DEERFIELD, Ill. — Walgreens on Monday announced that beginning July 13, providers at Walgreens Healthcare Clinic locations in 17 new markets will be able to prescribe PrEP (Pre-Exposure Prophylaxis), a medication protocol for people who don’t have HIV to help proactively protect against HIV infection. The new markets include Cincinnati, Cleveland, Columbus (Ohio), Dallas, Denver, Kansas City, Knoxville, Las Vegas, Louisville, Memphis, Nashville, Orlando, Philadelphia, Phoenix, Tucson, Washington D.C., and Wichita.