BSCI 223 Study Guide - Quiz Guide: Streptococcus Pneumoniae, Opportunistic Infection, Streptococcus
19 Apr 2016
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Case study 3: wanda"s woes: what are federica"s symptoms, disease: tissue damage, shift from normal . Pneumococci are common inhabitants of the respiratory tract and may be isolated from the nasopharynx of 5% to 70% of healthy adults. Rates of asymptomatic carriage vary with age, environment, and the presence of upper respiratory infections. Only 5% 10% of adults without children are carriers. In schools and orphanages, 27% 58% of students and residents may be carriers. On military installations, as many as 50% 60% of service personnel may be carriers. The duration of carriage varies and is generally longer in children than adults. In addition, the relationship of carriage to the development of natural immunity is poorly understood. Pathology: inflammation of ear canal, infection generally follows some predisposing condition. Transmission: naso-pharyngeal colonization opportunistic infection resulting from blockage of ear canal. 1st layer: barriers: skin & mucous- nonspecific defences, innate immunity . Cells: epithelial cells have high turnover, some have tlrs.
