Biology ยท Science General

Disease Causative Agents

2,531 Questions

Disease causative agents questions test your understanding of viral, bacterial, and fungal infections, along with their transmission methods. These are common topics in general science sections of SSC and railways exams. Practice these questions to accurately identify disease pathogens and symptoms.

Viral diseasesFoodborne illnessesDisease transmission methodsExtrinsic disease factorsCommon pathogens

Disease Causative Agents Questions

Multiple choice

What is the most common cause of food poisoning in the United States?

  1. Salmonella

  2. Clostridium perfringens

  3. Staphylococcus aureus

  4. Escherichia coli
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Salmonella is the most common cause of food poisoning in the United States, causing an estimated 1 million cases of illness each year.

Multiple choice

What is the most common cause of infectious diarrhea in children under 5 years old?

  1. Rotavirus

  2. Shigella

  3. Salmonella

  4. Campylobacter
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Rotavirus is the most common cause of infectious diarrhea in children under 5 years old, causing an estimated 2 million deaths each year.

Multiple choice

What is the most common cause of acute otitis media (middle ear infection)?

  1. Bacteria

  2. Viruses

  3. Fungi

  4. All of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Bacteria, such as Streptococcus pneumoniae and Haemophilus influenzae, are the most common cause of acute otitis media. Viruses and fungi can also cause middle ear infections, but they are less common.

Multiple choice

What is the most common cause of prostatitis?

  1. Bacterial infection

  2. Viral infection

  3. Fungal infection

  4. Parasite infection
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Bacterial infection is the most common cause of prostatitis. The bacteria can enter the prostate gland through the urethra, the tube that carries urine out of the body.

Multiple choice

What is the primary cause of poultry-related foodborne illness?

  1. Salmonella

  2. E. coli

  3. Campylobacter

  4. Listeria
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Campylobacter is the most common cause of poultry-related foodborne illness, followed by Salmonella and E. coli.

Multiple choice

Which of the following is NOT a common sexually transmitted infection (STI) among adolescents?

  1. Chlamydia

  2. Gonorrhea

  3. Syphilis

  4. Hepatitis B
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Hepatitis B is not typically a common STI among adolescents. Chlamydia, gonorrhea, and syphilis are more prevalent among adolescents.

Multiple choice

Which of the following is NOT a factor that can contribute to the spread of infectious diseases?

  1. Poor sanitation

  2. Lack of access to clean water

  3. Good nutrition

  4. Overcrowding
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Good nutrition can help to boost the immune system and make people less susceptible to infection.

Multiple choice

Which of the following is NOT a type of infectious disease?

  1. Bacterial infection

  2. Viral infection

  3. Fungal infection

  4. Parasitic infection
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Parasitic infections are caused by parasites, which are organisms that live in or on other organisms and obtain nutrients from them.

Multiple choice

Which of the following is NOT a type of infectious disease that can be spread through contact with contaminated food or water?

  1. Typhoid fever

  2. Cholera

  3. Hepatitis A

  4. Influenza
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Influenza is a respiratory infection that is spread through contact with respiratory droplets.

Multiple choice

Which of the following is NOT a type of infectious disease that can be spread through contact with an infected person?

  1. Measles

  2. Mumps

  3. Rubella

  4. Malaria
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Malaria is a parasitic infection that is spread through the bite of an infected mosquito.

Multiple choice

Which of the following is NOT a type of infectious disease that can be spread through contact with an infected animal?

  1. Rabies

  2. Lyme disease

  3. West Nile virus

  4. Tetanus
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Tetanus is a bacterial infection that is spread through contact with contaminated soil or objects.

Multiple choice

Which of the following is NOT a type of infectious disease that can be spread through contact with an infected bird?

  1. Avian influenza

  2. West Nile virus

  3. Eastern equine encephalitis

  4. Lyme disease
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Lyme disease is a bacterial infection that is spread through the bite of an infected tick.

Multiple choice

Which of the following is NOT a type of infectious disease that can be spread through contact with an infected rodent?

  1. Plague

  2. Hantavirus pulmonary syndrome

  3. Leptospirosis

  4. Lyme disease
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Lyme disease is a bacterial infection that is spread through the bite of an infected tick.

Multiple choice

Which of the following is NOT a type of infectious disease that can be spread through contact with an infected reptile?

  1. Salmonella

  2. E. coli

  3. Campylobacter

  4. Shigella
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Shigella is a bacterial infection that is spread through contact with contaminated food or water.

Multiple choice

Which of the following is NOT a type of infectious disease that can be spread through contact with an infected fish?

  1. Vibrio vulnificus

  2. Vibrio parahaemolyticus

  3. Salmonella

  4. E. coli
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

E. coli is a bacterial infection that is spread through contact with contaminated food or water.