Hau Giang Province leads the country in prostitution control and prevention, the Ministry of Labour, Invalids and Social Affairs said, checking 720 establishments in the first half and slapping fines of US$4,180 on 137 of them found violating the law.
Countrywide 9,800 massage parlors, karaoke places, cafes, and other establishments were found to violate prostitution laws out of 28,000 that were inspected.
There were 380 cases in which 1,500 prostitutes, brokers, and their clients were caught red-handed.
Authorities have prosecuted 474 people.
Disturbingly, the average age of pimps was found to have declined by eight years to 18.