The common cold is a virus that infects the upper respiratory tract. There are over 100 viruses that can cause the common cold. These viruses are very contagious and exist throughout all four seasons.
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Pinworms are tiny (5 to 13 millimetres), thread-like, white worms that can live in the colon and rectum of humans. They are very common in children. Pinworms are not dangerous.
Yersiniosis (yer-sin-ee-o-sis) is an infection caused by the bacteria Yersinia. Yersinia is a strong bacteria that can continue to live in environments without much oxygen and in refrigeration. One common source of infection can be contaminated food such as raw or undercooked pork.
Germs carried by people are one of the major sources of food-borne illness.
Here is what you can do to stop the spread of germs:
Escherichia coli, also called E. coli, are bacteria that are often found in the intestines of people and animals. There are different types of E. coli. Some types of E. coli are not harmful, but others like E. coli O157:H7, can make some people very sick. Usually illness is caused by eating contaminated food or water, having contact with someone who is sick with the bacteria, or animals that carry it.