Volume 8, Number 12—December 2002
Dispatch
Capsule Switching among C:2b:P1.2,5 Meningococcal Epidemic Strains after Mass Immunization Campaign, Spain
Belén Alcalá*, Luisa Arreaza*, Celia Salcedo*, María J. Uría*, Laura De La Fuente*, and Julio A. Vázquez*
Table 2
Frequency of the B:2b:P1.2,5 and C:2b:P1.2,5 meningococcal strains characterized by the laboratory, 1995–2000
| Year | No. of strains received by the laboratory | No. of C:2b:P1.2,5 (%) | No. of B:2b:P1.2,5 (%) |
|---|---|---|---|
| 1995 | 254 | 56 (22%) | 1 (0.4%) |
| 1996 | 380 | 176 (46.3%) | 1 (0.26%) |
| 1997 | 687 | 313 (45.5%) | 2 (0.3%) |
| 1998 | 554 | 149 (26.9%) | 2 (0.36%) |
| 1999 | 598 | 144 (24.1%) | 5 (0.84%) |
| 2000 | 502 | 97 (19.3%) | 4 (0.8%) |
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