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Quizzes > Health & Medicine > Diseases & Conditions

Which Does Not Spread Communicable Diseases?

Think you can ace this disease transmission quiz? Find out what won't spread communicable diseases!

Difficulty: Moderate
2-5mins
Learning OutcomesCheat Sheet
Paper art style quiz header showing microscope shield virus question mark icons on dark blue background.

Curious about which one of the following would not spread communicable diseases? Dive into our free public health trivia - style disease transmission quiz to test your understanding of how infections travel and discover which scenarios pose no risk. You'll learn the mechanics of direct and indirect spread and see if you can ace our communicable diseases quiz . Whether you've already tried the popular communicable and noncommunicable diseases quiz or this is your first round, get ready to challenge your mind, boost your knowledge in our how diseases spread quiz, and take action for healthier communities. This engaging quiz is perfect for students, educators, or anyone passionate about staying informed and making safer choices. Click start now and find out how you score!

Which of the following is not a route of communicable disease transmission?
Respiratory droplets
Direct contact
Fecal-oral route
Cooked food ingestion
Cooked food ingestion typically does not transmit communicable diseases because proper cooking eliminates pathogens. CDC Food Safety
Which of these animals is not considered a common vector for human communicable diseases?
Mosquito
Tick
Flea
Rabbit
Rabbits are not typical vectors for communicable diseases like mosquitoes, ticks, and fleas. CDC Vectors
Which body fluid is not typically associated with transmitting communicable diseases?
Sweat
Blood
Semen
Saliva
Sweat generally does not carry pathogens at levels sufficient to transmit disease. CDC HIV Transmission
Which household item is least likely to act as a fomite for disease transmission?
Wooden pencil
Light switch
Doorknob
TV remote
Wooden pencils are less commonly shared surfaces and less hospitable to pathogens than high-touch surfaces. CDC Infection Control
Which food is least likely to spread communicable diseases?
Raw chicken
Unpasteurized milk
Freshly baked bread
Runny eggs
Freshly baked bread is cooked at high temperatures, eliminating pathogens that cause foodborne illnesses. FDA Food Safety
Which of the following is not a mode of fecal-oral disease transmission?
Contaminated water
Poor hand hygiene
Handwashing with soap
Raw seafood
Handwashing with soap interrupts fecal-oral transmission, so it is not a mode of transmission. CDC Water, Sanitation, Hygiene
Which bodily action does not typically spread respiratory pathogens?
Talking
Sweating
Coughing
Sneezing
Sweating is not a way respiratory pathogens are expelled. CDC Flu Prevention
Which of these personal items is least likely to spread skin pathogens?
Sunglasses
Nail clipper
Towel
Razor blade
Sunglasses rarely come into contact with skin pathogens, unlike items that cut or abrade skin. CDC Hygiene
Which vector does not transmit malaria?
Anopheles mosquito
Aedes mosquito
Female Anopheles gambiae
Culex mosquito
Malaria is transmitted by Anopheles mosquitoes, not Culex species. WHO Malaria
Which microbe is not a virus?
Norovirus
Mycobacterium tuberculosis
Hepatitis B
Influenza
Mycobacterium tuberculosis is a bacterium, not a virus, though it causes communicable disease. CDC TB Basics
Which of these surfaces is least conducive to pathogen survival?
Stainless steel
Dry plastic
Porous cloth
Copper
Copper has antimicrobial properties that kill many pathogens more quickly than other surfaces. NCBI Copper Surfaces
Which of the following is not a typical zoonotic disease?
Influenza A
Lyme disease
Tetanus
Rabies
Tetanus is caused by Clostridium tetani spores in the environment, not animal transmission. CDC Tetanus
Which personal protective equipment does not protect against airborne pathogens?
Surgical mask
PAPR
N95 respirator
Face shield
Face shields alone do not filter airborne particles, they only block splashes. CDC PPE
Which action does not reduce fecal-oral transmission?
Handwashing with soap
Refrigerating cooked food
Using latrines
Flushing toilets
Refrigeration preserves food and doesn't eliminate pathogens that may already be present. WHO Diarrheal Disease
Which of these pairs does not represent an indirect transmission route?
Contaminated food
Airborne dust
Direct handshake
Contaminated water
Direct handshake is direct contact transmission, not an indirect route. CDC Handwashing
Which organ is not commonly involved in systemic spread of a viral infection?
Spleen
Lymph nodes
Liver
Heart valves
While viruses can affect many organs, heart valves are less common primary sites for viral replication. Systemic Viral Infections
Which of these is not considered a contact precaution in healthcare settings?
Dedicated equipment
Surgical mask
Gown and gloves
Hand hygiene
