Seasonality of active tuberculosis notification from 2005 to 2014 in Xinjiang, China.

Although there was an increasing trend of active TB notification since 2011, it was mainly caused by the increase of sputum smear-negative TB cases; the leading infection source sputum-smear positive TB cases were consistently decreasing since 2006 according to our previous study [ 25 ].

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Lastly, the SA had a decreasing trend from 2005 to 2014, which coincided with the downward trend of TB notification.

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Uygur ethnic group, a high TB-risk population, had greater seasonality of TB than others; however, these differences failed to reach statistical significance.

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