Distribution of AIDS diagnoses in New York as of 2017, by transmission category

Transmission category is the term for the classification of cases that summarizes a person’s possible HIV risk factors; the summary classification results from selecting, from the presumed hierarchical order of probability, the one risk factor most likely to have resulted in HIV transmission. The exception is men who had sexual contact with other men and injected drugs; this group makes up a separate transmission category. Data have been statistically adjusted to account for missing transmission category.

Diagnoses of HIV infection classified as stage 3 (AIDS) refer to confirmed diagnoses during a given time period. For example, the 2017 data on AIDS diagnoses would include persons with laboratory-confirmatory evidence of AIDS diagnoses during January 1, 2017 through December 31, 2017 and reported to CDC through June 30, 2018. Data for the year 2017 are preliminary and based on 6 months reporting delay. Therefore, trends should only be assessed using data through the year 2016 to allow sufficient time (at least 12 months) for reporting of case information to CDC to accurately assess trends.