Surgical masks are for droplet precautions, not contact precautions. CDC Precautions
Which of these diseases is not primarily transmitted through respiratory droplets?
Measles
Common cold
Hepatitis A
Tuberculosis
Hepatitis A is transmitted via the fecal-oral route, not respiratory droplets. CDC Hepatitis A
Which laboratory specimen is least likely to carry bloodborne pathogens?
Tissue biopsy
Serum
Urine
Blood
Urine typically has low risk of bloodborne pathogens unless contaminated with blood. CDC Disinfection
Which item in a hospital ward is least likely to harbor multidrug-resistant organisms?
Bed rails
Infusion pump buttons
Patient's book
Over-bed table
A patient's personal book is less frequently touched by multiple caregivers compared to medical equipment and surfaces. CDC HAIs
Which of the following does not increase the risk of nosocomial infections?
Telemedicine consultations
Prolonged hospital stay
Invasive devices
High patient turnover
Telemedicine avoids physical contact and reduces the risk of hospital-acquired infections. CDC HAI Prevention
Which of the following is not an example of droplet precautions?
N95 respirator for airborne agents
Patient mask during transport
Private room
Surgical mask for caregivers
N95 respirators are used for airborne precautions, not droplet precautions. CDC Infection Control
Which of these bacteria does not typically spread via respiratory droplets?
Haemophilus influenzae
Escherichia coli
Streptococcus pneumoniae
Mycobacterium tuberculosis
E. coli primarily spreads via the fecal-oral route, not respiratory droplets. CDC E. coli
Which environment does not favor airborne fungal spore transmission?
Decaying vegetation
Compost piles
Sterile operating room
Damp basements
Sterile ORs maintain filtered air, preventing fungal spore dispersal. CDC Fungal Diseases
Which hepatitis virus is least likely transmitted through intravenous drug use?
Hepatitis C
Hepatitis D
Hepatitis A
Hepatitis B
Hepatitis A is mainly fecal-oral, not bloodborne. CDC Hepatitis A
Which of the following is not used for environmental disinfection to prevent healthcare-associated infections?
Autoclave
Alcohol-based hand rub
Chlorine solutions
UV light
Alcohol-based hand rubs disinfect hands, not environmental surfaces. CDC Disinfection Guidelines
Which gene mutation is not associated with antibiotic resistance in bacteria?
lacZ gene mutation
mecA gene in MRSA
Beta-lactamase gene
gyrA mutation for fluoroquinolone resistance
The lacZ gene is part of lactose metabolism in bacteria, not related to antibiotic resistance mechanisms. Antibiotic Resistance Overview
Which of the following viruses is not enveloped?
SARS-CoV-2
Influenza A
Norovirus
Hepatitis C
Norovirus is a non-enveloped virus, making it more resistant to disinfectants than enveloped viruses. CDC Norovirus
Which cellular structure is targeted by alcohol-based disinfectants?
Cell membrane
Cell wall
Ribosomes
Nucleic acids
Alcohol-based disinfectants dissolve lipid membranes, compromising microbial cell membranes and leading to cell death. WHO Local Production Guide
Which of these is not an example of a prion disease?
Rabies
Creutzfeldt-Jakob disease
Bovine spongiform encephalopathy
Kuru
Rabies is caused by a lyssavirus, not a prion; prion diseases are misfolded protein disorders. CDC Prion Diseases
Which nucleic acid detection method is not commonly used for rapid pathogen identification?
LAMP
PCR
ELISA
RT-PCR
ELISA detects antigens or antibodies, not directly nucleic acids. WHO Molecular Methods
Which of these is not a standard step in vaccine cold chain maintenance?
Exposure to sunlight
Temperature monitoring
Use of insulated containers
Regular equipment maintenance
Exposure to sunlight can heat vaccines and disrupt the cold chain; it's not part of maintenance. WHO Vaccine Storage
Which chemical fixation agent is not used in pathogen inactivation for vaccines?
Ethanol
Formaldehyde
Glutaraldehyde
Beta-propiolactone
Glutaraldehyde is used for tissue fixation and sterilization but not commonly used to inactivate pathogens in vaccine production. Vaccine Inactivation Methods
Which of the following agents is not a spore-forming bacterium?
Bacillus anthracis
Listeria monocytogenes
Clostridium botulinum
Clostridium difficile
Listeria monocytogenes does not form spores; it is a non-spore-forming bacterium that can still cause severe infections. CDC Listeria
Which surveillance method is not used for early detection of outbreaks?
Randomized controlled trial
Event-based surveillance
Syndromic surveillance
Sentinel surveillance
Randomized controlled trials are used to evaluate interventions, not for surveillance or outbreak detection. WHO Surveillance
Which immunological assay does not require live pathogen antigens?
Hemagglutination inhibition assay
Virus neutralization test
ELISA
Plaque assay
ELISA can use recombinant or inactivated antigens, so it doesn't require live agents. ELISA Methods
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Study Outcomes

