Do we need both TST and pulmonary x ray to work with nonhuman primates?
Is it possible that negative in pulmonary x ray and positive in extrapulmonary TB will be contagious?
Any references or guidelines?
Hafid Soualhine
Spread of TB from Extrapulmonary TB patients were rarely reported, it was due mainly to aerosolization of abscess materials. transmission of TB from blood was also described after injuries Some extrapulmonary TB patients can still have subclinical pulmonary disease (Xray negative) TSt is not eficient for vaccinated persons Ref: J. infect. Dis 1990, 161:286-295
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Anne C Spaulding
Do remember Laryngeal TBcan be contagious, and that a patient with extrapulmonary TB can. also have Pulmonary/laryngeal tuberculosis.
Regarding Guidelines: the 2005 CDC guidelines should be accessible online.
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Aman Sharma
Purely extrapulmonary TB is rarely contagious, though some of these patients can have sub clinical pulmonary TB.
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