Listeriosis is commonly associated with

a) contaminated water

b) contaminated food

c) infected mice

d) infected birds

b) contaminated food

Hemolytic Uremic Syndrome is caused by an infection with

a) dracunculus medinensis

b) staphylococcus aureus

c) escherichia coli O157:H7

d) salmonella typhimurium

c) escherichia coli O157:H7

The basic principles of disease control include all of the following except

a) lag phase

b) control of disease source

c) mode of transmission

d) understanding susceptibility

a) lag phase

Which one of the following phrases most accurately describes the term endemic?

a) sporadic occurrence of an illness

b) illnesses that exceed expected levels

c) all illnesses present at any one time

d) constant presence of an illness

d) constant presence of an illness

What is the most common cause of bacterial meningitis in children under five years of age?

a) Neisseria meningitides

b) Group B Streptococci

c) Streptococcus pneumoniae

d) Haemophilus influenzae type B

d) Haemophilus influenzae type B

How is "giardiasis" usually transmitted to others?

a) Person-to-person transfer of cysts from the feces of the infected individual

b) Drinking unfiltered water from streams and lakes

c) Drinking unboiled water from streams and lakes

d) Drinking inadequately chlorinated water from a municipal water distribution system

a) Person-to-person transfer of cysts from the feces of the infected individual

Which of the following duties of state and local health agencies is focused to protect the public's 

health and welfare?

a) Community-intensive planning

b) Statutory administrative action

c) Regulatory responsibilities

d) Plan implementation

c) Regulatory responsibilities

Which of the following is a measure of the amount of light scattered by particles suspended in a 

water test sample?

a) Formazin Turbidity Units (FTU)

b) Nephelometric Turbidity Units (NTU)

c) Hydrosyntalic Turbidity Units (HTU)

d) Lorcetic Turbidity Units (LTU)

b) Nephelometric Turbidity Units (NTU)

What is an epidemic?

a) The constant presence of a disease within a community or region

b) The presence of an infectious agent on a body surface

c) The presence of infection in a host without clear, recognizable clinical symptoms

d) The occurrence in a community or region of cases of an illness clearly in excess of expectancy

d) The occurrence in a community or region of cases of an illness clearly in excess of expectancy

What portal of entry should a field sanitarian protect to avoid contracting Lyme disease?

a) Skin

b) Respiratory tract

c) Reproductive organs

d) Digestive tract

a) Skin

Swimmer's itch is a common name for which of the following diseases?

a) Leptospirosis

b) Subdural dermatitis

c) Schistosomiasis

d) Trichiniasis

c) Schistosomiasis

Which of the following factors would least contribute to the emergence of a new infectious 

disease?

a) Human behavior

b) Heat disinfection

c) Antibiotic use

d) Disinfectant use

b) Heat disinfection

The interval between exposure to an infectious agent and the appearance of the first symptom is 

called the

a) transmission period

b) susceptible period

c) reactive period

d) incubation period

d) incubation period