Chapter 1, Problem 2SEPT

In dental, CDC recommends that at least one person on the dental staff is assigned to be responsible for   a. Monitoring infection control compliance among staff   b. Ensuring all personnel are properly vaccinated   c. Coordinating the infection control program   d. Overseeing all instrument processing protocol

(a) Describe how a microorganism may become resistant to a drug to which it was previously susceptible. (b) What can health care workers do to help prevent the development of drug resistant microbes? (c) What can you do on a personal level to help prevent the development of drug resistant microbes? 2.

Foodborne pathogens often require the presence of a large number of microbes before an active infection results. These microbes would have a high A.) median infectious dose (ID50). B.) incubation period. C.) virulence. D.) median lethal dose (LD50). E.) mortality.

Which of the following statements is correct?   a. An individual who has been diagnosed with a communicable disease and those who may have been exposed to the infection are to be placed together in a unit away from others   b. Serial interval is the interval between when an infectious agent invades a body and when the first sign or symptom appears   c. Isolation should be maintained through the incubation period of a disease   d. Healthy asymptomatic individuals suspected to have been exposed to an infection are quarantined through the length of the incubation period

Which of the following statements is incorrect? a. Mucosal surfaces are better than skin surfaces at supporting colonization by commensal microorganisms. b. The skin provides a larger surface area than mucosal surfaces for commensal microorganisms. c. There are ten times as many bacteria residing in the intestinal tract than the number of cells in the human body. d. It is common for commensal bacteria to live in symbiosis with their human hosts. e. During gestation in mammals, a fetus does not have any commensal microorganisms on their skin or mucosal surfaces.

Fill-in-the-Blank   Antibiotics that retard the growth of bacteria are called __________ agents.   Medications applied to the skin or into external body structures, such as the ear or         eye, are commonly called ____________ agents.   Topical agents designed to be absorbed through the skin for systemic effects are    commonly called ____________ medications.      Ophthalmic preparations used to dilate pupils during physical examination of the eye are commonly called  ___________.                   ­­­­­­­­­­­_______________, a pregnancy category C agent, is a potent vasodilator that has long been the treatment of choice for acute angina pectoris.

B. Scientific Activity You are a Scientific Officer of the Centers for Disease Control (CDC), your Department monitors the use of antibiotics in hospitals and pharmacies across the entire of the United States, and you notice a spike (increase) in penicillin resistance (drug not effective in patients) in the treatment of bacterial diseases; 4a. What do you think is happening? 1 4b. What remedy/countermeasures do you propose?

Which of the following is not a factor that should be considered when selecting a antimicrobial drug? A.  The nature of the microbe causing the infection B. The overall medical condition of the patient C. The origin of the drug D. The degree of susceptibility of the microbe to that drug

the following are the steps, listed in random order, for utilizing koch's postulates. what should be the second step out of the four listed? a. a microorganism is found to be present in every case of a disease. b. the same microbe discovered previously is isolated from the purposely infected host c. the pathogen is isolated and grown in pure culture d. the same disease results after isolated organism is inoculated into healthy host