REHS/RS Study Guide NEHA

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

Haemophilus influenza type B

How is Giardiasis usually transmitted to others

Person to person transfer of cyst from the feces of infected individuals

What duties of state and local health disease are focused to protect the public health and welfare

Regulatory responsibilities

What is the measure of the amount of light scattered by particle suspended in a water test sample called

Nephelometric Turbidity Units NTU

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

An epidemic

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

Skin

Swimmer's itch is a common name for what?

Schistosomosis

What factor least contribute to the emergence of a new infectious disease?

Human behavior,

heat disinfection

antibiotic use

disinfectant use.

Heat disinfection

Listeriosis is commonly associated with

Contaminated food

Hemolytic Uremic syndrome is caused by an infection with

Escherichia coli 0157:H7

What are three basic principles of disease control

Control disease source

mode transmission,

understanding susceptibility

Constant presence of illness is called

Endemic

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

Incubation Period.

An environmental health specialist receives a cash payment from a restaurant operator in order to receive a passing restaurant inspection score

Malfeasance

An environmental health manager trains, environmental health specialist on the operation of environmental probe, thermometers, and the interest of time the manager omit a training section on safe sheathing, and an environmental health specialist, punctures their finger and endures themselves. This is an example of.

Nonfeasance

An environmental health specialist, informs vector control staff to perform landing, counts on their skin in a known mosquito breeding ground confirmed to be positive with west Nile. This is an example of.

Misfeasance

Vehicle born, vector Born or airborne are all examples of what mode of transmission?

Indirect mode of transmission

An employer is liable for the torts of its employee committed within the scope of their employment. This is referred to as.

Respondeat superior

Performance of an authorized act in an unauthorized manner is called

Misfeasance

action authorized by law to restrict or prevent the movement of goods or protection of public health safety and welfare is called an order of

Embargo

What is the federal agency that regulates food additives?

FDA

When a legal action is being prepared, one of the first steps a sanitarian should take is to:

A. Obtain a warrant

B. Obtain a court order

C. Keep accurate records

D. Check with other agencies

keep accurate records

presence of pathogenic agents on a surface, article or substance

Contamination (when used in connection with a communicable disease)

What is the most common contributing factor to foodborne illness

improper holding temperatures

Why are some foods classified as time temperature controlled for safety?

They support rapid growth of pathogenic microorganisms

Which food does not need to be held below 41°F

Garlic and oil

Tofu

Cut cantaloupe

UHT creamer

(Ultra heat treated) UHT creamer

What is the best means of inhibiting the growth of microorganisms in fresh meat?

adequate refrigeration and cleanliness

What is the maximum accumulated time that time/temperature control for safety foods can safely be exposed to temperature danger zone

Six hours

If time only is used as a public health control what is the maximum. Time Recommended by the FDA for time temperature/control for safety Food to be held.

Six hours if the warmest part of the food item does not exceed 70°F

What is the minimum period that the FDA recommends employees wash their hands and arms up to the elbow?

20 seconds

Unpasteurized eggs not intended for immediate service should be cooked to

155F for 15 seconds

What is the usual mode of infection from salmonella?

Ingestion of contaminated food

What is the source of scombroid poisoning?

Histamines in the muscle of fish

What are signs of spoiled fish?

Strong odor, gray gills, sunken eyes

Which of the following is most likely to cause illness

Oysters, crabs, shrimp, or scallops

Oysters

The lab reports a positive coliform test that exceeds permissible limits on a bottle of pasteurized, milk what does that indicate?

Improper bactericidal treatment of the equipment

What is the most effective practice for preventing trichinosis in people?

Be sure that fresh pork is thoroughly cooked

HACCP is required for

Smoking foods as a method of preservation

performing reduced oxygen packaging,

using food, additives, or adding other components to preserve food or render it non-TCS

What should be done with food samples collected during a foodborne illness investigation

Seal

label

refrigerate

What is the primary requirement in designing food service facility?

Cleanability

What is the most important rule for food storage?

First in, first out rule

What type of well is considered least likely to be become contaminated

Drilled

Diatomaceous earth filters

Should be supplemented by a chlorination system

Microbial pollution travels only a short distance through:

Smooth clay

What type of filter Is recommended for small communities in rural places

Slow sand filter

Back siphonage may be prevented by

Vacuum breakers

Air separation

Back pressure unit

iron coagulation, lime softening, and ion exchange are effective removal method for

cadmium removal

Collecting a drinking bottle sample 3 considerations

The sampling tap should be clean

free of leaks

and flushed for 2 to 3 minutes

What contaminant has been associated with learning and cognitive disorders in children who drink contaminated water?

