QUESTIONS AND SOLUTIONS GRADED A PLUS
CLINICAL CASE STUDY GUIDE
◉ Using the table located in the upper right-hand corner of page 735
of the MMW Report, the decrease in the percentage of severe rat
infestations between Indexing Round 1 and Indexing Round 2 was.
Answer: 0.21
◉ Regarding New York City's rat control program: In a similar rat-
control program initiated in Baltimore, Baltimore found that a
decrease in the prevalence of rat infestation could be achieved, but
the results were largely attributable to.
Answer: a government-subsidized baiting program
◉ If New York City public health officials had elected to monitor the
incidence of disease attributable to Rattus norvegicus for the time
period December 2007-August 2009, they would need to know the
number of individuals at risk as well as.
Answer: the number of new events (cases of disease due to rat
infestation) during the time period December 2007-August 2009
◉ The population of the Bronx according to the 2010 United States
Census is approximately 1,400,800. Assume 500,000 of the
,individuals living in this area are considered "at risk" for disease
transmitted by the Norway rat. If 500 existing cases of rat-
transmitted disease were noted on November 17, 2008, what is the
point prevalence for the disease?.
Answer: 1 in 1000
◉ In the report regarding the Chikungunya outbreak in Cambodia,
the pathogen is.
Answer: a virus
◉ The spread of disease during the Chikungunya outbreak in
Cambodia between February 2012 and March 2012 was due to.
Answer: vector-borne transmission of the pathogen
◉ Referring to the table at the top of page 738 of the CDC MMW
Report, what percentage of the total population of Trapeang Roka,
Cambodia during the study period complained of having all three
symptoms of the disease?.
Answer: 38.3%
◉ Referring to Figure 1 at the top of page 739 of the CDC MMW
Report, the number of persons reporting onset of fever among the
village residents of Trapeang Roka, Cambodia during the study
period was highest on approximately.
Answer: March 18, 2012
, ◉ The main public health implication of the report on Vaccine-
Derived Polioviruses (VDPVs) is that.
Answer: the circulation of VDPVs most likely represents low
poliovirus vaccine coverage
◉ The ability of the polio virus to cause disease is known as its.
Answer: pathogenicity
◉ Referring to the table at the top of page 745 of the CDC MMW
Report, the date of the last outbreak case, last patient isolate, or last
environmental sample of the polio virus in Peru was.
Answer: April 11, 2011
◉ In the report titled Histoplasmosis Outbreak Among Day Camp
Attendees — Nebraska, June 2012, the pathogen responsible for the
disease is.
Answer: fungal
◉ The route of transmission of Histoplasmosis is typically.
Answer: inhalation of soil contaminated with bird or bat droppings
◉ A confirmed case of histoplasmosis was defined as a.