translation.en: If you look at the blue line, the areas with low levels of malaria, you can see in those areas, actually, the number of sexual partners is decreasing a lot as HIV prevalence goes up.
translation.zh: 看这条蓝线 在这些疟疾疫情较轻的地区 性伴侣的数量在巨减 当艾滋病感染率变高的时候