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Unformatted text preview: Learning Issue: Pertussis (whooping cough) Dont Miss This: Predominately infants <2. Adults and adolescents are an important reservoir of infection. Characterized by 2 week prodromal catarrhal stage of malaise, cough, coryza, and anorexia. Paroxsymal cough ending in a high pitched inspiratory whoop. Absolute lymphocytosis, often striking, culture confirm diagnosis. Definition: Bacterial respiratory infection Causes: Infection of respiratory tract by B pertussis that is transformed by respiratory droplets Risk Factors or Predisposing Factors: Under the age of 2 Epidemiology: 50% of cases occur before the age of 2 Pathophysiology: An acute infection of the respiratory tract by B pertussis that is transmitted by respiratory droplets. Incubation period is 7-17 days. Signs and Symptoms: Last about 6 weeks and divided into three consecutive stages. The catarrhal stage is characterized by its insidious onset, with lacrimation, sneezing, and coryza,...
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- Fall '10