me i think that untrustworthy imn marriage is the major cause of this problem and too much greedy of money in people on both sides men wanting to go for ladies who ve money at same time going back to young girls as there girlfriends or wife plus young girls going to old men who have money even knowing that they a married yet later go back to young men as there husband and there boyfriend where by there must be exchange of sickness to be spread. may God have mercy coz young coming generations who are to be born infected will lead to a serious problem to the whole nation