MODE OF TRANSMISSION

Efficiency of different routes of HIV transmission and their contribution to total number of cases in India

Exposure Route                              Per cent            Percentage
                                                       Efficiency              of cases
                                                     (World over)            (India)*
 Blood transfusion                            90-95                       3.33
 Perinatal                                          20-40                       2.13
 Sexual Intercourse                        0.1to 1                     84.34
 Male-to-female,unprotected
                vaginal sex                      0.1-0.2                        3.50
 Female-to-male,unprotected 
                vaginal sex(b)                0.033-0.1
 Male to -male, unprotected
                      anal sex                        0.5-3.0
 Injecting drugs use                          0.5-1.0
 Needle stick exposure                       <0.5
 **


(Source* NACO, Monthly report November 2001**