1.   But it does not explain how the camper or campers who spread the bacteria had contracted it.

2.   Cats become infected by catching infected rodents and then spread the bacteria to humans, often through airborne infection.

3.   In areas of poverty and poor sanitation, flies are attracted to the sticky discharge, and epidemiologic studies strongly suggest that flies can also spread the bacteria.

4.   Infected cattle spread the bacteria by coughing, bellowing and snorting in the confines of a feedlot or pasture.

5.   Many cases of cholera are mild, but those infected can become carriers, spreading the bacteria through contaminated water and food.

6.   Public health officials suspect a wading pool was repeatedly contaminated by sick children, spreading the bacteria to others who ingested the water.

7.   The bacteria are spread through ingestion of water contaminated with feces or vomit from victims.

8.   The bacteria are spread through the air in respiratory droplets.

9.   The bacteria are spread by close contact or through a sneeze or a cough.

10.   The bacteria can be spread by close, prolonged contact.