41.   When the bacteria are actively causing disease, current drugs can kill them.

42.   While influenza is a virus, it can lead to a secondary infection, pneumonia, caused by bacteria.

43.   While influenza is caused by a virus, it can lead to a secondary infection, pneumonia, caused by bacteria.

44.   When ingested, Listeria bacteria can cause illness and death among the elderly, pregnant women, newborns and those with weakened immune systems.

45.   Periodontitis, advanced gum disease that destroys the tissue and bone surrounding the teeth, is generally caused by bacteria contained in plaque buildup.

46.   Pneumococcal bacteria cause half a million cases of pneumonia each year, plus infections in the brain, ear and other organs.

47.   Pneumococcal bacteria cause one-third to one-half of all U.S. cases of middle ear inflammation, Schwartz said.

48.   At least three cases of cholera, an infectious, intestinal disease caused by bacteria, have been reported this year in neighboring Russia.

49.   Bacteria can also cause it, but vaccinations have made that form of meningitis rare.

50.   Botulism is a kind of food poisoning, usually caused by bacteria in improperly canned food.