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Is XDR-TB a new phenomenon?

April 26, 2017Phenomenon

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Is XDR-TB a new phenomenon?

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• For a few years, isolated cases of very highly resistant TB that would be called extensively drug-resistant (XDR-TB) under current definitions were reported in a few different locations worldwide. Recently, regular surveys of drug resistance in an increasing number of countries and improvements in laboratory capacity have resulted in more cases of drug-resistant TB being detected. This has led to the problem being more closely examined and given a name.