Podcast
Questions and Answers
What are the factors that affect pressure sterilisation with vapour?
What are the factors that affect pressure sterilisation with vapour?
- Pressure, humidity, temperature, and time (correct)
- Pressure, humidity, and temperature
- Pressure, humidity, temperature, and volume
- Pressure, humidity, time, and load
Which statement about sterilisation methods is incorrect?
Which statement about sterilisation methods is incorrect?
- UV radiation is non-penetrant and its effect is limited to the surface.
- Millipore cellulose filtration has a threshold of 0.22µm.
- Filtration effectively stops bacteria and viruses. (correct)
- Ionising radiations are used for food sterilisation.
- Ionising radiations are used for sterilising plastic instruments.
What does the Bowie–Dick test evaluate?
What does the Bowie–Dick test evaluate?
- Whether the desired temperature has been reached.
- Vapour penetration into the sterilised material. (correct)
- Inactivation of Bacillus stearothermophilus spores.
- Effectiveness of air removal from the chamber. (correct)
- Whether there is excessive humidity present.
Which microorganisms are effectively killed by alcohols?
Which microorganisms are effectively killed by alcohols?
In what situations can a penitentiary doctor deem an inmate unfit for jail?
In what situations can a penitentiary doctor deem an inmate unfit for jail?
What type of mortality rate is calculated by dividing the number of deaths from pancreatic cancer by the total number of deaths from all tumours?
What type of mortality rate is calculated by dividing the number of deaths from pancreatic cancer by the total number of deaths from all tumours?
Given a melanoma incidence of 20 cases per 100,000 people per year and a 5-year survival rate, how many people out of 1,000 would be expected to be affected by melanoma?
Given a melanoma incidence of 20 cases per 100,000 people per year and a 5-year survival rate, how many people out of 1,000 would be expected to be affected by melanoma?
What is the formula for calculating exposure odds for healthy individuals in a case-control study?
What is the formula for calculating exposure odds for healthy individuals in a case-control study?
Which of the following organizations is NOT considered a Non-Governmental Organization (NGO)?
Which of the following organizations is NOT considered a Non-Governmental Organization (NGO)?
Which of these screening tests is NOT considered to be of proven effectiveness for its respective disease?
Which of these screening tests is NOT considered to be of proven effectiveness for its respective disease?
Which factor is NOT considered a component of evidence-based medicine?
Which factor is NOT considered a component of evidence-based medicine?
Epidemic curves are primarily used to assess which of the following?
Epidemic curves are primarily used to assess which of the following?
Which of the following is NOT considered a risk factor for skin tumors?
Which of the following is NOT considered a risk factor for skin tumors?
What is the most effective prevention measure for scarlet fever?
What is the most effective prevention measure for scarlet fever?
Which of these factors is NOT a determinant of food safety?
Which of these factors is NOT a determinant of food safety?
What is the most effective way to prevent the spread of pediculosis?
What is the most effective way to prevent the spread of pediculosis?
What is the recommended prophylaxis for close contacts of a patient with Hepatitis B?
What is the recommended prophylaxis for close contacts of a patient with Hepatitis B?
Which of the following is the definition of containment, as it relates to public health?
Which of the following is the definition of containment, as it relates to public health?
Which of the following is a specific mortality rate?
Which of the following is a specific mortality rate?
Which of the following is the most likely causal factor in a disease?
Which of the following is the most likely causal factor in a disease?
Which of the following is a correct statement about disinfection?
Which of the following is a correct statement about disinfection?
What is the main difference between quarantine and containment, as it relates to public health?
What is the main difference between quarantine and containment, as it relates to public health?
Which of the following statements is incorrect about disease regression?
Which of the following statements is incorrect about disease regression?
Which statements are correct?
Which statements are correct?
Identify the incorrect vector-disease pair from the options below.
Identify the incorrect vector-disease pair from the options below.
Which infectious disease definition is accurate?
Which infectious disease definition is accurate?
Which statement regarding disease reservoirs is correct?
Which statement regarding disease reservoirs is correct?
Identify the incorrect statement regarding the effects of Staph toxin.
Identify the incorrect statement regarding the effects of Staph toxin.
Intervention is required at what concentration of legionella in water?
Intervention is required at what concentration of legionella in water?
Which handwashing technique is most effective for eliminating transient flora?
Which handwashing technique is most effective for eliminating transient flora?
Identify the wrong statement regarding scabies prophylaxis.
Identify the wrong statement regarding scabies prophylaxis.
