Download Chapter 11 – Preventing Infectious Diseases

Chapter 11 – Preventing Infectious Diseases
Multiple Choice
1.
The general term for a disease-causing agent is
A)
virus.
B)
infection.
C)
pathogen.
D)
bacterium.
Answer:
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2.
The general term for the environment in which an infectious agent grows and thrives is its
A)
reservoir.
B)
incubator.
C)
natural state.
D)
dormant state.
Answer:
Page:
3.
C
277
Tuesday afternoon you began to feel sick. Wednesday you were sick in bed all day. Thursday
you felt better. Your time in bed Wednesday probably marked the __________ stage of the
infection.
A)
clinical
B)
recovery
C)
incubation
D)
prodromal
Answer:
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6.
B
277
In the context of infectious diseases, what is a vector?
A)
the connection between any two links in the chain of infection
B)
a primitive one-celled organism that causes disease in humans
C)
a living organism that serves as a mode of transmission for a pathogen
D)
the substance released by an infectious agent that causes symptoms in humans
Answer:
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5.
A
277
Which of the following is NOT a form of direct transmission?
A)
kissing
B)
drinking from a friend’s water glass
C)
breathing in someone’s sneeze
D)
sexual intercourse
Answer:
Page:
4.
C
276
A
279
The stage of infection from the time a pathogen enters your body until symptoms appear is known
as the _______________ stage.
A)
clinical
B)
C)
D)
recovery
incubation
prodromal
Answer:
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7.
An example of your body’s so-called first line of defense against infections would be
A)
T-cells.
B)
skin.
C)
antigens.
D)
antibodies.
Answer:
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8.
D
280
The role of antibodies is to
A)
produce helper T-cells.
B)
aid in the formation of killer T-cells.
C)
destroy antigens and their toxins.
D)
destroy suppressor T-cells.
Answer:
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12.
C
280
Natural immunity is acquired by
A)
receiving an immunization.
B)
preventing an infection from occurring.
C)
receiving antibodies from another host.
D)
experiencing and recovering from a disease.
Answer:
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11.
B
279
The immunity you get from a vaccination is acquired
A)
actively.
B)
passively.
C)
artificially.
D)
nonspecifically.
Answer:
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10.
B
279
Which of the following terms is applied to any foreign substance that stimulates a response from
the immune system?
A)
toxin
B)
antigen
C)
microbe
D)
bacterium
Answer:
Page:
9.
C
278
C
280-281
Macrophages are a form of
A)
B)
C)
D)
stem cells.
helper T-cells.
antibodies.
white blood cells.
Answer:
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13.
Which of the following has a responsibility to “turn off” the immune response?
A)
T-helper cells
B)
T-suppressor cells
C)
T-memory cells
D)
T-killer cells
Answer:
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14.
Which
fetus?
A)
B)
C)
D)
D
282
of the following, if contracted during pregnancy, can cause damage to the developing
rubella
whooping cough
polio
tetanus
Answer:
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17.
D
282
Today, health professionals are attempting to raise the level of immunization to ______ percent
of all children under the age of two.
A)
40
B)
60
C)
80
D)
90
Answer:
Page:
16.
B
281
Which of the following BEST explains why stem cells are transplanted into people with damaged
immune systems?
A)
The patients’ own stem cells are used up.
B)
They are the most potent type of immune cell.
C)
Stem cells are specialized for restoring immune functions.
D)
Stem cells are absent of specialization and can develop into new immune system cells.
Answer:
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15.
D
281
A
282
A potentially fatal illness that leads to the inflammation of the membranes that line the throat,
swollen lymph nodes, and to heart and kidney failure is
A)
chicken pox.
B)
mumps.
C)
diphtheria.
D)
rubella.
Answer:
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18.
Adults are particularly underprotected in regard to
A)
hepatitis and polio.
B)
tetanus and diphtheria.
C)
haemophilus influenzae type B.
D)
chicken pox and mumps.
Answer:
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19.
A
285
The portal of entry for influenza is
A)
the respiratory system.
B)
the digestive tract.
C)
breaks in the skin.
D)
body fluids.
Answer:
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23.
B
284
To avoid catching another cold, which of the following will be the MOST useful strategy?
A)
Wash your hands periodically when you are with groups of people.
