The unlicensed doctor could face life in prison after being charged with spreading HIV and violating medical ethics.
Lack of sanitation in Cambodia kills thousands of people every year, mostly children under the age of five.
Now experts have designed a new, colourful plastic sink to help children learn the importance of hygiene.
The organisation behind ‘Labobo’ designed it with suggestions from families in neighbouring Vietnam – where at least 10,000 have been sold in a year.
Al Jazeera’s Rob Mcbride reports from Cambodia.