BPK 140 Chapter Notes - Chapter 3: Orthomyxoviridae, Nasal Spray, Antigen

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Immune system provides complex cellular and chemical response to infecion. Immunity immunity: 4 ways to develop immunity (state in which your body can be exposed to paricular pathogen without becoming infected, fetus gets anibodies from mother through placenta; breasfed through breast milk. Transmission of communicable diseases: modes of transmission. Airborne transfer evaporated residue of human discharge (ex. sneezing) or dust can contaminate bedding, or soil, and then pathogens can be carries through airborne transfer. Vector transmission animal is intermediate carrier of the disease: chain of infecion. Infecious disease travel through human populaion through chain of infecion which involves the following steps: pathogen, human reservoir, portal (door) of exit, transmission, portal of entry, establishment of disease in a new host, non-communicable infecious disease. The tetanus pathogen is a bacterium that produces endospores, typically when the bacteria runs out of nutrients. The endospores remain dormant but get into body through puncture wound, such as stepping on rusty nail.

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