B)
Take extra vitamin C and herbal supplements.
C)
Wear a mask when you go out in public.
D)
Exercise for thirty minutes daily.
Answer:
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22.
C
284
A type of infection spread in conjunction with the delivery of health care services is termed
______________________ infection.
A)
non-specific
B)
nosocomial
C)
non-institutional
D)
non-medical
Answer:
Page:
21.
B
283
Another name for the common cold is
A)
influenza.
B)
pandemia.
C)
acute rhinitis.
D)
congestive bronchitis.
Answer:
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20.
C
282
A
285
The most common approach to treating influenza is to
A)
receive antiviral shots.
B)
treat the symptoms.
C)
take antibiotics.
D)
avoid infection.
Answer:
Pages:
24.
Today, Suzanne began experiencing painful urination and the frequent, sudden need to urinate.
She probably has
A)
syphilis.
B)
gonorrhea.
C)
a yeast infection.
D)
a urinary tract infection.
Answer:
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25.
D
287
Who of the following, when exposed to tuberculosis, is NOT likely to infect others?
A)
an older adult
B)
someone infected with HIV
C)
a malnourished individual
D)
a healthy individual
Answer:
Page:
29.
C
287
Of the following, the greatest current threat from tuberculosis in the United States comes from
A)
virulent strains.
B)
poor treatments.
C)
secondary infections.
D)
drug-resistant strains.
Answer:
Page:
28.
A
287
The mode of transmission for tuberculosis is
A)
direct transmission.
B)
vector-based transmission.
C)
droplet spread.
D)
fecal–oral transmission.
Answer:
Page:
27.
D
302
Tuberculosis is a
A)
bacterial lung infection that creates a chronic cough and endangers health.
B)
viral lung infection marked by serious flares, when breathing is extremely difficult.
C)
rapid and dangerous atrophy of lung tissues that is caused by invasive microorganisms.
D)
general suppression of the immune system that results in frequent lung infections.
Answer:
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26.
B
285-286
D
287
The standard treatment for mononucleosis is
A)
rest.
B)
antibiotics.
C)
physical therapy.
D)
corticosteroid drugs.
Answer:
Page:
30.
Fatigue that lasts for weeks and months in the absence of other symptoms is characteristic of
A)
pneumonia.
B)
tuberculosis.
C)
Lyme disease.
D)
mononucleosis.
Answer:
Page:
31.
A
289
The transmission of bacterial meningitis is NOT caused by
A)
sharing a beverage.
B)
close living quarters.
C)
kissing.
D)
unprotected sexual intercourse.
Answer:
Page:
35.
B
288
You have just taken your roommate to the hospital. She came down with what appeared to be flu
two days ago, but you suspected meningitis when she complained of
A)
a severe headache and stiff neck.
B)
fatigue and lack of appetite.
C)
body aches and chills.
D)
nausea.
Answer:
Page:
34.
A
287
Which of the following is FALSE regarding chronic fatigue syndrome? It is an illness
A)
that causes severe exhaustion and fatigue.
B)
most often seen in men in their thirties and forties.
C)
that causes confusion over its exact nature.
D)
that causes headaches and an inability to concentrate.
Answer:
Page:
33.
D
288
Which of the following is the MOST common form of pneumonia?
A)
bacterial
B)
viral
C)
fungal
D)
parasitic
Answer:
Page:
32.
A
288
D
288
The mode of transmission for Lyme disease is
A)
vector-based.
B)
personal contact.
C)
D)
airborne particles.
exchange of body fluids.
Answer:
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36.
Which of the following is the BEST defense against Lyme disease?
A)
Wash hands thoroughly.
B)
Avoid sharing of eating utensils.
C)
Stay away from people who have the disease.
D)
Check yourself thoroughly for ticks after being outdoors.
Answer:
Page:
37.
C
290
Which of the following is an acute infection of the lungs that progresses rapidly and often kills
the victim?
A)
hepatitis
B)
Lyme disease
C)
toxic shock syndrome
D)
hantavirus pulmonary syndrome
Answer:
Page:
40.
C
290
You went hiking in the morning and, in the evening, you find that a deer tick has attached itself to
your ankle. You remove it. What should you do now?
A)
Seek antibiotic therapy at once.
