Through latent class analysis, 2 recent studies evaluated the performance of the trachoma diagnostics DNA-PCR, TF (i.e., detection of clinical symptoms of TF), and TI (i.e., detection of clinical symptoms of TI) (10) as well as DNA-PCR, RNA-PCR, and TF (19) by using cross-sectional data from pretreatment and posttreatment hyperendemic areas in Ethiopia, respectively. The gene discussed is TF; the disease is inclusion conjunctivitis.