Which of the following is a communicable disease?
a) Diabetes
b) Cancer
c) Influenza ✅
d) Asthma Explanation: Influenza is caused by a virus and spreads from person to person.
Tuberculosis is caused by which organism?
a) Virus
b) Bacterium ✅
c) Fungus
d) Parasite Explanation: TB is caused by the bacterium Mycobacterium tuberculosis.
Which body system is affected by pneumonia?
a) Digestive
b) Respiratory ✅
c) Nervous
d) Skeletal Explanation: Pneumonia affects the lungs and airways.
How is malaria transmitted?
a) Airborne droplets
b) Contaminated food
c) Mosquito bite ✅
d) Direct skin contact Explanation: Malaria is transmitted through the bite of an infected female Anopheles mosquito.
The HIV virus causes:
a) Tuberculosis
b) AIDS ✅
c) Hepatitis
d) Flu Explanation: HIV (Human Immunodeficiency Virus) causes AIDS.
Which of the following is a symptom of measles?
a) Chest pain
b) Skin rash ✅
c) Diarrhea
d) Swollen joints Explanation: Measles presents with a characteristic skin rash and fever.
Chickenpox is caused by a:
a) Bacterium
b) Virus ✅
c) Fungus
d) Protozoa Explanation: The varicella-zoster virus causes chickenpox.
A vaccine is used to:
a) Treat infections
b) Diagnose disease
c) Prevent disease ✅
d) Relieve symptoms Explanation: Vaccines stimulate immunity to prevent future infections.
Hepatitis B affects which organ?
a) Heart
b) Brain
c) Liver ✅
d) Kidneys Explanation: Hepatitis B is a liver infection caused by the HBV virus.
The BCG vaccine is given to prevent:
a) Malaria
b) Polio
c) Tuberculosis ✅
d) Measles Explanation: BCG (Bacille Calmette-Guérin) vaccine protects against TB.
The common cold is spread through:
a) Food
b) Airborne droplets ✅
c) Mosquito bites
d) Blood transfusion Explanation: Cold viruses spread through coughing, sneezing, and contact with surfaces.
Which of the following diseases can be prevented by a vaccine?
a) Typhoid ✅
b) Diabetes
c) Arthritis
d) Hypertension Explanation: Typhoid fever can be prevented with the typhoid vaccine.
Dengue is spread by which mosquito?
a) Anopheles
b) Culex
c) Aedes ✅
d) Tsetse Explanation: Aedes aegypti mosquitoes transmit the dengue virus.
Ringworm is caused by a:
a) Virus
b) Fungus ✅
c) Bacteria
d) Parasite Explanation: Ringworm is a fungal infection affecting the skin.
Which of these is a vector-borne disease?
a) Asthma
b) Typhoid
c) Malaria ✅
d) Hypertension Explanation: Malaria is transmitted by mosquitoes (vectors).
Hepatitis A is usually transmitted by:
a) Air
b) Blood
c) Contaminated food and water ✅
d) Skin contact Explanation: Hepatitis A spreads through the fecal-oral route.
Which of the following is a bacterial infection?
a) Influenza
b) Tuberculosis ✅
c) HIV
d) Dengue Explanation: TB is caused by bacteria.
Rabies is transmitted by:
a) Mosquito
b) Contaminated food
c) Animal bite ✅
d) Airborne droplets Explanation: Rabies is spread through bites from infected animals.
Which symptom is common to many communicable diseases?
a) Rash
b) Fever ✅
c) Weight gain
d) Joint stiffness Explanation: Fever is a typical response to infection.
Polio can lead to:
a) Blindness
b) Paralysis ✅
c) Liver damage
d) Lung infection Explanation: Polio virus attacks the nervous system, causing paralysis.
Which disease is caused by a protozoan parasite?
a) Measles
b) Tuberculosis
c) Malaria ✅
d) Hepatitis Explanation:Plasmodium protozoa cause malaria.
Which communicable disease affects the nervous system?
a) Polio ✅
b) Typhoid
c) Influenza
d) Cholera Explanation: Poliovirus affects motor neurons in the spinal cord.
Which is the most effective method to prevent the spread of COVID-19?
a) Antibiotics
b) Vaccination ✅
c) Fungal creams
d) Cold compress Explanation: COVID-19 prevention includes vaccines, masks, and hygiene.
Which disease is spread through contaminated water?
a) Malaria
b) Cholera ✅
c) Influenza
d) Tuberculosis Explanation: Cholera spreads via ingestion of water contaminated with Vibrio cholerae.
The infectious agent in the flu is a:
a) Virus ✅
b) Bacterium
c) Fungus
d) Protozoa Explanation: Influenza is caused by the influenza virus.
