In 2017, the Russian Federation (RF) is estimated to have the largest number of HIV-1 infected citizens of any country in Europe. Cumulative reported diagnoses reached over 1.16 million infections by mid-2017, and actual infections, including those that remain undiagnosed and/or unreported, are doubtless substantially higher. In contrast to the global epidemic pattern, the HIV epidemic in the RF and in most countries of Eastern Europe and Central Asia continues to expand significantly.