Bacteriological study of Neisseria strains isolated in Romania 1971-1992.

1496 Neisseria strains isolated from patients and carriers from 24 counties in Romania and Bucharest in 1971-1992 were studied. Serogroup A identified in 84.5% in 1987 shows a remarkable decrease in pre- and post-epidemic periods when serogroups B and C reach rates varying from 0 to 66.

Characteristics of Neisseria meningitidis strains isolated in Romania between 1986 and 1989.

499 N. meningitidis strains were studied, 454 being isolated from CSF and blood and 45 from nasopharynx. Meningococcal serogroup A was prevalent in 1986-1988, having a decreasing tendency from 84.

A latex agglutination test for meningococcal infection diagnosis.

Immunodiagnosis is very useful especially in cases where bacteriological diagnosis cannot be made because of the high sensitivity of Neisseria meningitidis. A sensitive reaction is described for the detection of antimeningococcal antibodies using as antigen a latex suspension specifically sensitized with saline extracts from N. meningitidis groups A, B and C.