Typhoid is caused by which bacterium?
a) Escherichia coli
b) Staphylococcus aureus
c) Salmonella typhi ✅
d) Mycobacterium tuberculosis Explanation:Salmonella typhi causes typhoid fever.
What is the incubation period of HIV?
a) A few hours
b) 1–2 days
c) Several years ✅
d) 1 week Explanation: HIV can take years to progress to AIDS.
Which of the following is an airborne disease?
a) Malaria
b) Dengue
c) Tuberculosis ✅
d) Hepatitis B Explanation: TB spreads through airborne droplets from coughs/sneezes.
DPT vaccine protects against:
a) Diabetes, Pneumonia, TB
b) Diphtheria, Pertussis, Tetanus ✅
c) Dengue, Polio, TB
d) Diarrhea, Pneumonia, Tetanus Explanation: DPT immunizes against 3 serious bacterial diseases.
Which disease can be transmitted by sharing needles?
a) Dengue
b) HIV/AIDS ✅
c) Malaria
d) Tuberculosis Explanation: Sharing needles increases risk of bloodborne diseases like HIV.
What is the first sign of rabies in humans?
a) Paralysis
b) Headache and fever ✅
c) Vomiting
d) Itching of hands Explanation: Early rabies symptoms are flu-like.
Which communicable disease primarily affects the liver?
a) Typhoid
b) Hepatitis B ✅
c) Measles
d) Malaria Explanation: Hepatitis B causes inflammation of the liver.
An example of a zoonotic disease is:
a) AIDS
b) COVID-19 ✅
c) Polio
d) Cholera Explanation: Zoonotic diseases are transmitted from animals to humans (e.g., COVID-19).
Cholera leads to:
a) High blood sugar
b) Severe dehydration ✅
c) Jaundice
d) Breathing issues Explanation: Cholera causes rapid loss of fluids through diarrhea.
Which is NOT a method of controlling communicable diseases?
a) Immunization
b) Hygiene
c) Quarantine
d) Smoking ✅ Explanation: Smoking increases health risks, not disease prevention.
Leprosy is caused by:
a) Treponema pallidum
b) Mycobacterium leprae ✅
c) Plasmodium vivax
d) Salmonella typhi Explanation: Leprosy is a bacterial disease affecting skin and nerves.
SARS is caused by a:
a) Bacteria
b) Fungus
c) Virus ✅
d) Protozoa Explanation: SARS (Severe Acute Respiratory Syndrome) is caused by a coronavirus.
Which disease is characterized by persistent cough with blood?
a) Malaria
b) TB ✅
c) Dengue
d) Typhoid Explanation: TB often presents with chronic cough, sometimes with blood.
Which of these is NOT a symptom of COVID-19?
a) Fever
b) Cough
c) Sudden weight gain ✅
d) Loss of smell Explanation: Sudden weight gain is not typical of COVID-19.
The MMR vaccine protects against:
a) Measles, Mumps, Rubella ✅
b) Malaria, Measles, Rabies
c) Mumps, Malaria, Ringworm
d) Measles, Malaria, Rabies Explanation: MMR vaccine is a triple protection vaccine for children.
Which virus causes Ebola?
a) Retrovirus
b) Filovirus ✅
c) Coronavirus
d) Adenovirus Explanation: Ebola is caused by a virus in the Filoviridae family.
What is the mode of transmission for Hepatitis C?
a) Airborne
b) Mosquito
c) Blood and bodily fluids ✅
d) Food Explanation: Hepatitis C spreads through contaminated blood.
The causative agent of diphtheria is:
a) Corynebacterium diphtheriae ✅
b) Neisseria gonorrhoeae
c) Haemophilus influenzae
d) Streptococcus pneumoniae Explanation: This bacterium produces toxins affecting the throat.
An infection acquired in a hospital is called:
a) Zoonotic
b) Nosocomial ✅
c) Endemic
d) Opportunistic Explanation: Nosocomial infections are hospital-acquired.
Kala-azar is transmitted by:
a) Tsetse fly
b) Mosquito
c) Sand fly ✅
d) Housefly Explanation: Leishmaniasis (Kala-azar) is transmitted by the bite of infected sand flies.
The vector for yellow fever is:
a) Tick
b) Tsetse fly
c) Aedes mosquito ✅
d) Black fly Explanation: Aedes aegypti transmits yellow fever virus.
Which of these is a helminthic disease?
a) Cholera
b) Ascariasis ✅
c) Typhoid
d) Measles Explanation: Ascariasis is caused by intestinal roundworms.
Anthrax can be spread through:
a) Contaminated water
b) Inhalation of spores ✅
c) Mosquito bite
d) Direct person-to-person contact Explanation: Inhalation of Bacillus anthracis spores causes pulmonary anthrax.
Which communicable disease can cause microcephaly in newborns?
a) Dengue
b) Zika virus infection ✅
c) Influenza
d) Rubella Explanation: Zika virus infection during pregnancy can lead to microcephaly.
