Microbiology and Immunology 3820A Study Guide - Final Guide: Pinworm Infection, Myocarditis, Plasmodium
22 Dec 2016
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Get sore where initially bite, regional edema and then regional cervical lymph nodes. Soft foul stools, flatus, bloating, gurgling, weight loss, fatigue. Colon ulceration, lead to systemic spread abscesses. Dx by microscopy of stool, need three negative. Differentiated from ^ by rapid stool antigen test. Tachyzoite is active form causing tissue damage and inflammation. House cat ova in cat feces needs time to embryonate and become infectious. Kissing bug bite near eye and rub feces around. Females migrate to perianal skin and lay eggs. Females produce eggs which become effective in soil in 2-3 weeks. Make way into blood stream, to lungs, coughed up and swallowed, latch onto microvilli, suck blood. Migrate to bile duct (jaundice), appendix, out anus, stomach to esophagus. Intestinal phase asymptomatic, may be coughed up, vomited, nose or anus. Most asymptomatic, depends on burden and stage of worm. Pulmonary migration through lung produces cough, wheezing, transient pulmonary infiltrates.
