Question:
Which of the following pairs of the disease and it's etiological agent is not correct?
Which of the following pairs of the disease and it's etiological agent is not correct?
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Do not let the word "cholera" confuse you. Human cholera is caused by Vibrio cholerae, but fowl cholera is a pasteurellosis caused by Pasteurella multocida.
Updated On: Aug 3, 2026
- Fowl cholera- Vibrio cholerae
- Duck plague-Alphaherpesvirus 1
- Fowl plague-highly pathogenic avian influenza viruses (HPAIV)
- Human Bubonic plague-Yersinia pestis
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The Correct Option is A
Solution and Explanation
Step 1: Understanding the Concept:
Correctly associating infectious diseases with their specific etiological agents is a fundamental requirement in veterinary microbiology and epidemiology.
Step 2: Detailed Explanation:
Let us analyze each pair of disease and etiological agent:
- Fowl cholera - Vibrio cholerae (A): This pair is incorrect. Fowl cholera is a severe contagious disease of poultry caused by the bacterium Pasteurella multocida (a Gram-negative coccobacillus). Vibrio cholerae is the causative agent of human cholera, which is a completely different water-borne diarrheal disease. Thus, this pair is incorrect.
- Duck plague - Alphaherpesvirus 1 (B): Duck plague, also known as duck viral enteritis, is indeed caused by Anatid alphaherpesvirus 1 (a member of the family Herpesviridae). This pair is correct.
- Fowl plague - highly pathogenic avian influenza viruses (HPAIV) (C): Historically, "fowl plague" was the term used to describe devastating outbreaks of systemic disease in poultry, which was later determined to be caused by highly pathogenic avian influenza (HPAI) strains. This pair is correct.
- Human Bubonic plague - Yersinia pestis (D): Bubonic plague is a classic zoonotic disease transmitted by rodent fleas, caused by the bacterium Yersinia pestis. This pair is correct.
Therefore, the only incorrect pairing is Fowl cholera with Vibrio cholerae.
Step 3: Final Answer:
The incorrect pair is Fowl cholera- Vibrio cholerae, corresponding to option (A).
Correctly associating infectious diseases with their specific etiological agents is a fundamental requirement in veterinary microbiology and epidemiology.
Step 2: Detailed Explanation:
Let us analyze each pair of disease and etiological agent:
- Fowl cholera - Vibrio cholerae (A): This pair is incorrect. Fowl cholera is a severe contagious disease of poultry caused by the bacterium Pasteurella multocida (a Gram-negative coccobacillus). Vibrio cholerae is the causative agent of human cholera, which is a completely different water-borne diarrheal disease. Thus, this pair is incorrect.
- Duck plague - Alphaherpesvirus 1 (B): Duck plague, also known as duck viral enteritis, is indeed caused by Anatid alphaherpesvirus 1 (a member of the family Herpesviridae). This pair is correct.
- Fowl plague - highly pathogenic avian influenza viruses (HPAIV) (C): Historically, "fowl plague" was the term used to describe devastating outbreaks of systemic disease in poultry, which was later determined to be caused by highly pathogenic avian influenza (HPAI) strains. This pair is correct.
- Human Bubonic plague - Yersinia pestis (D): Bubonic plague is a classic zoonotic disease transmitted by rodent fleas, caused by the bacterium Yersinia pestis. This pair is correct.
Therefore, the only incorrect pairing is Fowl cholera with Vibrio cholerae.
Step 3: Final Answer:
The incorrect pair is Fowl cholera- Vibrio cholerae, corresponding to option (A).
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