Table 4. Average annual HIV transmission rate in the study community compared to previous results from a study in Orange Farm township, South Africa [27].

	Viral load (copies/ml)
	<400	400-3,499	3,500-9,999	10,000-49,999	50,000+	Total
Annual HIV transmission rate [13]	0	0.04	0.12	0.14	0.23	-
% of HIV-positive population in the study community	36.5%	10.1%	9.6%	16.4%	27.4%	100%
Not on ART	20.0%	10.0%	12.1%	20.7%	37.1%	100%
On ART	65.8%	10.1%	5.1%	8.9%	10.1%	100%
% of HIV-positive population in Orange Farm	3.1%	8.2%	12.2%	25.5%	51.1%	100%
With CD4 <200 cells/μl	0.0%	0.0%	0.0%	20.6%	79.4%	100%
Weighted HIV transmission rate in the study community	0.001	0.002	0.004	0.013	0.025	0.045
Not on ART	0.000	0.002	0.005	0.017	0.034	0.058
On ART	0.001	0.002	0.002	0.007	0.009	0.022
Weighted HIV transmission rate in Orange Farm	0.000	0.002	0.005	0.021	0.046	0.074
With CD4 <200 cells/μl	0.000	0.000	0.000	0.017	0.072	0.088