MICR 121 Lecture Notes - Lecture 5: Streptococcus Pneumoniae, Respiratory Tract, Skin Flora

52 views4 pages

Document Summary

Micr120 lecture 5: pathogen/ host interaction mechanisms of infection. Pathogen: always causes disease. e. g: neisseria gonorrhoea, ebola virus, hiv. Potential pathogen: does not always lead to disease, needs to be right time and place. E- coli: non-pathogen: the one difficult, most organisms can cause disease in the right setting. But non-pathoge(cid:374)s ge(cid:374)erals do(cid:374)(cid:859)t cause disease except in rare cases. Certain organisms live in specific sites in/on the body: bacteria are all around us. Important to examine these sites to see what defences exist that maintain the balance of normal flora and help to control the entry of pathogen. Skin generally colonized by gram positive bacteria, both (cid:271)a(cid:272)illi (cid:894)(cid:272)ory(cid:374)e(cid:271)a(cid:272)teria aka (cid:858)diptheroids(cid:859). Coryneform bacteria: common blood contaminants because they are on the skin (needle can transport it into the blood stream) Colonized by almost 109 bacteria/ ml of saliva = Treat s. aureus as if it is a(cid:374) i(cid:374)fe(cid:272)tio(cid:374) (cid:894)do(cid:374)(cid:859)t take the change)

Get access

Grade+20% off
$8 USD/m$10 USD/m
Billed $96 USD annually
Grade+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
40 Verified Answers
Class+
$8 USD/m
Billed $96 USD annually
Class+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
30 Verified Answers

Related Documents

Related Questions