Biology 2483A Lecture Notes - Lecture 1: Borrelia, Biological Agent, Herd Immunity
27 Oct 2018
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Document Summary
Infection virus, bacteria, parasite invading, growing and damaging a host. Infected species gains benefit from the host (e. g. resources for reproduction) Immune system protect against pathogen (biological agent producing a disease) Acquired immune responses learns to recognize certain infectious agents so that it can respond quickly and efficiently if said agent attempts to invade again. Epidemic disease infects increase to an unusually high number of individuals in a pop. Pandemic an epidemic that spread to multiple continents. Microorganisms too small to be seen with naked eye. Microbes take advantage of nutrient-rich environments in a host and grow/reproduce. Many organisms rely on symbiotic relationships with microbes to digest food and protect against other microbes that cause disease (pathogens) 90% of cells in body are cells of microorganisms. Rely living on or inside of hosts and benefit at the expense of the host. Use wide array of attacks against hosts (e. g. producing toxins)
