Volume 7, Number 3—June 2001
Research
Molecular Epidemiology of Serogroup A Meningitis in Moscow, 1969 to 1997
Mark Achtman*
, Arie van der Ende†, Peixuan Zhu*, Irina S. Koroleva‡, Barica Kusecek*, Giovanna Morelli*, Ilse G.A. Schuurman†, Norbert Brieske*, Kerstin Zurth*, Natalya N. Kostyukova§, and Alexander E. Platonov‡
, Arie van der Ende†, Peixuan Zhu*, Irina S. Koroleva‡, Barica Kusecek*, Giovanna Morelli*, Ilse G.A. Schuurman†, Norbert Brieske*, Kerstin Zurth*, Natalya N. Kostyukova§, and Alexander E. Platonov‡
Table 3
Years of isolation of individual subgroups of serogroup A Neissseria meningitidis in Moscow
| Number of strains |
||||||
|---|---|---|---|---|---|---|
| Year | III (ST5a) | X | VI | III (ST7) | other | Total |
| 1969 | 1 | 1 | ||||
| 1970 | 9 | 1 | 10 | |||
| 1971 | 4 | 1 | 5 | |||
| 1973 | 1 | 1 | ||||
| 1977 | 2 | 2 | ||||
| 1983 | 4 | 4 | ||||
| 1984 | 14 | 3 | 17 | |||
| 1985 | 3 | 3 | 6 | |||
| 1986 | 3 | 3 | ||||
| 1987 | 3 | 3 | ||||
| 1988 | 8 | 8 | ||||
| 1991 | 8 | 8 | ||||
| 1993 | 2 | 2 | ||||
| 1994 | 1 | 4 | 1 | 6 | ||
| 1995 | 4 | 1 | 1 | 6 | ||
| 1996 | 1 | 17 | 18 | |||
| 199 |
1 |
2 |
3 |
|||
| Total | 17 | 23 | 40 | 21 | 2 | 103 |
aST = sequence type
Subgroup assignments are according to data from random amplification of polymorphic DNA (Figure 2). For strains of subgroup III where a complete multilocus sequence typing analysis was not performed, bacteria were assigned to ST5 and ST7 on the basis of results with pgm polymerase chain reaction/restriction analysis. Other: 1971, subgroup IV-2; 1995, ST79.
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