The Centers for Disease Control and Prevention (CDC) has new guidelines that urge high-risk individuals to take pre-exposure prophylaxis (PrEP) or anti-HIV medicines to decrease the chances of transmission.

The CDC notes that if PrEP are used daily, studies have shown that the medication is able to reduce HIV infection by as much as 90 per cent, reports CBS News.

"While a vaccine or cure may one day end the HIV epidemic, PrEP is a powerful tool that has the potential to alter the course of the U.S. HIV epidemic today," Dr Jonathan Mermin, director of the CDC's National Center for HIV/AIDS, Viral Hepatitis, STD and TB Prevention, said in a statement.

"These guidelines represent an important step toward fully realizing the promise of PrEP. We should add to this momentum, working to ensure that PrEP is used by the right people, in the right way, in the right circumstances," Mermin elaborates

The guidelines encourage clinicians to consider the drug regiment for high risk individuals, including sexually active gay men who do not use condoms, individuals with high-risk partners, adult-injection drug users and the like.

The US Food and Drug Administration approved in July 2012 Truvada, a daily pill to be taken that combines 2 anti-HIV medications. The PrEP must be taken everyday to prevent the drop of protection it provides. Those who are taking it are still recommended to practice safe sex by using Truvada in conjunction with other measures.

"(It's) one that benefits not only the individual patient at risk for HIV infection but also will help to reduce the number of new HIV infections across the United States," said Fauci, director of the National Institute of Allergy and Infectious Diseases at the National Institutes of Health. "It should be used together with -- and complementary to -- condoms and not as a substitute for condoms," relays CNN.