Microbiology A major step in the pathogenesis of listeriosis is – A The formation of antigen-antibody complexes with resultant complement activation and tissue damage B The release of hyaluronidase by L. monocytogenes, which contributes to its dissemination from local sites C The antiphagocytic activity of the L. monocytogenes capsule D The survival and multiplication of L'. monocytogenes within mononuclear phagocytes and host epithelial cells 💡 Explanation A major step in the pathogenesis of listeriosis is - ✓ Correct Answer: D. The survival and multiplication of L'. monocytogenes within mononuclear phagocytes and host epithelial cells