Microbiology Which of the following is true about the antigen titre in Widal test? A O-antigen titre remains positive for several months & reaction to it is rapid. B H-antigen titre remains positive for several months & reaction to it is rapid C Both remain positive for several months & reaction to both is rapid D None 💡 Explanation Which of the following is true about the antigen titre in Widal test? ✓ Correct Answer: B. H-antigen titre remains positive for several months & reaction to it is rapid