An emerging sexually transmitted infection that you’ve probably never heard of “could become the next superbug”, according to recent headlines . What exactly is Mycoplasma genitalium , and how worried should we be?

M. genitalium is small bacteria that was first identified in 1981, and at that time it was unclear if it was a STI. Its true nature was only definitively confirmed in 2015 by a large UK survey of people aged 16-45 which found the infection was more common in those who had had more partners …