Cryptosporidium
Cryptosporidium, sometimes called crypto, is an apicomplexan genus of alveolates which are parasites that can cause a respiratory and gastrointestinal illness that primarily involves watery diarrhea, sometimes with a persistent cough. Wikipedia
Scientific name: Cryptosporidium
Lower classifications: Cryptosporidium parvum and Cryptosporidium hominis
Diseases or conditions caused: Cryptosporidiosis