Which of the following defines civil invalidity for individuals over 18 years old?
Which of the following defines civil invalidity for individuals over 18 years old?
What is the formula for calculating perinatal mortality rate?
What is the formula for calculating perinatal mortality rate?
How is the raw mortality rate calculated?
How is the raw mortality rate calculated?
What is defined as late neonatal mortality?
What is defined as late neonatal mortality?
Which of the following is NOT a criterion from the Wilson and Junger criteria for screening?
Which of the following is NOT a criterion from the Wilson and Junger criteria for screening?
Which of the following statements is true regarding BOD and COD?
Which of the following statements is true regarding BOD and COD?
What indicates excessive water hardness?
What indicates excessive water hardness?
Which of the following substances are categorized as corrosive?
Which of the following substances are categorized as corrosive?
What are the drawbacks of observational studies compared to randomized controlled trials?
What are the drawbacks of observational studies compared to randomized controlled trials?
What is the main characteristic differentiating the Italian legal definition of cerebral death from the Harvard criteria?
What is the main characteristic differentiating the Italian legal definition of cerebral death from the Harvard criteria?
Which of the following is NOT a common AIDS prevention measure?
Which of the following is NOT a common AIDS prevention measure?
Which aspects are considered to be key elements of the definition of burnout?
Which aspects are considered to be key elements of the definition of burnout?
Who can be considered a perpetrator of infanticide?
Who can be considered a perpetrator of infanticide?
What are the crucial features of a screening test?
What are the crucial features of a screening test?
What does the topographic criterion for evaluating a causal link encompass?
What does the topographic criterion for evaluating a causal link encompass?
According to the PNPV 2017–19 plan, who is recommended to receive the HPV vaccine?
According to the PNPV 2017–19 plan, who is recommended to receive the HPV vaccine?
Flashcards
LD50
LD50
The dose of a substance that is lethal to 50% of the test population.
Secondary attack rate
Secondary attack rate
The proportion of susceptible individuals who develop the disease after contact with an infected individual.
Virulence
Virulence
The ability of a pathogen to cause disease in a susceptible host.
Contagiousness
Contagiousness
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Vector
Vector
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Sporadic disease
Sporadic disease
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Endemic disease
Endemic disease
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Epidemic
Epidemic
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What factors influence pressure steam sterilization?
What factors influence pressure steam sterilization?
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Which statement about sterilization methods is incorrect?
Which statement about sterilization methods is incorrect?
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What does the Bowie-Dick test assess?
What does the Bowie-Dick test assess?
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What types of microorganisms are alcohols effective against?
What types of microorganisms are alcohols effective against?
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When should a penitentiary doctor intervene?
When should a penitentiary doctor intervene?
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What does the ratio of pancreatic cancer deaths to total tumor deaths represent?
What does the ratio of pancreatic cancer deaths to total tumor deaths represent?
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Given an incidence rate of 20/100,000 per year and a 5-year survival rate for melanoma, how many people out of 1,000 would be affected?
Given an incidence rate of 20/100,000 per year and a 5-year survival rate for melanoma, how many people out of 1,000 would be affected?
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How is the exposure odds for healthy individuals calculated?
How is the exposure odds for healthy individuals calculated?
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Observational Study
Observational Study
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Cerebral Death
Cerebral Death
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AIDS Prevention Measures
AIDS Prevention Measures
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Burnout
Burnout
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Infanticide
Infanticide
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Fundamental Characteristics of a Screening Test
Fundamental Characteristics of a Screening Test
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Topographic Criterion
Topographic Criterion
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HPV Vaccine Recommendation
HPV Vaccine Recommendation
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Perinatal mortality
Perinatal mortality
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Crude mortality rate
Crude mortality rate
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Late neonatal mortality
Late neonatal mortality
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Case fatality rate (lethality)
Case fatality rate (lethality)
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Disease duration
Disease duration
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Latent, preclinical stage
Latent, preclinical stage
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Biochemical Oxygen Demand (BOD)
Biochemical Oxygen Demand (BOD)
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Chemical Oxygen Demand (COD)
Chemical Oxygen Demand (COD)
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What are NGOs?
What are NGOs?
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What defines effective mass screenings?
What defines effective mass screenings?
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What are the pillars of evidence-based medicine?
What are the pillars of evidence-based medicine?
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What are epidemic curves used for?
What are epidemic curves used for?
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What are some risk factors for skin tumors?
What are some risk factors for skin tumors?
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How is scarlet fever prevented?
How is scarlet fever prevented?
