ANT208H1 Lecture Notes - Lecture 8: Helminths, Horizontal Transmission, Cestoda
Document Summary
1918 flu pandemic: killed between 20 million and 100 million worldwide (compared to aprox. 25% of the population infected with 28% in the u. s. Mortality rates so high that life expectancy dropped by 12 years in 1918. Infectious disease: large category of diseases caused by microorganisms that make use of resources in an individual to mature and reproduce and in doing so provoke an immune response or otherwise disrupt functioning of that individual. Parasite: needs the resources of something else to survive. Host: the individual infected by a pathogen. Identification of pathogen in all individuals with the disease. Isolation and growth of pathogen in a pure culture o: causation of disease from the culture if introduced to another healthy individual o. Isolation and growth in culture of the pathogen from the second individual. Isolates the cause of the disease in a distinct particle that can be isolated. Environment: how it survives outside of the host.
