Question:

Match List I with List II
Choose the correct answer from the options given below:

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Mastitis Classifications:
Contagious = Staphylococcus aureus, Streptococcus agalactiae
Summer Mastitis = Arcanobacterium (Trueperella) pyogenes
Environmental = E. coli, Klebsiella
Fungal = Trichosporon, Candida.
  • A - III, B - II, C - I, D - IV
  • A - II, B - I, C - IV, D - III
  • A - I, B - II, C - III, D - IV
  • A - IV, B - I, C - II, D - III
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The Correct Option is A

Solution and Explanation


Step 1: Understanding the Concept:

Classification of bovine mastitis by epidemiological transmission dynamics and microbial etiology.

Step 2: Detailed Explanation:

Matching mastitis categories in List I with specific bacterial/fungal etiologies in List II:
- A. Contagious Mastitis: Spread cow-to-cow during milking $\rightarrow$ III. {Staphylococcus aureus (and Streptococcus agalactiae).
- B. Summer Mastitis: Transmitted by sheep flies (Hydrotaea irritans) in dry heifers/cows $\rightarrow$ II. {Arcanobacterium pyogenes (now Trueperella pyogenes with Peptoniphilus indolicus).
- C. Environmental Mastitis: Acquired from bedding, soil, feces between milkings $\rightarrow$ I. {Escherichia coli (and Klebsiella pneumoniae).
- D. Fungal Mastitis (Mycotic Mastitis): Caused by opportunistic yeasts/fungi $\rightarrow$ IV. {Trichosporon spp. (and Candida spp.).
Matching sequence: A - III, B - II, C - I, D - IV.

Step 3: Final Answer:

Therefore, the correct matching is A - III, B - II, C - I, D - IV, corresponding to option (A).
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