Distribution of the dhfr position 51 mutation in Africa


View map by country:

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. 

View map »

 Samples tested

 of which positive


Sites studied are shown as markers on the map beneath. Use the controls on the left of the map to pan, zoom and centre. Click on a marker to view study details and links to journals.

Map key: percentage of data set found to exhibit mutation

You can view more detailed information on this study at the foot of this page.

You must have a supported web browser, with Javascript enabled to view the map application.