Distribution of the dhfr position 51 mutation in Africa

 

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The prevalence of the 51I mutation of the dhfr gene in Africa 

We identified 117 publications describing 251 surveys in 154 unique study sites in 36 African countries. Of the 23,754 isolates tested 51I was detected in 15,706 (66%) at sites all across the continent. 

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 Samples tested

 of which positive

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Map key: percentage of data set found to exhibit mutation

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