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. 1982 Oct;89(2):235–242. doi: 10.1017/s0022172400070765

Subdivision of Mycobacterium tuberculosis into five variants for epidemiological purposes: methods and nomenclature.

C H Collins, M D Yates, J M Grange
PMCID: PMC2134208  PMID: 6813376

Abstract

Virulent strains of Mycobacterium tuberculosis isolated from humans are divisible into five variants by using four tests: oxygen requirement (aerobic or microaerophilic), nitrate reductase activity, susceptibility to pyrazinamide (60 micrograms/ml) and susceptibility to thiophene-2-carboxylic acid hydrazide (5 micrograms/ml). The five variants are referred to as Classical human, Asian human, bovine, African I and African II. The relation of these variants to previously described types is discussed. This simple division has been shown to be useful in epidemiological studies.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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