title: From a single case, investigators discover a web of HIV infection.
mesh_terms: D018563:Disease Notification; D015483:HIV Antibodies / Q000097:blood; D015658:HIV Infections / Q000453:epidemiology / Q000635:transmission*; D006801:Humans; D010414:Pennsylvania / Q000453:epidemiology; D011329:Prisoners; D012747:Sexual Partners; D015819:Substance Abuse, Intravenous
chemical_list: D015483:HIV Antibodies