Question | Answer |
A pathological condition of body parts or tissues with identifiable signs and symptoms | disease |
disease caused by an infectious agents such as bacteria, virus, protozoan or fungus | infectious disease |
occurs when infectious agent enters body and begins to reproduce | infection |
term for an infectious agent that causes disease | pathogen |
organism infected by an infectious agent | host |
the relative ability of an infectious agent to cause rapid and severe disease in a host is called | virulence |
the degree of resistance a host has to a particular infectious agent | immunity |
What fraction of deaths world wide are caused by infectious disease | 1/4 to 1/3 |
what accounts for 1/2 of all deaths of children under 5 | infectious disease |
what are the top killer infectious disease in the world | HIV/AIDS, TB, Malaria, |
incubation period | time between infection and appearance of signs and symptoms |
Prodromal phase | mild nonspecific symptoms signaling onset of disease |
point of disease when host experiences typical signs and symptoms essentially feels like crap | clinical phase |
Phase when signs and symptoms start to subside | decline phase |
recovery phase | symptoms have disappeared and the patient begins to recover |
Acute disease | develops and runs course quickly |
Chronic disease | develops slowly and is usually less severe but can last for a long time |
Latent disease | alternates between periods of infection and times with no disease apparent |
infection contained to specific area of the body | local infection |
generalized illness affecting most parts of the body | systemic |
initial infection in a previously healthy individual | primary infection |
infection that occurs in a person weakened by a primary infection | secondary infection |
How do infectious agents cause disease | production of poisons (enzymes or toxins that destroy cells or tissues
direct invasion and destruction of host cells
triggering host immune system which leads to disease's signs and symptoms |
Remember that personal characteristics provide chink in host's armor to allow disease | ok |
What disease thrives on malnutrition and alcoholism | TB |
Disease that takes advantage of dirt and body hair | staph aureus |
flourishes with testosterone and hormonal changes especially in teenagers | propionibacterium acne |
likes it when we don't dry between our toes | atheletes foot |
What infection thrive when antibiotics kill off microbiological competitors | Candida and C difficile, and ecoli staph epidermidis |
do diseases run the same course in all individuals | no most disease are different for people some people get deathly ill while others hardly get sick at all |
what is the likelihood that you will get infected with rabies or plague if exposed | 100% |