B)
Send the tick to your doctor for laboratory analysis.
C)
Wash the bite and wait for the appearance of clinical symptoms.
D)
Get immunized for Lyme disease within the next three weeks.
Answer:
Page:
39.
D
290
Which phase of Lyme disease may produce disorders of the heart and nervous systems?
A)
acute phase
B)
lasting phase
C)
chronic phase
D)
recovery phase
Answer:
Page:
38.
A
290
D
290
You are cleaning your garage when you find a place where deer mice have nested. You are
aware that they carry hantavirus, so your best option is to
A)
leave the nest undisturbed.
B)
soak the nest with disinfectant or bleach before removing and destroying it.
C)
first probe to see if the mice are gone, then immediately throw the nest away.
D)
carefully salvage as much of the nest as you can and send it to a state lab for analysis.
Answer:
Page:
B
290
41.
The West Nile virus is transmitted to humans via
A)
birds.
B)
mosquitoes.
C)
deer ticks.
D)
deer mice.
Answer:
Page:
42.
In the vagina, toxic shock syndrome occurs when
A)
bacteria that enter tampons during their manufacture penetrate the body’s defenses.
B)
certain staphylococcal bacteria invade the bloodstream through the vaginal wall.
C)
super absorbent tampons cause shock by absorbing blood too rapidly.
D)
sexually transmitted pathogens penetrate the vaginal wall.
Answer:
Page:
43.
D
291
Hepatitis B and C are spread when the virus is introduced directly into
A)
the ear.
B)
body fluids.
C)
the digestive tract.
D)
the respiratory system.
Answer:
Pages:
46.
A
291
Hepatitis is a viral inflammation of the
A)
pancreas.
B)
intestines.
C)
kidneys.
D)
liver.
Answer:
Page:
45.
B
291
Toxic shock syndrome is most strongly linked to the use of
A)
super absorbent tampons.
B)
light duty tampons.
C)
sanitary napkins.
D)
all tampons.
Answer:
Page:
44.
B
290
B
292
Most HIV infections occur through the exchange of blood, semen, or
A)
tears.
B)
saliva.
C)
sweat.
D)
vaginal secretions.
Answer:
Page:
D
293
47.
The average incubation period for HIV infections (the time between infection and the appearance
of symptoms) is about
A)
six to twelve months.
B)
two to six years.
C)
six to eight years.
D)
ten to twelve years.
Answer:
Page:
48.
Many people are concerned that there is a relationship between the development of autism and
which childhood immunization?
A)
DTaP
B)
Varicella
C)
MMRP
D)
HepA
Answer:
Page:
49.
B
296
Chlamydia is a
A)
rare infection of the reproductive system transmitted by indirect means.
B)
pelvic inflammation that usually occurs because of poor hygiene.
C)
sexually transmitted disease of bacterial origin.
D)
side effect of a gonorrhea infection.
Answer:
Page:
52.
A
294, 296
Which of the following is the MOST effective way to avoid HIV infection?
A)
Practice safer sex.
B)
Avoid sexual activity.
C)
Always use condoms for sex.
D)
Learn the sexual history of prospective sexual partners.
Answer:
Page:
51.
C
283
Which of the following BEST summarizes the current state of HIV/AIDS treatment?
A)
It can be slowed, but not cured.
B)
There are no effective treatments for HIV/AIDS.
C)
It can be cured if caught before full-blown AIDS develops.
D)
Experimental cures have been achieved, but they need to be approved by the FDA.
Answer:
Pages:
50.
D
294
C
297
Your sexually active friend Ward has begun to experience painful urination and a white discharge
from his penis. His symptoms are consistent with an infection by
A)
herpes.
B)
syphilis.
C)
gonorrhea or chlamydia.
D)
the human papillomavirus.
Answer:
Pages:
53.
The major risk of untreated chlamydia infections is
A)
painful urination.
B)
susceptibility to other STDs.
C)
possible reinfection or a “ping-pong” effect.
D)
damage to the reproductive organs and surrounding structures.
Answer:
Page:
54.
A
299
The most characteristic symptom of a herpes simplex infection is
A)
a sore or cluster of sores in the genital region.
B)
swollen lymph glands.
C)
a whole-body itch.
D)
a high fever.
Answer:
Page:
58.
