untreated

Physicians are already having conversations with pregnant patients weighing the risks and benefits of taking medications against untreated symptoms, said Dr Bryant.

In fact, studies show that untreated fever in pregnancy is associated with higher risk of heart and facial birth defects, miscarriage and neurodevelopmental disorders — including autism.

Swimmers are advised to protect their noses by keeping their heads above water, using nose plugs and avoiding stirring up sediment in stagnant or untreated freshwater.

The infestation is called myiasis and, if left untreated, can cause serious damage and can even prove fatal as the larvae tear into the tissue with sharp mouth hooks.

One simple solution, she says, is for Scotland to start collecting and using untreated rainwater for watering gardens, washing cars and flushing toilets rather than using precious drinking water.