A drug that has strong antiviral activity against the AIDS virus could turn out to be the most reliable means of preventing the dangerous disease yet developed. The Lancet journal reports that the pharmaceutical product will soon be publicly available across the UK. The innovative tool is referred to as PreP, the name being an abbreviation of the English term meaning pre-exposure prophylaxis. The name was chosen to show the main action of the product. It will be taken immediately before sexual contact and will protect against contracting AIDS during sex with a sick partner. The preventive effect is guaranteed by the powerful antiviral action of the product, which takes away the viability of the HIV virus as soon as it enters the body. The new drug is believed to reduce the risk of contracting AIDS by at least 85%. The development of PreP is appreciated by scientists as the only link missing until now to close the circle of the effective fight against AIDS. Methods for rapid diagnosis of the disease have already been developed, as well as effective medications for long-term control of HIV infection. It is expected that after the appearance of an effective means of prevention of infection, the curve of the spread of AIDS in the world will finally go sharply and permanently downwards. NEWS_MORE_BOX All prerequisites are now in place for the product to be offered for public availability. In addition to its high efficiency, it also offers an opportunity to permanently reduce the costs of all health institutions around the world focused on the fight against AIDS. Funds that are currently directed towards supportive care for people living with AIDS can be reduced very quickly by reducing the number of new infections. Thus, within just a few years, the funds invested in the development and launch of the innovative product will be recovered. The successful development of HIV antibodies that kill 99% of strains of the insidious virus was also recently announced. This information, along with the development of the aforementioned preventative, gives real hope that the fight against AIDS may soon be brought to a definitive end.