NSG 3315 Lecture Notes - Lecture 10: Syphilis, Sepsis, Microbiota
Document Summary
Infection or colonization means that microorganisms are multiplying in or on the host. Over 300 different species of bacteria live in the large intestine. They mouth and pharynx contain many species of bacteria. Microflora:are microorganisms normally living in or on your body. Pathogens are microorganisms that are capable of causing infectious disease. All are capable of causing disease if immune system is de cient. The health of the host: host - organisms that can meet the nutritional and physical requirements of another organisms (humans) Virulence of the pathogen: virulence - potential of the pathogen to cause disease. !1 transmitted through, injection or contaminated food or tissue. Bacteria: cells without membrane - bound organelles (prokaryotes) can live independently use infected organism for food and shelter can cause toxins. Type 2 - spirochete leptospira - transferred to humans by infected animals borrelia - transferred via limes or ticks; lymes disease treponema - human to human by direct contact example - syphilis.
