Microbiology A person working in an abattoir presented with malignant pustule on hand; What is the causative agent? A Clostridium botulinum B ostridium perfringens C Bacillus anthracis D Streptococcus pyogenes 💡 Explanation A person working in an abattoir presented with malignant pustule on hand; What is the causative agent? ✓ Correct Answer: C. Bacillus anthracis