when studying acute and convalescent phase sera of patients with bacteraemic diseases , an unexpected rise of antibody activity ( measured as binding of radioactive antigen ) towards the capsular polysaccharide of neisseria meningitidis group a ( mena ) was observed in 59 out of 292 patients whose infection was caused by other organisms ( other groups of n. meningitidis , haemophilus influenzae , streptococcus pneumoniae , escherichia coli or staphylococcus aureus ) .
C0012634
diseases
C0009450
infection