Question

n the United States, _________ is a protozoan flagellate most common among those who travel to endemic areas, in homosexuals, and in child day care settings where constant diaper changing facilitates the spread from one child to another.

Answer 1

Answer:

Giardia lamblia

Explanation:

   Giardia lamblia, a flagellated protozoan that exists in the form of cyst and  trophozoite. The cyst is the infective form found in the environment.

    Protozoan infection mainly affects the upper portion  of the small intestine. Most infections are asymptomatic and occur  in both adults and children. Symptomatic infection may present with diarrhea, accompanied by abdominal pain. This condition may be chronic in nature, characterized by softened  with fat aspect, accompanied by fatigue, anorexia, flatulence and  abdominal distension. Anorexia, associated with malabsorption, can lead to weight loss and anemia.

   The transmission can be due fecal-oral. Direct, by contamination of the hands and consequent ingestion  of existing cysts in infected person waste; or indirectly through  ingestion of contaminated water or food.