Microbiology General 959c5788 Von magnus phenomenon is A High hemagglutinin titre, low infectivity B High hemagglutinin titre, high infectivity C Low hemagglutinin titre, low infectivity D Low hemagglutinin titre, High infectivity High-Yield Explanation Commonly hemagglutinin titre α Infectivity but in Von-Magnus phenomenon - High hemagglutinin titre, Low infectivity due to mutation in virulent gone.