Figure 3

Sexual networks (n = 290) of HIV-infected participants in Taizhou prefecture, Eastern China, 2008–2010 (with the average degree of network 13.0). (a) Sexual networks (n = 241) of heterosexually infected HIV positive participants(with the average degree of network 12.2(rang from 1 to 81)): a(1–1) sexual networks (n = 131) of male HIV positive participants with none of risky contacts tested HIV positive; a(1–2) sexual networks (n = 49) of female HIV positive participants with none of risky contacts tested HIV positive; a(2–1) sexual networks (n = 37) of male HIV positive participants with one of risky contacts tested HIV positive; a(2–2) sexual networks (n = 12) of female HIV positive participants with one of risky contacts tested HIV positive; a(3–1) sexual networks (n = 8) of male HIV positive participants with two of risky contacts tested HIV positive; a(3–2) sexual networks (n = 4) of female HIV positive participants with two of risky contacts tested HIV positive. (b) Sexual networks (n = 49) of homosexually infected HIV positive participants (i.e., HIV-infected MSM) (with the average degree of network 15.3(rang from 2 to 80)): b(1) sexual networks (n = 14) of HIV-infected MSM with none of risky contacts tested HIV positive; b(2) sexual networks (n = 11) of HIV-infected MSM with one of risky contacts tested HIV positive. The one inside the small dashed square represents the network of an HIV-infected MSM whose wife tested HIV positive. b(3) sexual networks (n = 24) of HIV-infected MSM with two or more of risky contacts tested HIV positive. Red or dark dots represent male HIV positive participants; Red or dark squares represent female HIV positive participants; Grey dots represent risky contacts who tested HIV negative in the present survey; Circles represent risky contacts who did not receive HIV testing. Hollow dots or squares represent HIV-infected individuals who refused to participate in the present survey.