1.   A bite from a tick that carries the bacteria can pass the disease on to humans.

2.   A person gets Lyme disease by being bitten by a tick carrying the bacterium that causes it, a spirochete called Borrelia burgdorferi.

3.   But growth in the population of white-tailed deer, which carry the bacteria, also may account for more cases, he said.

4.   Cholera spreads quickly when water and food are contaminated by those who carry the bacteria, and in its most severe form it can kill within a day.

5.   Dairy cows and other cattle seem to be the Typhoid Marys of the epidemics, carrying the bacteria harmlessly in their feces.

6.   Forty percent of the cattle at a Texas slaughterhouse that Vinetz surveyed recently were carrying the bacteria.

7.   He stopped within five feet so he would not carry bacteria to other trees.

8.   It is unclear how ticks become infected, but up to a third of the ticks in some areas carry the bacterium.

9.   Listeria monocytogenes, a bacterium carried by animals, can contaminate animal products like meat and milk, and it affects people with weakened immune systems.

10.   Lyme disease is usually transmitted through the bite of deer ticks, which carry the bacteria.