Microbiology Bacteria a560d271 Swarming is seen in: A Clostridium perfringens B Clostridium tetani C Clostridium botulinum D Clostridium difficile High-Yield Explanation Ans. B. Clostridium tetaniSwarming/ spreading type of growth is seen in many bacteria i.e. Proteus, Clostridium tetani, Vibrio parahemolyticus etc.