Table 2 The circulation of toxigenic C. diphtheriae in Belarus (1996–2005)
Year | C. diphtheriae | Total strains | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
gravis | mitis | belfanti | ||||||||||
total strains | tox + | total strains | tox + | total strains | tox + | no. | tox + | |||||
no. | % | no. | % | no. | % | no. | % | |||||
1996 | 316 | 208 | 65.8 | 168 | 21 | 12.5 | 2 | 0 | 0 | 486 | 229 | 47.1 |
1997 | 231 | 137 | 59.3 | 170 | 12 | 7.0 | 9 | 0 | 0 | 410 | 149 | 36.3 |
1998 | 209 | 71 | 34.0 | 129 | 0 | 0 | 24 | 0 | 0 | 362 | 71 | 19.6 |
1999 | 220 | 99 | 45.0 | 115 | 5 | 4.3 | 4 | 0 | 0 | 339 | 104 | 30.7 |
2000 | 241 | 115 | 47.7 | 152 | 5 | 3.3 | 10 | 0 | 0 | 403 | 120 | 29.8 |
1996–2000 | 1217 | 630 | 51.8 | 734 | 43 | 5.9 | 49 | 0 | 0 | 2000 | 673 | 33.7 |
2001 | 187 | 54 | 28.9 | 192 | 1 | 0.5 | 29 | 0 | 0 | 408 | 55 | 13.5 |
2002 | 130 | 25 | 19.2 | 160 | 0 | 0 | 20 | 0 | 0 | 310 | 25 | 8.1 |
2003 | 66 | 12 | 18.2 | 131 | 4 | 3.1 | 16 | 0 | 0 | 213 | 16 | 7.5 |
2004 | 100 | 40 | 40.0 | 169 | 16 | 9.5 | 21 | 0 | 0 | 290 | 56 | 19.3 |
2005 | 114 | 20 | 17.5 | 171 | 0 | 0 | 7 | 0 | 0 | 292 | 20 | 6.8 |
2001–2005 | 597 | 148 | 24.8 | 823 | 21 | 2.6 | 93 | 0 | 0 | 1513 | 169 | 11.2 |