Mode of TB Transmission

Tuberculosis is transmitted mainly through the air via droplet nuclei generated when a TB patient coughs or sneezes. 

It is estimated that every bacteriologically positive patient spreads the infection to 10 – 15 persons annually, if untreated..

Figure: Transmission of TB bacteria through air via droplet

Resources:

• Technical and Operational Guidelines for TB Control in India 2016
• WHO - Fact sheet details on Tuberculosis

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