41.   Early symptoms are similar to the flu, including fever, headache and vomiting.

42.   Early symptoms are similar to the flu, with fever, headache or vomiting.

43.   Early symptoms are similar to those of flu, a situation that has led to many false reports.

44.   Early symptoms include loss of appetite and excessive salivating.

45.   Early symptoms in humans include fever and headache.

46.   Early symptoms include memory problems, mood changes and lack of coordination.

47.   Early symptoms of the virus are fever, headache and vomiting.

48.   Early symptoms of the virus resemble the flu, with fever, headache or vomiting.

49.   Early symptoms are similar to the flu.

50.   Early symptoms from inhalation anthrax, the most rare kind, begin with a cough but rapidly progress into severe breathing problems and shock.