By Xiong Yuqing
A HIV positive male primary school teacher in Taipei knowingly had unprotected sex with over 100 men, infecting 50 of them, according to Taiwan media.
The teacher, 38, surnamed Feng, was suspected of selling Ketamin online and had sex with men attending his gay-sex parties.
Feng started working in the primary school from last August and was accused of possessing drugs and spreading AIDS only 3 days at his new job. Feng was dismissed last December.
Another school Feng previously worked for 10 years said they had checked students "close" to Feng, and no students was found infected so far.
Feng has been detained by police, and could face up to 12 year in prison if convicted.