Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2019 Mar 14;5(1):e12034. doi: 10.2196/12034

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

©Katherine R McLaughlin, Lisa G Johnston, Laura J Gamble, Trdat Grigoryan, Arshak Papoyan, Samvel Grigoryan. Originally published in JMIR Public Health and Surveillance (http://publichealth.jmir.org), 14.03.2019.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work, first published in JMIR Public Health and Surveillance, is properly cited. The complete bibliographic information, a link to the original publication on http://publichealth.jmir.org, as well as this copyright and license information must be included.

PMC Copyright notice

Posterior distributions for the size of selected populations: (a) people who inject drugs (PWID), Vanadzor 2016; (b) female sex workers (FSW), Yerevan 2016; (c) PWID, Yerevan 2016; and (d) men who have sex with men (MSM), Vanadzor 2016. The 90% credible interval is indicated by the shaded blue region and the posterior median by a vertical red line.