Table 2. Prevalence of ESBL-producing organisms by overall, intra-abdominal infection and urinary-tract infection, categorized by type of infection (community-acquired and nosocomial), from SMART study in Mexico between 2009 and 2015.
| Overall | IAI | UTI | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Total | CA a) | N b) | Total | CA a) | N b) | Total | CA a) | N b) | ||||||||||
| ESBL-producing organism | N | % | N | % | n | % | n | % | n | % | n | % | n | % | n | % | n | % |
| Escherichia coli | 1225* | 54% | 525 | 23% | 675 | 30% | 818* | 56% | 370 | 25% | 437 | 30% | 397* | 50% | 155 | 20% | 238 | 30% |
| Klebsiella pneumoniae | 186* | 39% | 84 | 18% | 97 | 20% | 124* | 40% | 47 | 15% | 76 | 25% | 59* | 35% | 37 | 22% | 21 | 13% |
| Klebsiella oxytoca | 14 | 20% | 8 | 11% | 6 | 9% | 11 | 20% | 6 | 11% | 5 | 9% | 3 | 19% | 2 | 13% | 1 | 6% |
| Proteus mirabilis | 2 | 2% | 1 | 1% | 1 | 1% | 0 | 0% | 0 | 0% | 0 | 0% | 2 | 5% | 1 | 2% | 1 | 2% |
The prevalence of ESBL-producing organisms were calculated for the total of each organism in the overall intra-abdominal infection (IAI) and urinary-tract infection (UTI), as presented in Table 1;
a) Community-acquired (CA) was defined as an isolate obtained <48h after hospitalization;
b) Nosocomial (N) was defined as an isolate obtained >48h after hospitalization;
*For some isolates herein included the type of infection and the type of source were not specified.