Increasing the number of AIDS

While in 1985 for every 99 infected men had an infected woman, a decade later this ratio dropped to an infected for every four males on average woman.
Prevention campaigns often fail in relation to women because they assume they are not at risk or promote preventive methods over which women have little or no decision-making power, as the use of condoms, abstinence and mutual fidelity.
Increasing the number of AIDS cases among women is not only observed in Brazil and can be understood if we take into account that 90% of AIDS cases today are concentrated in developing countries where women mostly have yet to economic independence or social. https://www.ag.ndsu.edu/forums/range/read.php?9,27629
According to the Ministry of Health, the number of female cases accumulated in Brazil on 95/96 1978-1002 transmitted by unprotected sex; 412 blood contamination, including drug use, prenatal transmission by 131 and 433 not defined.
The numbers of AIDS in the world
According to estimated data, more than seven million cases of AIDS have been reported worldwide since the beginning of the epidemic in 1981 and more than 4.5 million people died because of it. http://uchem.berkeley.edu/forum/read.php?26,678412 That are more than 21 million adults infected worldwide, and 12.2 million men and 8.8 million women, and 800,000 children are estimated. 
Between 75 and 85% of infections are due to unprotected sex and almost three quarters of these infections are the result of heterosexual intercourse.
However, there is a growing increase in the number of cases among injecting drug users who share needles and syringes which currently represent 10% of reported cases.. https://www.ag.ndsu.edu/forums/range/read.php?9,27631