Judging a ‘clean face’ for trachoma

Part of the control strategy for trachoma — repeated eye infections caused by the bacterium Chlamydia trachomatis — is facial cleanliness. Now, researchers have shown that properly trained graders can reliably reproduce assessments of facial cleanliness. The findings suggest that measures of facial cleanliness can be added to trachoma surveys in the developing countries where the infection is a public health problem.