health authorities in Spain have issued an alert over a potential outbreak of monkeypox – a rare and incurable viral infection – in Madrid. The alert follows similar outbreaks in the UK and Portuga