WITNESS

Children swimming in the sewage treatment pond in Morata, Port Moresby, despite warnings.
The city’s sewage treatment ponds at Morata and Waigani are infected with the polio virus, according to the World Health Organisation.
People have therefore been warned not to eat fish and kangkung (watercress) taken from these ponds.
They are also warned not to swim or be involved in any activities there.