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How is Rubella (German Measles) handled in Italy?
How is Rubella (German Measles) handled in Italy?
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What are the statistics on domestic accidents in Italy?
What are the statistics on domestic accidents in Italy?
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What is sanitary surveillance?
What is sanitary surveillance?
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What is quarantine?
What is quarantine?
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What is containment?
What is containment?
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Explain disinfection.
Explain disinfection.
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Explain antisepsis.
Explain antisepsis.
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What is specific mortality?
What is specific mortality?
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What is periodic prevalence?
What is periodic prevalence?
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Define cost-saving prevention.
Define cost-saving prevention.
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Study Notes
Ratio Definition
- Ratio can be defined as: (N/P) × K
Screening Indicators
- Sensitivity
- Specificity
- Relative risk
- Positive predictive value
- Negative predictive value
Alma Ata Date
- 6–12 September 1978
Nitrate Indicators
- Possible industrial pollution
- Possible sewage pollution
Drinking Water Wrong Statement
- Total coliforms up to 5CFU/dL
- Faecal coliforms up to 5CFU/dL
- Absent faecal streptococci
Wastewater Classification
- Classified as intermediate is pH 6.9–7.5
- Strong if 7.5–8.0
- Intermediate if BOD (biochemical oxygen demand)/mL >300
- Strong if COD (chemical oxygen demand)/mL 600–1,000
- Strong if COD/mL 400–600
- pH 6.9-7.5 (intermediate)
- pH 7.5-8.0 (strong)
- BOD/mL 100-200 to 200-300 to >300
- COD/mL 165-400 to 400-600 to 600-1,000
- Sediment (mg/L) 150 to 200-300 to >300 to 500 to 300
Air Effects - Wrong Definition
- III-degree frostbite: tissue alterations with necrosis
- Heatstroke: organism cannot give away heat due to elevated T and humidity
- I-degree frostbite: ischaemia followed by vasodilation and hyperaemia
- Heatstroke: organism cannot give away heat due to elevated T and humidity and null wind speed
Dangerous Waste Contains
- Substances toxic for reproduction >0.5%
- Carcinogenic substances >0.1%
- Flash point <15°C
- One or more noxious substances >25%
Particulate Matter
- Particulate matter 0.01–400µm
- Aerosol is only solid
- Smog
Infection and Diseases Definitions
- Reservoir
- Carrier
- Source
- Healthy carrier
- Chronic carrier
LD50 and Attack Rate
- LD50 is the minimal lethal dose
- Secondary attack rate = (secondary cases)/(susceptible – primary cases)
- Attack rate = (secondary cases)/(susceptible – primary cases)
- Virulence does not depend on host
- Contagiousness is the ability of a pathogen to go from one subject to another
Vectors Wrong Answer
- Bilharziasis - Glossina palpalis
- Leishmaniasis - Phlebotomus spp.
- Trypanosomiasis - Glossina palpalis
- Yellow fever - Aedes aegypti
- Malaria - Anopheles
Infectious Disease in Community
- Sporadic - occasional appearance at high time and distance intervals
- Endemic - stably present with constant incidence in a population
- Absence - disease never appeared or disappeared for a long time
- Epidemic - sudden increase of disease incidence
Human Reservoir Diseases
- Typhus
- Shigellosis
- Syphilis
- TBC
- Brucellosis
Statement
- Staph toxin is heat-resistant
- Salmonella on foods is destroyed by cooking, boiling, pasteurising
- Salting and sausage making are sufficient to destroy salmonella
- HAV transmission is oro-faecal
- Staph toxin does not alter organoleptic characteristics
- Mercury: nephrotoxic
- Cadmium: nephrotoxic
- Lead: nephrotoxic
- Intervention is required if legionella is found in water at 100 CFU/L
- Elimination of transient flora and reduction of resident flora is obtained via surgical handwashing
- In TBC, chemoprophylaxis is performed on skin-negative close contacts with high risk of disease development, and tuberculin tests and XR are done in positive case.
- Scabies prophylaxis includes destroying mites and eggs, and washing sheets at 60°C.
- Pressure sterilization depends on pressure, humidity, temperature, time, and load.
- Ionising radiations are used in food and plastic instruments
- Millipore cellulose filtration stops bacteria and viruses, and has a threshold of 0.22µm
- UV is non-penetrant, its effect limited to the surface
Bowie-Dick Test
- Reached temperature
- Air removal
- Vapour penetration
- Excess humidity
- Bacillus stearothermophilus killing
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