The proportion of volunteers linked by HIV sequence similarity to their suspected transmitting partner ranged from 67.1% in the Copperbelt (Kitwe and Ndola) to 100% in Entebbe but these differences did not quite achieve significance ( Table 4 , p = 0.08, Fisher’s exact test), and they did not vary by the sex of the incident case (p = 0.27).
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Creating an African HIV clinical research and prevention trials network: HIV prevalence, incidence and transmission.
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HIV incidence was nearly 2.5 times higher in the first three months of follow-up compared to subsequent visits for men (p = 0.003, Table 3 ), but for women this only achieved borderline significance.
With the exception of Lusaka women, HIV incidence did not vary significantly by year ( Table 3 ), although a trend was also borderline significant among men in Ndola.