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How Is TB Transmitted ?

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Global <strong>TB</strong> Burden by Mtb Lineage<br />

Estimated number of prevalent cases in 2003 (WHO 2005)<br />

6<br />

5<br />

4<br />

3<br />

Whole-genome sequences:<br />

H37Rv (Sanger)<br />

CDC1551 (TIGR)<br />

F11 (Broad)<br />

C (Broad)<br />

Haarlem (Broad)<br />

210 (TIGR)<br />

2<br />

1<br />

0<br />

E & SE -Asia<br />

Indian<br />

sub-continent<br />

Sub-Saharan<br />

Africa<br />

C-Asia /<br />

Russia<br />

Americas<br />

Europe<br />

N-Africa<br />

Middle East<br />

Gagneux & Small Lancet ID 2007<br />

Number of cases (millions)

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