Pakistani doctor put in custody after more than 500 people test HIV-positive

There's a growing sense of alarm in a village in Southern Pakistan where in recent weeks more than 500 people, many of whom are children, have tested positive for HIV. Hundreds of fake doctors are thought to be operating across the country, authorities are trying to determine if this localized epidemic is the result of medical negligence or malicious intent by a local medical practitioner who is himself infected by the virus.