摘要：In 1995 the National Neisseria Network examined 250 strains of Neisseria meningitidis isolated frominvasive cases of meningococcal disease throughout Australia. The majority of isolates were eitherserogroup B (166, 66%) or serogroup C (69, 28%). There were only two serogroup A isolates. Theproportion of isolates of serogroup B meningococci increased in 1995 from 54% in 1994. Most casesof invasive disease occurred in those less than four years of age (43%), with another peak in the15 - 24 years age group (26%). Outcome data were available in 190 instances and there were 13deaths recorded (7%). Penicillin susceptibility of isolates was little changed and minimal inhibitoryconcentrations (MICs) ranged between 0.002 and 0.5 mg/L. One hundred and fifty-five isolateswere in the 'less susceptible' range (MIC 0.06 - 0.5 mg/L).