Lead

Waste water from flushing, water closet, latrine or privy is called

Blackwater

What is the risk if a septic tank is pumped during a wet period

The tank may float out of the ground

Nutrients associated with eutrophication include all of the following except:

A. organic carbon

B. potassium

C. nitrogen

D. phosphates

Potassium

Three considerations when reducing sewage to gases

Anaerobic bacteria

Protozoa

Aerobic bacteria

A septic tank maintenance worker has checked an empty tank for the presence of hydrogen sulfide (H2S). The test was negative, and there are no odors indicating the presence of other hazardous gases. Is the tank safe to enter without a respirator and supplied air?

a) Yes, because hydrogen sulfide and odors were not detected

b) No, because oxygen content and methane were not tested

c) Yes, because the absence of odors and H2S indicates acceptable confined space entry conditions

d) No, because a lack of H2S is a sign of a hazardous confined space atmosphere

B) No, because oxygen content and methane were not tested

Ozone as a disinfectant is

nontoxic to aquatic organisms, source of dissolved oxygen, and an excellent viricide

Aerobic bacteria requires all of the following nutrients

Carbon, phosphorus, nitrogen

Does not require magnesium

Ozone does not

Have a long lasting residual

What does a malted brown and red soil indicate?

Inadequate aeration method

Alternative small water treatment systems are considered when

1. Space is limited and service water supplies are inadequate

2. Highly porous formations ex

3. Hi groundwater exist.

When would an alternative small wastewater treatment system not be considered

When Impervious formations are found at a depth of 10 feet

Lime coagulation, mixed media filtration, and activated carbon filtration will greatly reduce:

EPA priority pollutants

Some common pathogenic organisms found in wastewater will survive in harsh temperature extremes more than

2 years

What is a storm sewer used for?

To remove rain and other standing service water

A storm sewer is NOT used for

Sewage and stormwater

Household wastewater

Gutter drain water

Nontoxic non-hazardous waste water

Stream pollution is apparent by

A zone of degradation

A young lake is considered to be:

oligotrophic

An old lake is considered

eutrophic

How much should a septic tank be increased when a garbage disposal is added?

The size of the tank is increased 50%

How much Sludge does a person accumulate in a year

18 to 21 gallons

How often should a septic tank for a private home be serviced

every 3-5 years

What is related primarily to wastewater treatment by the activated sludge, trickling filter, and spray irrigation processes

Human disease from aerosols of wastewater

using wastewater for irrigation of consumable plant products may present a health hazard to humans if the water contains

Cadmium

After the servicing or pumping of a septic tank, it is essential that the tank cap be

Replaced and secured for safety purposes

Is household hazardous waste exempt from RCRA?

Yes

The grinding of garbage is an acceptable method of

garbage disposal

What are 4 advantages of using the shredded solid waste landfill method

1. It does not cause odors.

2. It may require daily earth cover.

3. It reduces insect breeding.

4. It does not readily absorb precipitation.

What is the best sanitary landfill method for a location with rolling terrain?

Area or ramp method

Why is it important for businesses that generate hazardous waste to deal only with licensed disposal companies that have a good compliance history?

The business is held accountable for where and how the hazardous waste generated is disposed of

What are three types of hazardous waste incinerators

Rotary kiln, fixed hearth, fluidized bed

Which federal law, regulates underground storage tanks for hazardous waste

Resource conservation and recovery act RCRA

A measure of the probability and severity of adverse effects under specific conditions best describes

Risk

What would you use to collect undisturbed soil samples?

Split spoon

Statistical estimate of an oral dose of a chemical that produces a lethal effect on half of an animal population

LD50

Name three things the dose response relationship of a toxic substance depends on

1.concentration

2.Duration of exposure

3. Toxicity

Which respiratory device provides the best protection

Positive pressure respirator with a full face piece

What is the order of importance for first responders at an incident?

1. Responder safety.

2. Public safety.

3. Environmental safety

4. Property protection.

How is Lyme disease transmitted?

"black legged" (deer) ticks

The emergency planning and community right to know act SARA TITLE III requires disclosure of the type and quantities of chemicals

Produced on site

Accidentally discharged into the atmosphere

And some but not all chemicals routinely discharged into the atmosphere

What strategy would be used to abate a current outbreak of rickettsial pox?

Apply acaricides prior to suppressing rat abundance

What is transmitted by rat-associated mites

rickettsial pox

When should you treat a dwelling for bedbugs?

Only after a living bedbug has been positively confirmed on the premises

Poison ivy, poison oak, and poison sumac our best managed by

Treating them with an herbicide

A person suffering allergic symptoms in a home all seasons of the year might be reacting to allergens from

Cockroaches

What is most effective for controlling ragweed?

2,4-D

What disease do you get from inhaling dust from bird droppings

Psittacosis

How would you control rodent populations in a food, production or food service facility?

Improving sanitation and securing food

Killing an infectious agent outside the body by chemical or physical means

Disinfection

When would pesticides be considered in an Integrated Pest Management program?

a) as a first choice

b) as the last option

c) never

d) anytime they might be appropriate to reaching the goals of the program

d) anytime they might be appropriate to reaching the goals of the program

What is the best option if a bat is found in a room with a sleeping infant?

Capture the bat alive and consider having it tested for rabies

Define RAD

radiation absorbed dose