noun
giardiasis
Medical term for infection by the protozoan Giardia lamblia, often causing diarrhea and abdominal discomfort.
海外旅行から帰国後、ランブル鞭毛虫症と診断された。
After returning from overseas travel, I was diagnosed with giardiasis.
From the genus name Lambl (named after Vilém Dušan Lambl) + 鞭毛虫 (flagellate) + 症 (disease).