UNAIDS and WHO have highlighted that India topped the league of nations in the number of HIV-infected cases, with the country estimated to account for 4 million patients, out of the total global caseload of 30 million. In a joint report on the global AIDS scenario, UNAIDS and WHO have also highlighted that recent testing of pregnant women in Pondicherry showed an infection rate of around four per cent, that among truck drivers in Tamil Nadu, HIV prevalence quardrupled from 1.5 per cent, that among truck drivers in Tamil Nadu, HIV prevalence quardrupled from 1.5 per cent in 1995 to 6.2 in just one year later and that in the north-eastern State of Manipur, where the AIDS epidemic took off quickly among male drug injectors, some drug clinics were registering HIV rates as high as 73 per cent in 1996.