About the Authors

Khumbo Kalua

khumbokalua@yahoo.com

Affiliations Department of Ophthalmology, College of Medicine, University of Malawi, Blantyre, Malawi, London School of Hygiene and Tropical Medicine, London, United Kingdom

Tobias Chirwa

Affiliation Department of Mathematics and Statistics, Chancellor College, University of Malawi, Zomba, Malawi

Linda Kalilani

Affiliation Research Support Centre, College of Medicine, University of Malawi, Blantyre, Malawi

Sam Abbenyi

Affiliation International Trachoma Initiative (ITI), New York, New York, United States of America

Mavuto Mukaka

Affiliation Malawi Liverpool Wellcome Trust (MLWT), College of Medicine, Blantyre, Malawi

Robin Bailey

Affiliation London School of Hygiene and Tropical Medicine, London, United Kingdom

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: KK TC LK SA RLB. Performed the experiments: KK. Analyzed the data: KK LK MM. Contributed reagents/materials/analysis tools: KK TC LK. Wrote the paper: KK TC RLB.