Overview 1, 2, 3, 4, 5 Pertussis is a highly communicable, vaccine-preventable disease that affects the respiratory tract. The illness is caused by Bordetella pertussis (B. pertussis) bacteria, for which humans are the only known natural reservoir.verview 1, 2, 3, 4, 5 Pertussis is a highly communicable, vaccine-preventable disease that affects the respiratory tract. The illness is caused by Bordetella pertussis (B. pertussis) bacteria, for which humans are the only known natural reservoir.
Often, cramps. 1  a sudden, involuntary, spasmodic contraction of a muscle or group of muscles, especially of the extremities, sometimes with severe pain. 2  a piercing pain in the abdomen.
Spasms are uncontrolled, repetitive contractions of a muscle. Spasms may occur in any muscle in your body, such as those in your face, fingers or calves. Spasms can be brief or long lasting, uncomfortable or painful. A spasm may also be referred to as a muscle cramp. Leg cramps, sometimes called charley horses, are sudden and uncontrollable muscle contractions or spasms.