Which disease has been eradicated globally?
a) Polio
b) Measles
c) Smallpox ✅
d) Tuberculosis Explanation: Smallpox was declared eradicated in 1980 by WHO.
Which of the following is spread by contaminated food or water?
a) Typhoid ✅
b) Malaria
c) Dengue
d) Polio Explanation: Typhoid is a waterborne disease caused by Salmonella typhi.
COVID-19 is caused by which virus?
a) Influenza A
b) SARS-CoV-2 ✅
c) Zika
d) HIV Explanation: SARS-CoV-2 is the virus responsible for COVID-19.
Which disease is also known as German measles?
a) Mumps
b) Rubella ✅
c) Smallpox
d) Polio Explanation: Rubella is often referred to as German measles.
A common symptom of dengue is:
a) Joint pain ✅
b) Vomiting
c) Cough
d) Skin ulcers Explanation: Dengue often causes severe joint and muscle pain.
Chickenpox mainly spreads through:
a) Contaminated food
b) Airborne droplets ✅
c) Mosquito bites
d) Contaminated needles Explanation: Chickenpox spreads through coughing and sneezing.
Which of the following is a fungal disease?
a) Athlete’s foot ✅
b) Influenza
c) Typhoid
d) Tuberculosis Explanation: Athlete’s foot is caused by a fungus.
Which disease is characterized by intense coughing fits?
a) Tetanus
b) Pertussis (Whooping cough) ✅
c) Pneumonia
d) Hepatitis Explanation: Pertussis causes severe coughing with a “whoop” sound.
Which microorganism causes cholera?
a) Salmonella typhi
b) Vibrio cholerae ✅
c) E. coli
d) Staphylococcus aureus Explanation:Vibrio cholerae causes cholera.
Which vaccine is used against polio?
a) BCG
b) MMR
c) OPV ✅
d) Hepatitis B Explanation: OPV stands for Oral Polio Vaccine.
How is Hepatitis B commonly transmitted?
a) Air
b) Contaminated water
c) Blood and bodily fluids ✅
d) Mosquitoes Explanation: Hepatitis B spreads via contact with infected bodily fluids.
A key symptom of meningitis is:
a) Skin rash
b) Stiff neck ✅
c) Swollen feet
d) Shortness of breath Explanation: Meningitis often presents with neck stiffness and fever.
What causes the flu?
a) Bacteria
b) Virus ✅
c) Parasite
d) Fungus Explanation: Influenza is a viral illness.
Ringworm is also known as:
a) Tinea ✅
b) Scabies
c) Psoriasis
d) Vitiligo Explanation: Ringworm is a fungal skin infection also called tinea.
Which organ is mainly affected by tuberculosis?
a) Brain
b) Lungs ✅
c) Liver
d) Heart Explanation: TB primarily affects the lungs.
Scabies is caused by:
a) Virus
b) Bacterium
c) Mite ✅
d) Fungus Explanation: Scabies is caused by a microscopic mite burrowing into the skin.
Rabies vaccine is given:
a) Before exposure only
b) After exposure only
c) Both before and after exposure ✅
d) Not available Explanation: Rabies vaccine can be preventive or post-exposure.
Which disease causes skin lesions and nerve damage?
a) Leprosy ✅
b) Measles
c) Ringworm
d) Typhoid Explanation: Leprosy affects the skin and peripheral nerves.
Which disease is NOT transmitted by mosquitoes?
a) Malaria
b) Zika
c) HIV ✅
d) Dengue Explanation: HIV is spread through blood and bodily fluids, not insects.
Who discovered the tuberculosis bacterium?
a) Edward Jenner
b) Robert Koch ✅
c) Alexander Fleming
d) Louis Pasteur Explanation: Koch discovered Mycobacterium tuberculosis in 1882.
One way to control communicable diseases is:
a) Ignoring symptoms
b) Antibiotics for all diseases
c) Public awareness campaigns ✅
d) Avoiding exercise Explanation: Educating the public helps prevent disease spread.
Syphilis is caused by:
a) Treponema pallidum ✅
b) Neisseria gonorrhoeae
c) Mycoplasma
d) Chlamydia trachomatis Explanation: Syphilis is a sexually transmitted infection caused by a spirochete bacterium.
Which virus causes mumps?
a) Mumps virus ✅
b) Rubella virus
c) Rotavirus
d) Influenza virus Explanation: Mumps is caused by the mumps virus.
Kala-azar is caused by:
a) Virus
b) Bacteria
c) Protozoa ✅
d) Fungi Explanation: Kala-azar is caused by Leishmania donovani, a protozoan.
