The UK has recently seen a resurgence of meningococcal B (MenB) disease, with a cluster of cases in Kent described as “unprecedented” by the health secretary, Wes Streeting. As attention turns from the current MenB outbreak to how to prevent future outbreaks, another challenge is also growing: gonorrhoea is becoming harder to treat as antibiotic resistance rises. These two challenges might seem unrelated, but they are now linked by a single vaccine.

Some sexual health services are using a vaccine originally designed to prevent MenB disease as part of efforts to reduce gonorrhoea. At first glance, that might sound surprising. But the bacteria that cause meningitis and gonorrhoea are closely related, meaning a vaccine targeting one may offer some protection against the other.

This kind of scientific overlap is drawing increasing attention. Developing brand new vaccines from scratch takes years – sometimes decades – and is costly. Repurposing existing ones could offer a faster, more practical route.

The MenB vaccine itself already has a strong public profile in the UK. Campaigns calling for wider access became one of the most signed petitions in UK history. It has helped bring attention to........

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