Estimated Hiv prevalence in new TB cases, 2009 你 HIV prevalence n new TB cases 0-4 No estimate The boundaries and names shown and the designations used on this map do not imply Source the expression of any opinion whatsoever on the part of the World Health Organization Control 201 World Health concerning the legal status of any country, territory city or area or of its authorities, Organization r concerning the delimitation of its frontiers or boundaries. Dotted lines on maps represent approximate border lines for which there may not yet be full agreement O WHO 2010. All rights reserved
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Following infection, the incubation period of tb range from a few weeks to a lifetime Comstock et al. american journal of Epidemiology 99: 131-138 Fudan University ZhongshanHlespitam
Fudan University Zhongshan Hospital www.themegallery.com • Following infection, the incubation period of TB range from a few weeks to a lifetime. Comstock et al. American Journal of Epidemiology 99:131-138
B infection TB infection B infection and o risk factors and diabetes and HIv infection(a very (about 10% over a lifetime)(about 30% over a lifetime) high risk over a lifetime) For people with TB infection For people with TB infection For people with TB infection and no risk factors the risk is and diabetes the risk is 3 and HIv infection the risk is about 5% in the first 2 years times as high or about 30% about 7% to 10% PER YEAR fter infection and about 10% over a lifetime a very high risk over a over a lifetime lifetime Figure 1.6 Risk of developing TB disease over a lifetime Fudan University ZhongshanHlespitam
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Intestinal Tuberculosis Fudan University ZhongshanHlespitam
Fudan University Zhongshan Hospital www.themegallery.com Intestinal Tuberculosis
Infective route Ingestion of infected food or milk Swallowing of infected sputum from active lung disease Hematogenous spread from active pulmonary tB Direct spread from adjacent viscera Fudan University ZhongshanHlespitam
Fudan University Zhongshan Hospital www.themegallery.com Infective Route • Ingestion of infected food or milk • Swallowing of infected sputum from active lung disease • Hematogenous spread from active pulmonary TB • Direct spread from adjacent viscera