Mycobacteria usually enter the body via the respiratory tract. Infection through the alimentary tract is uncommon in the UK but does occur in developing countries. Infection through the skin is a very rare occurrence.
The infection may be asymptomatic. The severity of the clinical features depend on:
The pathogenesis of tuberculosis can be described in terms of:
Reference
Tuberculosis. NICE Guideline (January 2016 - last updated September 2019)
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