BI 303- Epidemiology Final Exam Study
Guide 2026/2027
⭐ Accurate Questions with Correct Detailed Solutions |
Newest Updated Version | High Pass Success
Prepare with confidence using this comprehensive Final Exam Study Guide 2026/2027,
designed to help students review important concepts, strengthen understanding, and improve
overall exam performance.
This resource includes accurate exam-style questions with correct detailed solutions,
carefully structured to reflect commonly tested topics and current exam standards. Each solution
is clearly explained to help students understand the reasoning behind every answer, reinforce
learning, and improve problem-solving skills.
Whether you are preparing weeks in advance or doing last-minute revision, this guide provides a
simple, organized, and exam-focused approach to studying smarter and achieving better
results.
🔥 Key Highlights
✔ Accurate exam questions covering essential topics
✔ Correct detailed solutions with clear explanations
✔ Focused review of commonly tested concepts
✔ Newest updated version (2026/2027)
✔ Easy-to-follow format for quick and effective revision
🚀 Why This Study Guide Is Effective
• Helps strengthen understanding of key concepts
• Supports fast and efficient revision
• Improves confidence before exams
• Enhances problem-solving and test-taking skills
• Provides realistic exam-style practice
,🎯 Ideal For
• Final exam preparation
• Midterm and course revision
• Practicing exam-style questions
• Last-minute study sessions
• Improving overall academic performance
📚 A trusted and practical study resource designed to help students prepare effectively,
build confidence, and achieve exam success.
Shigellosis infectious does
10-100 cells
Salmonella infectious dose
high
Epidemiology
Branch of medical science concerned with the incidence, distribution, and control of
diseases that affect large numbers of people.
infectious dose
minimum number of microbes required for infection to proceed
Incubation period
interval between initial infection and first signs and symptoms
localized infection
an infection that is limited to a specific location in the body and has local symptoms
systemic infection
an infection throughout the body
Bacterimia
bacteria in the blood
Koch's Postulates
Set of rules for proving that a microorganism causes a specific disease.
Toxemia
toxins in the blood
Viremia
viruses in the blood
adherence
bacteria attaches to your cells glycoproteins
balanced pathogenicity
The pathogen becomes less virulent while the host becomes less susceptible
what do bacteria use to adhere to host cells
pilli/capsle
,Mucosal-associated lymphoid tissue (MALT)
immune cells found in the gut and the respiratory organs
Direct Damage
physical damage to property that results from the inability to use the damaged property
Indirect damage
host response is inappropriate and excessive
examples of endotoxins
E.coli, (vibrio) cholera, salmonella
AB toxins
exotoxin- Consist of two subunits, A and B
-Work by binding to host cell receptor (B subunit) and transferring damaging agent (A
subunit) across the cell membrane
-Examples: diphtheria toxin, tetanus toxin, botulinum toxin
examples of exotoxins
diphtheria which destroys the psuedomembrane
Exotoxins
toxic substances that bacteria secrete into their environment
Endotoxins
A toxic component of the outer membrane of certain gram-negative bacteria that is
released only when the bacteria die.
Toxoids
inactivated exotoxins used in vaccines
antitoxins
antibodies against specific exotoxins
Exfoliation
scalded skin syndrome
Lipid A
The lipid component of lipopolysaccharide, which is released from dead Gram-negative
bacterial cells and can trigger shock and other symptoms in human hosts.
Ignaz Semmelweis
advocated hand washing to prevent transmission of puerperal fever from one OB
patient to another
communicable disease
a disease that is spread from one host to another
non-communicable disease
A disease that cannot be spread from person to person
endemic
always present in a population
sporadic disease
disease that occurs occasionally in a population
epidemic
A widespread outbreak of an infectious disease.
outbreak
A sudden rise in the incidence of a disease
pandemic
, Disease that occurs over a wide geographic area and affects a very high proportion of
the population.
attack rate
an incidence rate calculated for a particular population for a single disease outbreak and
expressed as a percentage
Basic reproduction number (R0)
the number of expected secondary transmissions from each single case of a disease in
an entirely susceptible population
Prevelance
The number or proportion of cases of a particular disease or condition present in a
population at a given time.
Morbidity
Refers to ill health in an individual and the levels of ill health in a population or group.
mortality
death
case fatality rate
percentage of population that dies from a specific disease
Reservoir of infection
a continual source of infection
direct transmission
Transmission of blood or body fluids through touching (including shaking hands),
kissing, coughing, sneezing, and talking.
indirect contact
Exposure or transmission of disease from one person to another by contact with a
contaminated object.
droplet transmission
transmission via airborne droplets less than 1 meter
vector-borne transmission
The use of an animal to spread an organism from one person or place to another.
vechicle borne
transmission via food, water, blood, and other biological sources, and fomites can be a
source of contamination
Biological transmission
pathogen reproduces in the vector; transmitted via bites or feces
hardest type of reservoir to eradicate
environmental
Yersinia pestis
bubonic plague
mechanical vector
not necessary to the life cycle of an infectious agent and merely transports it without
being infected
portal of entry
any body opening on an uninfected person that allows pathogens to enter
cdc
Centers for Disease Control and Prevention
who
Guide 2026/2027
⭐ Accurate Questions with Correct Detailed Solutions |
Newest Updated Version | High Pass Success
Prepare with confidence using this comprehensive Final Exam Study Guide 2026/2027,
designed to help students review important concepts, strengthen understanding, and improve
overall exam performance.
