Characterization of MID-dependent hemagglutination in 42 M. catarrhalis strains

M. catarrhalis phenotypeaNo. of isolates with the following hemagglutination scoreb:
High MID intensity00021
Low MID intensity17211
  • a M. catarrhalis strains with high or low MID expression were included.

  • b Human erythrocytes were incubated with M. catarrhalis in microtiter plates. Hemagglutination was graded from negative (−) to strongly positive (+++).