One-fifth of all Hungarians diagnosed with HIV infections between January and June were under the age of 20, Eszter Ujhelyi, secretary of the National AIDS Committee told local wire service MTI on Friday. Ujhelyi was speaking in conjunction with the Sziget Festival, a weeklong cultural festival held on a Budapest island and traditionally attended by more than 200,000 young people from all over the world. Hungary's Szent Laszlo Hospital, which specializes in communicable diseases, is organizing free AIDS screening at the festival. So far, hospital staff had identified two new cases, Ujhelyi said. She blames the lack of AIDS publicity in Hungary for the rise in infection. 'There have been no preventive efforts in Hungary for years and we are starting to feel the consequences of the lack of information,' Ujhelyi said. The number of very recent infections -- only a month or two old -- had gone up substantially, and people seemed unaware that the disease was fatal. Many people think they can 'use screening as a substitute for condoms,' she said. Official data are available for only the first quarter of this year, in which 35 new cases were diagnosed. That raises the number of registered HIV patients in Hungary to 1665, Ujhelyi said. While official first quarter data coincide with last year, screenings conducted since April suggest that by year end the number will be higher than last year's total of 145 new cases. While gay males continue to be the highest risk group, Ujhelyi said, there had been a rise in the number of middle-aged women infected by African partners. 