Table 2. Year wise distribution of antimicrobial resistant S. Typhi and S. Paratyphi A Kolkata isolates, 2009 to 2013.
| Antimicrobial resistance Groups | S. Typhi | S. Paratyphi A | ||||||
| 2009–2011 (n = 22) | 2012 (n = 27) | 2013 (n = 28) | Total (n = 77) | 2009–2011 (n = 7) | 2012 (n = 9) | 2013 (n = 9) | Total (n = 25) | |
| MDR a | 3(13.6) | 4(14.8) | 7(25) | 14(18.2) | 0 | 0 | 0 | 0 |
| NaR b | 22(100) | 26(96.3) | 28(100) | 76(98.7) | 6(85.7) | 9(100) | 9(100) | 24(96) |
| DCS c | 16(72.7) | 22(81.5) | 23(82.1) | 61(79.2) | 5(71.4) | 7(77.8) | 7(77.8) | 19(76) |
| CiR d | 6(27.3) | 4(14.8) | 5(17.9) | 15(19.5) | 1(14.3) | 2(22.2) | 2(22.2) | 5(20) |
a
MDR, multidrug resistant (resistance to ampicillin, chloramphenicol, co-trimoxazole with or without tetracycline).
b
NaR, nalidixic acid resistant.
c
DCS, decreased susceptibility to ciprofloxacin.
d
CiR, ciprofloxacin resistant.
All data are in no. (%).