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Micro Quiz 9
Terms in this set (39)
Hepatitis B and C are transmitted via the
Animal diseases transmissible to humans are known as
T/F: The hantaviruses are occasionally spread by person-to-person transmission, although exposure to infected rodent excretia is the most common route of infection
Which insect functions in the host-to-host transmission of typhus?
A person is MOST likely to contract diseases such as Rocky Mountain spotted fever and ehrlichiosis if he or she visits/participates in
camping and hiking in the backcountry
The causative agent of Lyme disease is ________, which is carried primarily by the ______
Borrelia burgdorferi / Ixodes sp. (deer tick)
A student travels to Brazil by boat on the Amazon River, without visiting the doctor prior to traveling for recommended vaccinations for travel to South America. The student becomes ill during the trip and is quarantined. Which of the diseases listed below does the student most likely have?
Which of the following would be the best strategy to prevent the spread of yellow fever and dengue fever into the southern United States?
mosquito avoidance and eradication
The causative agent of dengue fever is
In bubonic plague, buboes are swellings formed in the lymph nodes and filled with
The most severe and fatal form of anthrax is
Tetanus develops from a puncture wound because
endospores germinate in anoxic conditions
The respiratory tract has multiple systems to help protect against airborne diseases. Which of the following summarizes some of these systems?
A mucociliary blanket to remove contaminants, secretion of lysozyme and other antimicrobial chemicals, and alveolar macrophages helps protect
against airborne diseases.
Which of the following is the causal agent of gastric ulcers?
Encapsulated strains of Streptococcus pneumoniae are particularly pathogenic, because they
are potentially very invasive.
Tuberculoid Hansen's disease is caused by the pathogen
Individuals who have an active case of tuberculosis may spread the disease simply by ________ uninfected individuals.
Transmission of Mycobacterium leprae involves
both direct contact and the respiratory route.
T/F: Most viral respiratory diseases are highly contagious but not life threatening.
A frequent symptom of the common cold is
Hantaviruses are most commonly transmitted by ________ of virus-contaminated rodent _______
inhalation / excreta
Soldiers or refuges in crowded unsanitary conditions are MOST susceptible to which rickettsial disease?
Which of the following pathogens is spread by infected lice?
Controlling most rickettsial diseases involves managing
What type of diseases require biosafety level (BSL) 4 procedures and facilities when working with samples that may be infected?
highly infectious diseases with high mortality for which no treatment or vaccine exist
Many West Nile virus infections are not properly identified because
the symptoms are often subacute.
Hantavirus pulmonary syndrome is a viral respiratory disease caused by contact with
The primary disease reservoir for plague is
Control of certain diseases is nearly impossible, because we cannot
control vector and reservoir animals or eradicate organisms from the soil.
Autoimmune diseases sometimes develop shortly after an infection. This is the case with rheumatic fever. Which of the following is the most likely reason that there
is often a relationship between autoimmune disorders and infection?
Some pathogens, like the rheumatogenic strains of S. pyogenes, contain antigens that resemble normal cell surface proteins. As the immune system
responds to them, it attacks the cells with similar antigens as well.
Impetigo is due to an infection caused by
either Staphylococcus aureus or Streptococcus pyogenes
Diptheria is caused by bacteria that have been infected by a bacteriophage. This bacteriophage is a lysogenic phage and contains the genes to produce the
diphtheria toxin, which inhibits protein synthesis. Which of the following is the correct term for the phage while its genetic material is integrated into the bacterial
The genetic material is called a prophage and the change in the host cell's properties is called lysogenic conversion.
The DTaP vaccine contains
Tuberculoid Hansens disease is caused by the pathogen
Meningitis can be caused by
viral, bacterial, or fungal infections.
What disease does the human herpesvirus-1 cause?
cold sores or fever blisters
Pus formation in skin lesions caused by Staphylococcus aureus infections is in part due to production of
What type of vector can be used to spread WNV between animal and human hosts?
The mosquitoes that were present at dusk, when Peter was working near the horses.
Which of the following explains why treatment of symptomatic tetanus requires an antitoxin and an antibiotic?
Because C. tetani bacteria excrete tetanus toxin, it is important to neutralize the toxin while also killing the bacteria that are producing more
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