Tuberculosis is a chronic illness characterized by slight fever, progressive weight loss, sweating at night, and chronic cough, often productive of blood-streaked sputum.

Table 23.8 Pertussis


Runny nose followed after a number of days by spasms of violent coughing; vomiting and possible convulsions

Incubation period

7 to 21 days

Causative agent

Bordetella pertussis, a tiny Gram-negative rod


Colonization of the surfaces of the upper respiratory tract and tracheobronchial system; ciliary action slowed; toxins released by B. pertussis cause death of epithelial cells and increased cAMP; fever, excessive mucus output, and a rise in the number of lymphocytes in the bloodstream result


Inhalation of infected droplets; older children and adults have mild symptoms

Prevention and treatment

Acellular vaccines, for immunization of infants and children; erythromycin, somewhat effective if given before coughing spasms start, eliminates B. pertussis

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Bacterial Vaginosis Facts

Bacterial Vaginosis Facts

This fact sheet is designed to provide you with information on Bacterial Vaginosis. Bacterial vaginosis is an abnormal vaginal condition that is characterized by vaginal discharge and results from an overgrowth of atypical bacteria in the vagina.

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