  1. Identify Non-Transmission Agents -

    Recognize which one of the following would not spread communicable diseases by applying principles from our communicable diseases quiz.

  2. Differentiate Transmission Pathways -

    Distinguish between direct and indirect modes of infection in this disease transmission quiz to understand how contagion occurs.

  3. Apply Prevention Strategies -

    Use realistic scenarios from the how diseases spread quiz to determine effective control measures and minimize risk.

  4. Analyze Risk Factors -

    Evaluate situational clues in the quiz to identify key risk factors and protect against common routes of infection.

  5. Reinforce Public Health Concepts -

    Engage with public health trivia to solidify your understanding of infection control and best practices for disease prevention.

Cheat Sheet

  1. Identifying Non-communicable Diseases -

    When tackling the communicable diseases quiz question "which one of the following would not spread communicable diseases," recall that non-communicable diseases (NCDs) like diabetes, heart disease, and most cancers involve no infectious agent and cannot transfer between people. Use the mnemonic "GEL" (Genetic, Environmental, Lifestyle factors) to remember key NCD categories (WHO).

  2. Contact Transmission vs Non-infectious Conditions -

    Direct contact spreads pathogens such as Staphylococcus aureus via skin-to-skin touch, whereas non-infectious conditions like eczema or osteoarthritis have no transmissible organism. Reviewing CDC contact precaution guidelines helps distinguish real transmission risks from benign exposures.

  3. Distinguishing Droplet and Airborne Spread -

    Droplet transmission uses respiratory particles >5 µm (e.g., influenza), traveling only ~1 meter, while airborne <5 µm droplets linger and travel farther (e.g., measles). The "MAD" mnemonic (Measles, TB, Aspergillus) aids recall of common airborne pathogens (NIH).

  4. Vector-Borne Transmission Mechanisms -

    Diseases like malaria or Lyme disease require a mosquito or tick vector to carry pathogens between hosts; casual contact with the vector alone, without pathogen carriage, poses no disease risk. The CDC's vector index illustrates when vector populations cross infection thresholds.

  5. Fomite and Vehicle Transmission Essentials -

    Contaminated surfaces, food, or water can harbor pathogens such as norovirus, but sterile medical tools and sealed packaging are not sources of transmission. WHO surface disinfection standards clarify which items truly serve as vehicles for disease spread.

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