This resource includes accurate exam-style questions with correct detailed solutions,
carefully structured to reflect commonly tested topics and current exam standards. Each solution
is clearly explained to help students understand the reasoning behind every answer, reinforce
learning, and improve problem-solving skills.
Whether you are preparing weeks in advance or doing last-minute revision, this guide provides a
simple, organized, and exam-focused approach to studying smarter and achieving better
results.
🔥 Key Highlights
✔ Accurate exam questions covering essential topics
✔ Correct detailed solutions with clear explanations
✔ Focused review of commonly tested concepts
✔ Newest updated version (2026/2027)
✔ Easy-to-follow format for quick and effective revision
🚀 Why This Study Guide Is Effective
• Helps strengthen understanding of key concepts
• Supports fast and efficient revision
• Improves confidence before exams
• Enhances problem-solving and test-taking skills
• Provides realistic exam-style practice
,🎯 Ideal For
• Final exam preparation
• Midterm and course revision
• Practicing exam-style questions
• Last-minute study sessions
• Improving overall academic performance
📚 A trusted and practical study resource designed to help students prepare effectively,
build confidence, and achieve exam success.
Shigellosis infectious does
10-100 cells
Salmonella infectious dose
high
Epidemiology
Branch of medical science concerned with the incidence, distribution, and control of
diseases that affect large numbers of people.
infectious dose
minimum number of microbes required for infection to proceed
Incubation period
interval between initial infection and first signs and symptoms
localized infection
an infection that is limited to a specific location in the body and has local symptoms
systemic infection
an infection throughout the body
Bacterimia
bacteria in the blood
Koch's Postulates
Set of rules for proving that a microorganism causes a specific disease.
Toxemia
toxins in the blood
Viremia
viruses in the blood
adherence
bacteria attaches to your cells glycoproteins
balanced pathogenicity
The pathogen becomes less virulent while the host becomes less susceptible
what do bacteria use to adhere to host cells
pilli/capsle
,Mucosal-associated lymphoid tissue (MALT)
immune cells found in the gut and the respiratory organs
Direct Damage
physical damage to property that results from the inability to use the damaged property
Indirect damage
host response is inappropriate and excessive
examples of endotoxins
E.coli, (vibrio) cholera, salmonella
AB toxins
exotoxin- Consist of two subunits, A and B
-Work by binding to host cell receptor (B subunit) and transferring damaging agent (A
subunit) across the cell membrane
-Examples: diphtheria toxin, tetanus toxin, botulinum toxin
examples of exotoxins
diphtheria which destroys the psuedomembrane
Exotoxins
toxic substances that bacteria secrete into their environment
Endotoxins
A toxic component of the outer membrane of certain gram-negative bacteria that is
released only when the bacteria die.
Toxoids
inactivated exotoxins used in vaccines
antitoxins
antibodies against specific exotoxins
Exfoliation
scalded skin syndrome
Lipid A
The lipid component of lipopolysaccharide, which is released from dead Gram-negative
bacterial cells and can trigger shock and other symptoms in human hosts.
Ignaz Semmelweis
advocated hand washing to prevent transmission of puerperal fever from one OB
patient to another
communicable disease
a disease that is spread from one host to another
non-communicable disease
A disease that cannot be spread from person to person
endemic
always present in a population
sporadic disease
disease that occurs occasionally in a population
epidemic
A widespread outbreak of an infectious disease.
outbreak
A sudden rise in the incidence of a disease
pandemic
, Disease that occurs over a wide geographic area and affects a very high proportion of
the population.
attack rate
an incidence rate calculated for a particular population for a single disease outbreak and
expressed as a percentage
Basic reproduction number (R0)
the number of expected secondary transmissions from each single case of a disease in
an entirely susceptible population
Prevelance
The number or proportion of cases of a particular disease or condition present in a
population at a given time.
Morbidity
Refers to ill health in an individual and the levels of ill health in a population or group.
mortality
death
case fatality rate
percentage of population that dies from a specific disease
Reservoir of infection
a continual source of infection
direct transmission
Transmission of blood or body fluids through touching (including shaking hands),
kissing, coughing, sneezing, and talking.
indirect contact
Exposure or transmission of disease from one person to another by contact with a
contaminated object.
droplet transmission
transmission via airborne droplets less than 1 meter
vector-borne transmission
The use of an animal to spread an organism from one person or place to another.
vechicle borne
transmission via food, water, blood, and other biological sources, and fomites can be a
source of contamination
Biological transmission
pathogen reproduces in the vector; transmitted via bites or feces
hardest type of reservoir to eradicate
environmental
Yersinia pestis
bubonic plague
mechanical vector
not necessary to the life cycle of an infectious agent and merely transports it without
being infected
portal of entry
any body opening on an uninfected person that allows pathogens to enter
cdc
Centers for Disease Control and Prevention
who
