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The NHS recently announced the rollout of the world's first vaccine programme to protect against gonorrhoea, aimed principally at gay and bisexual men.

England will be the first country in the world to start vaccinating people against the sexually transmitted infection gonorrhoea.

Scientists believe they have found a new effective antibiotic for gonorrhoea, which could be one of the most promising in decades.

"If we don't deal with it now, we're going to see more people with serious types of gonorrhoea and more cases of antibiotic resistance," he says.

HIV takes seven weeks to be detected, hepatitis C and B can take 12 weeks or more, and chlamydia and gonorrhoea can show up within a fortnight.