Table 2.
Rate of rotavirus A (RVA) detection by age group and rate of detection of distinct RVA genotypes in the ore- and post-vaccination periods in Brazil, 1996–2017
| 1996 to 2005 (pre-vaccination period) | 2006 to 2017 (post-vaccination period) | p-value (chi-square test) | |
|---|---|---|---|
| Age group | |||
| 1–3 months | 108/587 (18.4%) | 91/729 (12.5%) | 0.003 |
| 4–11 months | 668/2006 (33.3%) | 415/2547 (16.3%) | < 0.001 |
| 12–24 months | 607/2154 (28.2%) | 680/3068 (22.2%) | < 0.001 |
| 25–48 months | 215/1235 (17.4%) | 505/1782 (28.3%) | < 0.001 |
| 49–144 months | 164/1048 (15.6%) | 332/1556 (21.3%) | < 0.001 |
| Total | 1762/7030 (25.1%) | 1903/9155 (20.8%) | < 0.001 |
| RVAa genotypes | |||
| G1P [8] / G1P[NTb] | 417/855 (48.8%) | 118/1835 (6.4%) | < 0.001 |
| G2P [4] / G2P[NT] | 47/855 (5.5%) | 838/1835 (45.7%) | < 0.001 |
| G3P [8] / G3P[NT] | 55/855 (6.4%) | 253/1835 (13.8%) | < 0.001 |
| G9P [8] / G9P[NT] | 238/855 (27.8%) | 152/1835 (8.3%) | < 0.001 |
| G12P [8] / G12P[NT] | – | 249/1835 (13.6%) | < 0.001 |
aRotavirus A; bNot typed