The full form of AIDS is:
a) Auto Immune Disease Syndrome
b) Acquired Immune Deficiency Syndrome ✅
c) Acquired Infection Disease Syndrome
d) Antibody Induced Deficiency Syndrome Explanation: AIDS results from long-term HIV infection.
Typhoid is mainly diagnosed using:
a) Sputum test
b) Widal test ✅
c) X-ray
d) CT scan Explanation: Widal test checks for antibodies against typhoid bacteria.
Which disease can be prevented by TT injection?
a) Tuberculosis
b) Tetanus ✅
c) Typhoid
d) Measles Explanation: TT stands for Tetanus Toxoid.
The causative agent of the plague is:
a) Bacillus anthracis
b) Yersinia pestis ✅
c) Salmonella
d) Shigella Explanation:Yersinia pestis caused the Black Death.
Which viral disease causes parotid gland swelling?
a) Measles
b) Mumps ✅
c) Rubella
d) Hepatitis Explanation: Mumps infects the salivary glands.
Antiretroviral drugs are used to treat:
a) Hepatitis B
b) HIV/AIDS ✅
c) Tuberculosis
d) Cholera Explanation: These drugs help manage HIV.
Rotavirus causes:
a) Respiratory infection
b) Diarrhea ✅
c) Skin infection
d) Ear infection Explanation: It is a leading cause of viral diarrhea in infants.
Which disease spreads via fecal-oral route?
a) HIV
b) Hepatitis A ✅
c) Hepatitis B
d) Dengue Explanation: Contaminated food and water spread Hepatitis A.
Dengue fever is also called:
a) Breakbone fever ✅
b) Jungle fever
c) Water fever
d) Rash fever Explanation: Because of the severe joint pain.
Pneumonia can be caused by:
a) Bacteria
b) Viruses
c) Fungi
d) All of the above ✅ Explanation: Pneumonia has multiple infectious causes.
Scarlet fever is a complication of:
a) TB
b) Strep throat ✅
c) Measles
d) Rubella Explanation: It is caused by Streptococcus pyogenes.
Gonorrhea is a:
a) Viral STI
b) Bacterial STI ✅
c) Fungal STI
d) Parasitic STI Explanation: Caused by Neisseria gonorrhoeae.
Boils on the skin are often caused by:
a) Staphylococcus aureus ✅
b) E. coli
c) Salmonella
d) Bacillus Explanation: Common skin infection bacterium.
Tetanus affects the:
a) Digestive system
b) Respiratory system
c) Nervous system ✅
d) Circulatory system Explanation: Tetanus toxin affects nerves and muscles.
Which of the following is sexually transmitted?
a) Tuberculosis
b) HIV ✅
c) Dengue
d) Leprosy Explanation: HIV is transmitted through sexual contact.
Which disease is prevented using mosquito nets?
a) TB
b) Malaria ✅
c) COVID-19
d) Measles Explanation: Nets prevent mosquito bites at night.
What type of microorganism causes measles?
a) Virus ✅
b) Bacterium
c) Fungus
d) Parasite Explanation: Measles is caused by the Rubeola virus.
Which disease is associated with the Aedes albopictus mosquito?
a) Zika ✅
b) Cholera
c) TB
d) Syphilis Explanation: This mosquito species spreads the Zika virus.
A rare but severe form of TB is called:
a) Primary TB
b) Miliary TB ✅
c) Latent TB
d) Chronic TB Explanation: Miliary TB spreads throughout the body.
Which disease is transmitted via the feces of triatomine bugs?
a) Lyme disease
b) Chagas disease ✅
c) Leprosy
d) Anthrax Explanation: Caused by Trypanosoma cruzi.
Creutzfeldt-Jakob disease is caused by:
a) Virus
b) Bacterium
c) Prion ✅
d) Fungus Explanation: CJD is a rare, fatal prion disease.
What type of disease is scarlatina?
a) Viral
b) Bacterial ✅
c) Parasitic
d) Fungal Explanation: It’s an older term for scarlet fever.
Which test confirms HIV infection?
a) ELISA ✅
b) PCR
c) CBC
d) Liver function test Explanation: ELISA detects HIV antibodies.
Which organ is damaged in advanced syphilis?
a) Heart
b) Brain ✅
c) Liver
d) Skin Explanation: Neurosyphilis affects the brain and spinal cord.
Which disease causes swelling of the lymph nodes and groin?
a) Elephantiasis ✅
b) Hepatitis
c) Measles
d) Scabies Explanation: Caused by filarial worms blocking lymph vessels.
The term ‘carrier’ in communicable diseases refers to:
a) A person who cannot get infected
b) A person who transmits disease without showing symptoms ✅
c) A doctor
d) A vaccine Explanation: Asymptomatic carriers can spread infections.
Which of the following is not a viral disease?
a) Mumps
b) Rabies
c) Cholera ✅
d) Influenza Explanation: Cholera is bacterial.