D
298
Gonorrhea is treated with
A)
antibiotics.
B)
protease inhibitors.
C)
pain relievers and rest.
D)
acyclovir or similar suppressive drug.
Answer:
Page:
57.
A
298
Human papillomavirus infection leads to an increased risk of
A)
gonorrhea.
B)
chlamydia.
C)
HIV/AIDS.
D)
cervical cancers.
Answer:
Page:
56.
D
297
Human papillomavirus is responsible for
A)
genital warts.
B)
chlamydia.
C)
gonorrhea.
D)
syphilis.
Answer:
Page:
55.
C
297, 299
A
299
Of the following, which is NOT a prescription medication used to treat the symptoms of the flu?
A)
Levodopa
B)
Relenza
C)
Symmetrel
D)
Tamiflu
Answer:
Page:
59.
The major symptom of a pubic louse infestation is
A)
any of several bacterial infections of the bloodstream.
B)
the destruction of nerve tissues in the genital area.
C)
intense itching in the affected area.
D)
severe abdominal pain.
Answer:
Page:
60.
C
301
The most serious risk of a syphilis infection is
A)
sterility.
B)
the chronic destruction of connective tissues.
C)
secondary infections of gonorrhea or chlamydia.
D)
life-threatening damage to the cardiovascular and nervous systems.
Answer:
Page:
61.
A
285
D
300
A yeast infection is
A)
a fungal infection of the vagina.
B)
an acute viral infection of the bladder.
C)
an allergic reaction of vaginal tissues.
D)
an infection that results from a sexually transmitted bacterium.
Answer:
Page:
A
301
True/False
62.
Viruses, prions, and bacteria are examples of pathogens.
Answer:
Page:
63.
A reservoir for infectious disease always shows symptoms of the disease.
Answer:
Page:
64.
False
277
A respiratory infection is a result of indirect transmission.
Answer:
Page:
65.
True
276
False
277
An example of a vector is the deer tick that transmits Lyme disease.
Answer:
Page:
True
277
66.
The respiratory system can function as both a portal of entry and a portal of exit for disease
transmission.
Answer:
Pages:
67.
With most pathogens, people are not infectious during the incubation stage.
Answer:
Page:
68.
True
285
Tuberculosis thrives in crowded places where infected people are in close proximity.
Answer:
Page:
76.
True
285
Generally, you have flu and not a cold if you have a headache and high fever.
Answer:
Page:
75.
False
284
The best way to prevent transmission of colds is to wash your hands.
Answer:
Page:
74.
False
282
Colds are caused by any of five known rhinoviruses.
Answer:
Page:
73.
True
280
About 90 percent of American children are vaccinated against the major childhood illnesses by
the time they reach school age.
Answer:
Page:
72.
False
820
Passively acquired immunity results when antibodies are introduced into the body.
Answer:
Page:
71.
True
279
A vaccination is an example of naturally acquired immunity.
Answer:
Page:
70.
False
278
The clinical stage of infection is also called the acute stage.
Answer:
Page:
69.
True
277-278
True
287
Pneumonia will not develop if other infections are already present in the body.
Answer:
Page:
77.
Mononucleosis is a viral infection in which the body produces an excess amount of white blood
cells.
Answer:
Page:
78.
True
291
An HIV-infected person is considered to have AIDS when the T-helper cell count drops below a
certain point.
Answer:
Pages:
86.
True
291
Hepatitis is a viral infection of the liver.
Answer:
Page:
85.
True
290
West Nile virus infection involves flu-like symptoms including fever and fatigue.
Answer:
Page:
84.
False
290
Hantavirus pulmonary syndrome is a viral infection that spreads when humans inhale dust
contaminated with dried virus-rich rodent urine- or saliva-contaminated materials, such as from
nests.
Answer:
Page:
83.
True
289
The characteristic rash associated with Lyme disease is always present with other symptoms.
Answer:
Page:
82.
True
288
There is a vaccine now available for meningitis.
Answer:
Page:
81.
False
288
The precise nature of chronic fatigue syndrome is unknown.
Answer:
Page:
80.
True
288
A vaccine for mononucleosis is needed to prevent a repeat infection.
Answer:
Page:
79.
False
287
True
292-293
It is relatively easy to become infected with HIV.
