Breakthrough study could lead to single-dose vaccine for HIV and Covid

The study treated mice with a combination vaccine which could protect against HIV in one dose - (Getty Images)

A single-dose vaccine for HIV and Covid-19 could be developed by combining two different immune system stimulants, new research has suggested.

Scientists at MIT and the Scripps Research Institute found that combining two substances to stimulate the immune system, known as adjuvants, in vaccines improved immune responses to HIV in mice, compared to using either one alone.