Vietnam Population and AIDS Indicator Survey 2005 ... - Measure DHS
Vietnam Population and AIDS Indicator Survey 2005 ... - Measure DHS
Vietnam Population and AIDS Indicator Survey 2005 ... - Measure DHS
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9.5 HIV PREVALENCE<br />
The <strong>2005</strong> VPAIS found that 0.5 percent of Hai Phong adults age 15-49 are infected with HIV.<br />
The VPAIS tested 1,675 individuals for presence of HIV infection. Nine people were found to be HIV<br />
positive, two women <strong>and</strong> seven men. HIV prevalence in Hai Phong is low among both women <strong>and</strong> men.<br />
HIV prevalence was found to be 0.2 percent among women <strong>and</strong> 0.9 percent among men.<br />
The low prevalence has repercussions for what, if any, further analyses might be possible. The<br />
very small number of positive cases identified is a function of both prevalence itself being very low, <strong>and</strong><br />
the sample size. This does not reduce our confidence in the estimate itself; however, the confidence<br />
intervals of the estimate, in conjunction with the low level of prevalence, make it difficult to conclude that<br />
there exist any statistically significant differentials in prevalence. This is illustrated in Figure 9.1 which<br />
presents HIV prevalence estimates with their confidence intervals.<br />
Figure 9.1 Confidence Intervals of HIV Prevalence,<br />
<strong>Vietnam</strong> <strong>2005</strong><br />
2.4 Percentage<br />
2.2<br />
2.0<br />
2.1<br />
1.8<br />
1.6<br />
1.7<br />
1.4<br />
1.2<br />
1.0<br />
0.8<br />
0.6<br />
0.4<br />
0.2<br />
0.0<br />
1.0<br />
0.0<br />
Hai Phong<br />
province<br />
0.5<br />
1.0<br />
0.9<br />
0.7<br />
0.5<br />
0.2<br />
0.1<br />
0.0 0.0 0.0<br />
Men Women Urban Rural<br />
0.3<br />
So while one of the objectives of the VPAIS was to learn more about the characteristics of people<br />
infected with HIV, this will not be possible because the low prevalence level results in identifying too few<br />
cases of HIV-positive people for further analysis.<br />
Hai Phong was selected as the province in which to do HIV testing as it was a province suspected<br />
of higher than national prevalence. Given the low level of prevalence, simply conducting a survey with a<br />
larger sample would not be a worthwhile investment.<br />
Equally low levels of prevalence have been found in a survey conducted in <strong>2005</strong> (NIHE <strong>2005</strong>) in<br />
Thai Binh province <strong>and</strong> Ho Chi Minh City. The survey collected 3,000 blood samples in Thai Binh<br />
province <strong>and</strong> 1,501 samples in Ho Chi Minh City. The survey identified 11 HIV-positive cases in Thai<br />
Binh province, resulting in a prevalence estimate of 0.3 percent, <strong>and</strong> 10 HIV-positive cases in Ho Chi<br />
Minh City, resulting in a prevalence estimate of 0.7 percent.<br />
90 | HIV Prevalence in Hai Phong Province