A highly drug-resistant gonorrhoea outbreak has been detected in the north of England, prompting a nationwide alert.
The outbreak, first detected in Leeds in March, has now spread - with cases now reported in patients in Macclesfield, Oldham and S****horpe.
Fifteen cases have been detected by Public Health England so far, the British Association for Sexual Health and HIV said.
Reports to PHE's sexually transmitted bacteria reference unit of cases of the infection being highly resistant to the azithromycin drug have previously been rare, it added.
All of the cases involve heterosexual patients, and some people have reported partners from other parts of England.
The association said:
PHE is concerned that the effectiveness of current front-line dual therapy for gonorrhoea will be threatened if this resistant strain continues to spread unchecked.