Using the Revised Centers for Disease Control and Prevention Staging System to Classify Persons Living With Human Immunodeficiency Virus in New York City, 2011-2015.

The proportion of persons living with human immunodeficiency virus (HIV) in New York City in stage 1 (CD4 ≥ 500 cells/mm) increased from 50.6% in 2011 to 59.6% in 2015. The revised Centers for Disease Control and Prevention staging system of HIV infection is a useful tool with which to classify persons living with HIV.