Answer:
Page:
87.
Women are at a much greater risk than men of contracting HIV through heterosexual contact.
Answer:
Page:
88.
False
299-300
Despite the popularity of over-the-counter remedies, vaginal yeast infections only respond to
powerful prescription drugs.
Answer:
Page:
94.
False
298
Several ointments are now available that can clear up herpes infections.
Answer:
Pages:
93.
True
298
If left untreated, genital herpes can spread throughout the urinary tract and cause kidney damage.
Answer:
Page:
92.
False
296
Like many sexually transmitted diseases, genital warts are a greater risk for those who have
multiple sexual partners.
Answer:
Page:
91.
True
294-295
In the United States, the incidence of chlamydia is second only to that of gonorrhea.
Answer:
Page:
90.
True
293
Although there is currently no cure for AIDS, researchers have slowed the progress of the disease
in many people.
Answer:
Pages:
89.
False
293
False
301
Nosocomial infections are spread exclusively through sexual contact.
Answer:
Page:
False
284
Essay
95.
Describe the major links in the chain of infection, and explain the role of each.
Answer:
The agent, or pathogen, is the first link in the chain. The next is the reservoir,
where the pathogen resides. This can be in the body of an infected person or animal, in a carrier,
or elsewhere in the environment. The portal of exit is the means by which the pathogen leaves
the reservoir. The mode of transmission is the means by which the pathogen is spread directly or
indirectly to a new host by means of a portal of entry into that host. In people, this is often the
respiratory or digestive system. The portal of entry is the fifth link and refers to the means in
which a pathogenic agent enters and uninfected person. In the sixth link of this chain, the virus
enters a new host.
Pages:
96.
276-278
Describe the five stages of infection.
Answer:
1)
The incubation stage lasts from the time a pathogen enters the body until it multiplies
enough to produce symptoms. The duration can last from a few hours to many months,
depending on a number of variables. The pathogen can be transmitted, but it is not likely,
with the exception of HIV infection.
2)
The prodromal stage occurs when the host begins to experience symptoms. The pathogen
continues to multiply and is capable of being transmitted to a new host.
3)
The clinical stage is the most unpleasant stage for the host. At this time, the disease
reaches its highest point of development and can be identified through laboratory testing.
The likelihood of transmission of the disease is highest during this stage.
4)
The decline stage occurs when the first signs of recovery appear as the infection is
ending. Individuals may suffer a relapse if they overextend themselves.
5)
The recovery stage is characterized by an apparent recovery from the invading agent.
The body has built up immunity, so further susceptibility to the pathogen is typically low.
Pages:
97.
278-279
Describe how the human immunodeficiency virus (HIV) is spread.
Answer:
HIV is only spread through methods that get it into the bloodstream of the victim,
such as blood transfusions, the sharing of hypodermic needles, and oral, anal, or genital sexual
contact. When the virus is transmitted sexually, it enters the bloodstream through tears in body
tissues. HIV typically cannot be spread by contact with the sweat, tears, or saliva of an infected
person.
Page:
98.
293
Explain the relationship and the distinction between HIV infection and AIDS.
Answer:
HIV infection leads to AIDS, but AIDS does not occur immediately. After
infection by HIV occurs, there is a lengthy incubation period that typically lasts for years, during
which the person has no symptoms. Eventually in most infected people, HIV begins to weaken
the immune system and symptoms such as fever, fatigue, and diarrhea appear. Still there may be
no diagnosis of AIDS. These problems progress to more life-threatening conditions, some of
which are considered indicators of an active case of AIDS. At present, AIDS is diagnosed when
the helper T-cell count falls below 200 per cubic millimeter of blood.
Pages:
99.
292-296
Describe how you can reduce your risk of contracting HIV and sexually transmitted infections.
Answer:
You can reduce your risk by practicing sexual abstinence, not having multiple
partners, or by maintaining long-term monogamous relationships. If you engage in sexual
activity, you can reduce your risk by learning the sexual history and any health conditions that
your partner has, using condoms and spermicides correctly, and avoiding all contact with bodily
fluids. Refrain from having sex with known injectable drug users or those infected with an STI,
and do not engage in unprotected anal intercourse. Lastly, curtail the use of drugs that will impair
good judgment.
Page:
296