Volume 15, Number 1—January 2009
Dispatch
Rotavirus Genotype Distribution after Vaccine Introduction, Rio de Janeiro, Brazil
Filipe Anibal Carvalho-Costa, Irene Trigueiros Araújo, Rosane Maria Santos de Assis, Alexandre Madi Fialho, Carolina Maria Miranda de Assis Martins, Márcio Neves Bóia, and José Paulo Gagliardi Leite
Table
Frequency of rotavirus A infection and distribution of G and P genotypes from February 2005 through December 2007, Rio de Janeiro, Brazil*
| Vaccination status and year | No. samples | No. (%) rotavirus positive | No. (%) G1P[8] | No. (%) G2P[4] | No. (%) G3P[8] | No. (%) G9P[8] | No. (%) other genotypes, mixed or not typeable |
|---|---|---|---|---|---|---|---|
| Ineligible for full vaccination† | |||||||
| 2005 | 193 | 73 (38) | 10 (14) | 1 (1.4) | 22 (30) | 33 (45) | 7 (9.5) |
| 2006 | 148 | 34 (23) | 1 (2.9) | 14 (41) | 6 (8) | 5 (5) | 8 (23) |
| 2007 |
49 |
12 (24) |
1 (8) |
11 (92) |
– |
– |
– |
| Vaccinated‡ | |||||||
| 2006 | 6 | Negative§ | |||||
| 2007 |
33 |
4 (12) |
– |
4 (100) |
– |
– |
– |
| Not vaccinated | |||||||
| 2006 | 8 | Negative§ | |||||
| 2007 |
27 |
10 (37) |
– |
10 (100) |
– |
– |
– |
| Total | 464 | 133 (29) | 12 (9) | 40 (30) | 28 (21) | 38 (29) | 15 (11) |
*–, absence of genotypes.
†Born before January 1, 2006, or <4 months of age.
‡Children were considered vaccinated if they had received 2 doses of vaccine.
§All stool samples were negative for rotavirus.
