Monash Institute of Medical Research scientists have found a protein in the female reproductive tract that protects against sexually transmitted diseases (STIs) such as chlamydia and herpes simplex virus (HSV). It is estimated that 450 million people worldwide are newly infected with STIs each year. Chlamydia has the highest infection rate of all the STIs reported in Australia. The research, published today in the prestigious journal, Science, was led by Prof Paul Hertzog, Director of MIMR’s Centre for Innate Immunity and Infectious Diseases, and his team including, Ka Yee Fung and Niamh Mangan.