An investigation is under way after yet another outbreak of the E Coli infection hit Scotland in recent years.

Twenty people have been infected in the most recent case including a three-year-old girl who has died as a result of the disease.

Watchdog Food Standards Scotland has issued a blanket ban on a cheese firm whose products have been linked to the outbreak.

But while precautionary measures are taken to ensure more cases are prevented, foodstuff is not the only source of possible contraction of E Coli and its various strains.

E Coli is a bacteria that can be spread through contaminated food or water which can also be very contagious through poor hygiene.

Initially it can cause rigorous stomach pain and bloody diarrhoea, eventually leading to kidney failure.

The infection can be fatal for young children, the elderly or those with immunity difficulties.

It is found in both the gut and faeces of animals, particularly cattle, so contaminated food is often seen as a primary link to cases. Touching infected beasts or even the faeces can lead to infection as well.

Even when not contaminated, under cooked meat can cause E Coli as can be found in some raw vegetables.

Water can also be contaminated - drinking or swimming in this, particularly the latter in ponds or streams, can also lead to an E Coli diagnosis.

When dealing with animals, livestock, food etc then washing your hands with clean, warm water is the easiest and most effective way of preventing any disease including E Coli.

As previously linked to, authorities and watchdogs are also able to prevent the sale of products suspected of causing the outbreak.

As well as the death of the toddler in East Dunbartonshire, a playgroup in Carnoustie, in Angus near Dundee, has also been closed after a number of children were diagnosed with E Coli.

It is understood the investigation is centred on the Peter Pan playgroup and Carlogie primary school.

Previously, a spokesman said the playgroup case could be related to the same outbreak linked with South Lanarkshire-based Errington Cheese.

However, the company on Thursday robustly responded to the ban, refuting any link between their products and the outbreak.

NHS Tayside has also set up a helpline for anyone with concerns over their child's health: 0800 028 2816.