The successful tests in pigs could now lead to testings in mammals. Depending on the successes of these tests, human testings could be performed in two years’ time.

A spokeswoman from the British HIV Association said, “This research is still in the early stages of development and there is clearly some way to go from testing in pigs and mathematical modelling to human trials before its effectiveness can be assessed.”

This statement was concurred by a representative of the Terrence Higgins Trust, adding that “medical advances have come on leaps and bounds for HIV in the UK in recent years, however we do know that taking a pill each day does present practical barriers for some people living with HIV. We welcome the prospect of a treatment that removes these barriers, and presents all people living with HIV with further choice, provided that it is no less effective than current options available.”