Swimming Pool–Associated Vittaforma-Like Microsporidia Linked to Microsporidial Keratitis Outbreak, Taiwan

We analyzed 2 batches of environmental samples after a microsporidial keratoconjunctivitis outbreak in Taiwan. Results indicated a transmission route from a parking lot to a foot washing pool to a swimming pool and suggested that accumulation of mud in the foot washing pool during the rainy season might be a risk factor.