1.   Because mucous can contain viruses and bacteria, it can spread infections to others.

2.   But these dangerous people-they can spread the infection without knowing it-are very few indeed.

3.   Coughs and sneezes spread infections.

4.   But before people knew what was happening, many infected animals were sold to game farms or zoos in other states for breeding purposes, thus spreading the infection.

5.   But in sheep with BSE, as in scrapie, infection is spread through the body, and is more likely to be in the meat we eat.

6.   But it is unclear how often such infections are spread through blood transfusion, and many people can fight off the infections.

7.   Even though recently infected people may feel fine, their risk of spreading the infection is high, because the virus is reproducing rapidly.

8.   Even good, old dirt in your gorgeous garden can spread infections, if neighborhood critters use it as a bathroom.

9.   For each new device connected to the Internet there are dozens of new ways to spread infection.

10.   Hepatitis C infection is spread person-to-person, mainly through blood or blood products.