Richard Callahan

      Hi, my name is Richard Callahan and I'm a second-year graduate student in Sociology at the University of Washington. I'm interested in studying the spread of epidemics through social networks, and in particular researching the spread of HIV/AIDS in China. I also have a background in criminology; my master's thesis advisor is Dr. Ross Matsueda. 

Here's a link to my Web site: <http://students.washington.edu/rjcal/>. Nice to meet you!