Fig. 2

Demonstrative images of children with diarrhoea who consulted the Hospital San Juan de Dios de Armenia, showing the presence of Cryptosporidium spp. oocysts (arrows) in stool samples. A. Direct visualization at a 40X objective, with a micrometer rule included for scale. B. Ziehl-Neelsen (ZN) staining at 100X objective, highlighting Cryptosporidium spp. oocysts