👉 In the context of medicine, a "retrovaccine" refers to a vaccine that is designed to target the genetic code of a retrovirus. Retroviruses are viruses that cause illness in humans and can be transmitted between individuals through sexual contact or other intimate relationships. By targeting the genetic code of these viruses, retrovaccines may help prevent the spread of HIV and other sexually transmitted infections (STIs) caused by these viruses. For example, a retrovaccine developed for human immun