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Table 1 The circulation of C. diphtheriae biotypes in Belarus (1996–2005)

From: Molecular epidemiology of C. diphtheriaestrains during different phases of the diphtheria epidemic in Belarus

Year Total strains C. diphtheriae biotype
   gravis mitis belfanti
   no. % no. % no. %
1996 486 316 65.0 168 34.6 2 0.4
1997 410 231 56.3 170 41.5 9 2.2
1998 362 209 57.7 129 35.7 24 6.6
1999 339 220 64.9 115 33.9 4 1.2
2000 403 241 59.8 152 37.7 10 2.5
1996–2000 2000 1217 60.8 734 36.7 49 2.5
2001 408 187 45.8 192 47.1 29 7.1
2002 310 130 41.9 160 51.6 20 6.5
2003 213 66 31.0 131 61.5 16 7.5
2004 290 100 34.5 169 58.3 21 7.2
2005 292 114 39.0 171 58.6 7 2.4
2001–2005 1513 597 39.5 823 54.4 93 6.1