A study carried on nearly 3,300 African couples depicted that risk for contracting HIV doubles for men, who have female pregnant partners with HIV infectivity.

A combined research that was launched by the University of Nairobi and the Kenyatta National Hospital read 1,085 couples, with the male having HIV, and 2,236 couples, in which, the female was infected with the disease. The research went on for almost two years.

In general it recognized that pregnancy tends to raise risk HIV infectivity in both males and females. However, other elements besides pregnancy induce female HIV infectivity, such as, sexual behaviors.

Researchers of the study compete that the association between pregnancy and female to male diffusion of the infectivity is rather more undeviating.

In order to offer the final and absolute verdict regarding the same theme, researchers are of the opinion that additional study is necessary, so as to determine if there is any epidemiological reason for the male female incongruity.

The study was presented in Pittsburgh at the 2010 International Microbicides Conference on Monday.