Gallstone diseases are old disease entities, it yet remains the most prevalent disease affecting the biliary system. 摘要膽石症雖然是一個古老疾病，但仍然是膽道疾病中最常見。
Cryptosporidium is an intracellular parasitic protozoan that can cause severe disease in a wide variety of young animals, children and immunocompromised persons. 摘要隱孢子蟲是一種重要的人獸共患寄生性原蟲，可引起兒童和免疫低下人群以及幼齡動物發生嚴重胃腸道疾病。
