NDAEB - domain part 3 with complete solutions 2024/2025

NDAEB - domain part 3 with complete solutions 2024/2025 chain of infection 1. infectious agent 2. reservoir 3. portal of exit 4. mode of transmission 5. portal of entry 6. susceptible host infectious agent >pathogen must be present and virulent virulence strength or ability of a pathogen to produce disease reservoir place where microorganisms live and reproduce portal of entry airborne pathogens: through mouth and nose blood-borne pathogen: access to blood (cut, bite, etc) types of infections >acute >chronic >latent >opportunistic acute infection short duration, severe chronic infection long duration, could be for life latent infection persistent with symptoms that come and go opportunistic infection occurs in individuals whose resistance is decreased/compromised (someone recovering from influenza) modes of disease transmission >direct >indirect >airborne >aerosol, spray, or spatter >parenteral >blood-borne >food and water >fecal-oral direct transmission person to person contact (coughing/sneezing) indirect transmission microorganism transmitted to object/surface and then person airborne transmission spread of disease through droplets of moisture aerosol transmission generated during dental treatment and can contain blood, saliva and nasal secretions parenteral transmission through the skin, as with cuts or punctures blood-borne transmission spread of disease via blood or body fluids food and water transmission occurs when contaminated food that has not been cooked or refrigerated properly or water that has been contaminated with human or animal fecal material is consumed fecal-oral transmission spread of disease when you don't wash your hands after pooping naturally acquired immunity occurs when a person has previously contracted a disease and recovered artificially acquired immunity immunity that results from a vaccination what is the most common route of contamination direct transmission what type of an infection transmission occurs through mucosal tissues droplet infection what is the purpose of BBP to protect employees from exposure to blood-borne disease cause organisms