21.   Septic shock is a syndrome whereby the body is unable to fight off acute bacterial infection that may have come from surgery, accident or other event.

22.   Russian debt prices plunged amid concern President Boris Yeltsin, who is in hospital with an acute respiratory infection, may not soon recover.

23.   Surviving bacteria may cause a recurrent acute infection or a low-grade chronic sinusitis.

24.   The biology of HIV is different from other viruses, particularly those that cause acute infections, Greenberg said.

25.   The cause was an acute infection, his family said.

26.   The Interfax news agency reported today Russian President Boris Yeltsin will stay in hospital a few more days to recover from an acute respiratory infection.

27.   Yeltsin was hospitalized last week when a cold developed into an acute respiratory infection.

28.   Polio is an acute viral infection, which invades the nervous system and causes paralysis.

29.   Cholera is an acute bacterial infection of the small intestine characterized by severe dehydration and diarrhea.

30.   Cholera, an acute intestinal infection, causes vomiting and severe diarrhea.