HSS 1100 Lecture Notes - Lecture 9: Lymphadenopathy, Encephalitis, Hospital-Acquired Infection

• School: University of Ottawa
• Department: Health Sciences
• Course: HSS 1100
• Professor: Franco Pagotto

Document Summary

Intimate and obligatory symbiotic relationship between two organisms of different species: greek term for. Parasite is metabolically and physiologically dependent on host. Very common way of life (50% of animal species) (cid:862)t(cid:396)ue pa(cid:396)asites(cid:863) i(cid:374)(cid:272)lude p(cid:396)otozoa(cid:374)s (cid:894)single-celled), helminths (worms), and arthropods (ectoparasites) Host: organism which is the home and or food source for parasite. Vector: how parasite gets from host to host. Intermediate host: secondary home, like a condo in florida for the winter months (cid:862) uccess(cid:863) of parasites defi(cid:374)ed i(cid:374) ter(cid:373)s of: G. duodenalis, g. intestinalis) most common in the world. History: first described by leeuwenhoek in 1681: De(cid:373)o(cid:374)st(cid:396)ated to (cid:271)e a t(cid:396)ue pathoge(cid:374) i(cid:374) the ea(cid:396)ly (cid:1005)9(cid:1004)(cid:1004)"s. Symptoms: most infections are asymptomatic (carriers, acute giardiasis: diarrhea, weight loss, abdominal discomfort, nausea, vomiting, retardation of growth and development in young children (failure to thrive) Life cycle of all parasites: excystation, trophozoites in small intestine, longitudinal binary fission, encystation, cysts shed with faeces.