NEHA EXAM CHAPTER 2 REHS
HAZWOPER ICS NIMS COMPREHENSIVE
SCRIPT 2026 COMPLETE QUESTIONS AND
SOLUTIONS GRADED A+
⩥ 10 essential public health services. Answer: 1. Monitor health
2. Diagnose and investigate
3. Inform, educate, and empower
4. Mobilize community partnerships
5. Develop policies and plans
6. Enforce laws and regulations
7. Link people to needed personal health services
8. Assure a competent workforce
9. Evaluate
10. Research
⩥ Nelson Fabian. Answer: Director of Environmental Health
Association
Three Principles - Current/Future Effect on EH in 1998
1. The transition from a police function to a scientific standing
2. The emergence of environmental protection and the subordination of
EH
,3. The privatization of EH
⩥ Responsibility areas of REHS/RS. Answer: ○ Food protection
○ Potable water
○ Solid/Hazardous waste management
○ Vector control
○ Radiation protection
○ Occupational safety and health
○ Air quality
○ Noise control
○ Housing
○ Institutions and licensed establishments
○ Swimming pools
○ Recreational facilities
○ Disaster sanitation
⩥ Epidemic. Answer: The occurrence in an area of a group of illnesses
similar in nature, clearly in excess of normal expectancy
⩥ Endemic. Answer: Habitual presence of a disease within a
geographical area
,⩥ Pandemic. Answer: Outbreak of exceptional proportions spreading
quickly from one part to another
⩥ Incidence (Rate). Answer: New cases of a disease in a population
during specific time / Persons at risk during that time period
⩥ Prevalence. Answer: Indicate how many total numbers of cases of a
disease are occurring relative to the total population - occurrence of
disease at a given time
⩥ Morbidity. Answer: The condition of being ill or sick
⩥ Mortality. Answer: The condition of being dead
⩥ Lag phase. Answer: A period when the bacteria are adjusting to the
environment (Adjustment)
⩥ Log phase. Answer: A population grows in a logarithmic fashion
(Growth)
⩥ Descriptive Study (Epi). Answer: The study of the amount and
distribution of disease within a given population by person, place, and
time. Summarizes the basic data available on health and the major
causes of disease
, ⩥ Analytic Study (Epi). Answer: The study of causes determining the
relatively high or low disease frequency in specific groups. Seeks to
discover the causes of problems by formulating hypotheses based on
actual observations of existing diseases, conducting studies of outbreaks,
and evaluating the data to determine the accuracy of original hypotheses.
⩥ Experimental Studies. Answer: The investigator determines through a
controlled process the exposure for each individual (clinical trial) or
community (community trial), and then tracks the individuals or
communities over time to detect the effects of the exposure
⩥ Observational Studies. Answer: Simply observe the exposure and
disease status of each study participant.
⩥ Prospective Cohort Study. Answer: Similar in concept to the
experimental study. In a cohort study, the epidemiologist records
whether each study participant is exposed or not, and then tracks the
participants to see if they develop the disease of interest. Participants are
enrolled as the study begins and are then followed prospectively over
time to identify the occurrence of the
outcomes of interest.
⩥ Retrospective Cohort Study. Answer: Both the exposure and the
outcomes have already occurred. Like in a prospective cohort study, the
investigator
HAZWOPER ICS NIMS COMPREHENSIVE
SCRIPT 2026 COMPLETE QUESTIONS AND
SOLUTIONS GRADED A+
⩥ 10 essential public health services. Answer: 1. Monitor health
2. Diagnose and investigate
3. Inform, educate, and empower
4. Mobilize community partnerships
5. Develop policies and plans
6. Enforce laws and regulations
7. Link people to needed personal health services
8. Assure a competent workforce
9. Evaluate
10. Research
⩥ Nelson Fabian. Answer: Director of Environmental Health
Association
Three Principles - Current/Future Effect on EH in 1998
1. The transition from a police function to a scientific standing
2. The emergence of environmental protection and the subordination of
EH
,3. The privatization of EH
⩥ Responsibility areas of REHS/RS. Answer: ○ Food protection
○ Potable water
○ Solid/Hazardous waste management
○ Vector control
○ Radiation protection
○ Occupational safety and health
○ Air quality
○ Noise control
○ Housing
○ Institutions and licensed establishments
○ Swimming pools
○ Recreational facilities
○ Disaster sanitation
⩥ Epidemic. Answer: The occurrence in an area of a group of illnesses
similar in nature, clearly in excess of normal expectancy
⩥ Endemic. Answer: Habitual presence of a disease within a
geographical area
,⩥ Pandemic. Answer: Outbreak of exceptional proportions spreading
quickly from one part to another
⩥ Incidence (Rate). Answer: New cases of a disease in a population
during specific time / Persons at risk during that time period
⩥ Prevalence. Answer: Indicate how many total numbers of cases of a
disease are occurring relative to the total population - occurrence of
disease at a given time
⩥ Morbidity. Answer: The condition of being ill or sick
⩥ Mortality. Answer: The condition of being dead
⩥ Lag phase. Answer: A period when the bacteria are adjusting to the
environment (Adjustment)
⩥ Log phase. Answer: A population grows in a logarithmic fashion
(Growth)
⩥ Descriptive Study (Epi). Answer: The study of the amount and
distribution of disease within a given population by person, place, and
time. Summarizes the basic data available on health and the major
causes of disease
, ⩥ Analytic Study (Epi). Answer: The study of causes determining the
relatively high or low disease frequency in specific groups. Seeks to
discover the causes of problems by formulating hypotheses based on
actual observations of existing diseases, conducting studies of outbreaks,
and evaluating the data to determine the accuracy of original hypotheses.
⩥ Experimental Studies. Answer: The investigator determines through a
controlled process the exposure for each individual (clinical trial) or
community (community trial), and then tracks the individuals or
communities over time to detect the effects of the exposure
⩥ Observational Studies. Answer: Simply observe the exposure and
disease status of each study participant.
⩥ Prospective Cohort Study. Answer: Similar in concept to the
experimental study. In a cohort study, the epidemiologist records
whether each study participant is exposed or not, and then tracks the
participants to see if they develop the disease of interest. Participants are
enrolled as the study begins and are then followed prospectively over
time to identify the occurrence of the
outcomes of interest.
⩥ Retrospective Cohort Study. Answer: Both the exposure and the
outcomes have already occurred. Like in a prospective cohort study, the
investigator
