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Annual distribution of genome type
| Genome type | No. of strains isolated by year
|
Total no. of strains | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1990 | 1991 | 1992 | 1993 | 1994 | 1995 | 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | ||
| D1 | 4 | 4 | 1 | 9 | |||||||||
| D3 | 2 | 1 | 3 | ||||||||||
| D6 | 1 | 3 | 7 | 4 | 1 | 2 | 18 | ||||||
| D7 | 2 | 2 | |||||||||||
| D8 | 3 | 6 | 2 | 11 | |||||||||
| D9 | 1 | 1 | |||||||||||
| D10 | 2 | 2 | 4 | ||||||||||
| D11 | 3 | 3 | |||||||||||
