HLTH101 Lecture Notes - Lecture 19: Toxic Shock Syndrome, Meningitis, Haemophilus Influenzae
1 Aug 2016
School
Department
Course
Professor
Document Summary
Worldwide, infectious diseases are responsible for more than 11 million deaths each year. Most prevalent (highest number of deaths per year) = pneumonia, hiv/aids, Pathogens include bacteria, viruses, fungi, protozoa, parasitic worms, and prions. Classified according to shape (4): bacilli (rod shaped, cocci (spherical, spirochete (spiral shaped, vibrios (comma shaped) Can be helpful or harmful to human health. Sometimes cells have cell walls and even capsule on top of that for protection! Microbes occupy all of our body surfaces skin, gut, mucous membranes. Human body may contain 10x more bacterial cells than human! Beneficial roles in gut: prevention of colonization by disease-causing bacteria (prevent pathogens from taking over, break down food, glucocorticoid production (synthesis) = one of the most difficult to kill even with antibiotics. Straight poop - bacteria shed from the intestine, makes up most of poop. Bacteria can harbour small circular pieces of dna (plasmid) with genes that confer (grant) antibiotic resistance*
