MB C15 Self Quiz

tokia's version from 2016-04-29 04:11


Self quiz chapter 15


Question Answer
1. What is epidemiologyEpidimiology is the study of factors and mechansms in the spread of diseases in a population
2. (t/f) Quarantine is used to prevent a patient with a communicable disease from having contact with the general populationFalse


Question Answer
3. Persons in a population who become clinically ill during a specified period of timeMorbidity rate
The total number of sick individuals in a population at a particular timePrevalence rate
The colonozation and growth of an infectious agent in a hostNone of the above (incidence rate...morbidity rate...mortality rate...prevelance rate)
The number of new cases of a disease identified in a population during a defined period of timea
The number of deaths within a population during a specified period of timec


Question Answer
4. (t/f) The incidence rate can indicate whether there is an increase or decrease in the spread of a disease while the prevalence rate measures how seriously or long the disease is affecting the populationTrue
5. An infectious disease agent that is continually present in a population located in a specific geographical location but has both the number of reported cases and the severity of the disease too low to constitute a public health problem is known asEndemic
6. What is the term used when the disease with a higher than normal incidence within apopulation that poses a public health problem suddenly spreads worldwidePandemic
7. What is the term used when the morbidity and/or mortality rate in a population becomes high enough to pose a public health problemEpidemic
8. An epidemiological study focusing on cause-and-effect relationships in the occurrence of a disease in a population ad in which factors preceding an epidemic are considered is known as an _____ _____ studyAnalytical retrospective
9. An epidemiological study in which an investigator tests the hypothesis that a particular treatment will be effective in controlling a disease for which no accepted cure is available is known as a(an) _____ studyExperimental


Question Answer
10. Beacause most pathogens cannot survive for extended periods of time outside the body they must persist within _____ in order to maintain their ability to infect humansReservoirs or infection
11. Salmonella typhi has he ability to persist within the gall bladder of humans while causing no clinical symptoms. The infected individual is still contagious however abd would be considered a(an)carrier
12. Vertical transmission refers to transmission of a pathogen from a(an)Parent to offspring before or during birth
13. A disease in which a person contracts rabies virus afetr interaction with an infected raccoon would be known as a _____ diseaseZoonotic
14. All of the following are common portals of entry and exceptMucous membrane of digestive tract and milk
15. All of the following could be considered as reservoirs of infection exceptThe inside contents of a glass container containing nutrient broth that was just autoclaved for 15 minutes at 15 psi


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16. Fomitesnon living objects
Bar soapIndirect contract
Hand shakingHorizontal
HouseflyMechanical vector
Mother breast-feeding her infantVertical
Anopheles mosquitoIndirect contact
Stepping on a rusty nailIndirect contact


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17. Which of the following would not be considered a disease vectorHandkerchief
18. Which of the following are ways in which bioterrorism could be exertedAll of the above (Farm animals...cows chickens...Agricultural plants...corn and wheat...Subway system
19. Diseases that are potentially harmful to the public's health and must be reported by physicians are calledNotifiable disease
20. Hospital-acquired infections are calledNosocomial infections
21. Which of the following would not be considered a compromised hostHealthy individual


Question Answer
22. All of the following can help prevent nosocomial infection exceptPatients remaining in bed
23. The extensive use of antibiotics as well as gene transfer has led to more virulent, antibiotic-resistant strains of all the following organisms exceptInfuenza
24. Universal precautions apply to all of the following bodily fluids exceptTears


Question Answer
25. ZoonosesNaturally occuring animal disease that may be transmitted to humans accidentally
FomiteInanimate object contaminated with pathogens
Droplet nucleiDried mucus that contains potential pathogens
Exogenous infectionCaused by external microbes that enter a patient's body
Endogenous infectionCaused by opportunists in body's normal flora


Question Answer
26. Suppose that the health department of city A mounts a successful campaign to get children immunized against measles. Only 100 out of 10,000 children fail to receive the vaccine. Now suppose that city B, the same size as city A has not carried out a successful measles vaccination program. Of the 10,000 children in city B, 5,000 had measles when the disease last struck the population(a)If a child with measles moves to city A, what is the chance that child will encounter a susceptible child..100 non-immunized children divided by 10,000 total children = 1/100 or 1% chance that a child with measles coming to city A will encounter a susceptible child. (b) If a c child ith measles moves to city B, what is the chance that child will encounter a susceptible child..5000 children in city B have had measles and are presmed to now be immune form the last outbreak. This leaves 5000 susceptible children out of a total of 10,000 children or 1/2 (50%) chance that a child with measles coming to city B will encounter a susceptible child. Comparing two scenarios, which city has the higher herd immunity, and in which city is an infected child more likely to transmit the disease to a susceptible child..City A has the higher herd immunity since only 1% of their children are susceptible to measles versus 50% in city B. Since city B has the lower herd simmunity, a measles-bearing child is more likely to transmit the disease here.