PBHL 2201 Study Guide - Midterm Guide: Fda Food Safety Modernization Act, Hepatitis A Vaccine, Giardia Lamblia

• School: Temple University
• Department: Public Health
• Course: PBHL 2201
• Professor: Gregory Benjamin

Document Summary

Infectious diseases must cause illness from a specific infectious agent or its products. The epi triangle consists of the host, environment, pathogen. Agent- is the microorganism, chemical, substance, or radiation. Host- can be the host or animal who houses the agent. Host factors- hereditary genetic factors, host resistance to infectious disease/agent. Overcrowding, sanitation, housing, geography, political/economic factors, societal customs. Virulence: is the severity of the disease produced. Note each host will vary in their responses to the agents that cause disease because of immunity. Active immunity: immunity developed from vaccine or natural infection. Passive immunity: immunities that are acquired from antibodies produced by another person or animal. Herd immunity- resistance of an entire community from an infectious agent because of vaccinations and immunity. Immunized people act as a barrier preventing the spread of id and breaking the chain of transmission. Portal of entry- where the agent enters host"s body. Portal of exit- how the agent leaves the human host.