MICROIMM 3820A Study Guide - Comprehensive Final Exam Guide - Virus, Pathogen, Immune System

• School: Western University
• Department: Microbiology and Immunology
• Course: Microbiology and Immunology 3820A
• Professor: Kelly Summers

Document Summary

Understand how the immune system eliminates or controls pathogens that invade the human body. Why do we have an immune system: protects us from pathogenic microorganisms/pathogens that cause disease, e. g. bacteria, virus, parasite, fungi. Number of pathogens that cause serious human infections globally. Infection diseases statistics: 5000 ontarians die from infectious diseases every year. In london, we have the highest per capita rate for hep c and hiv. Streptococcus pneumoniae: hepatitis c virus, human papilloma virus (hpv, hepatitis b virus, escherichia coli (e. coli, human immunodeficiency virus (hiv/aids) Swallowing water 10-15 million microorganisms: desk more germs than the average toilet seat, top soil 40 million microorganisms. Immune system has to decide if something is a threat: cells and proteins are used to sense threats and work to minimize them. External threats: allergy (harmless, but can cause rxn/immune response) Immune system must work to keep up: one bacteria can reproduce millions of itself within 24 hours.