| serum bactericidal activity in a secondary school population following an outbreak of meningococcal disease: effects of carriage and secretor status. | sera obtained from 106 children following an outbreak of neisseria meningitidis (b:4:p1.15) were screened for bactericidal antibodies against isolates of meningococci and neisseria lactamica. most had high titres of antibodies to n. lactamica and n. meningitidis ng:4:- but not to capsulate isolates: b:4:p1.15; b:15:p1.16; b:4:-; c:4:-. bactericidal activity was higher for both carriers and secretors but the differences were not significant. bactericidal activity was not associated with total or ... | 1996 | 8809542 |