|
Invasive Disease Reporting
The Iowa Antibiotic Resistance Surveillance Program is a statewide,
population-based study gathering information on the prevalence of
invasive organisms - isolated from selected, sterile body sites - that show increased resistance to multiple drugs
These organisms are:
- Methicillin resistant Staph aureus (MRSA)
- Streptococcus pneumoniae
- Enterococcus species, including Vancomycin Resistant Enterococcus (VRE)
-
Streptococcus pyogenes (Group A beta strep)
-
Staphylococcus aureus with increased susceptibility to Vancomycin (VISA/VRSA)-
These organisms are to be submitted regardless of site of infection
Eligible facilities (those labs performing susceptibility testing on
these organisms) submit these organisms to the University Hygienic
Laboratory along with their susceptibility results. Antimicrobial
susceptibility testing is then repeated using the gold standard of broth
microdilution to facilitate accurate evaluation of results. Only those
drugs tested by our reference laboratory are included in the data
displayed on this site.
Statewide Data
 |
|
| 1999 |
2000 |
2001 |
2002 |
2003 |
2004 |
2005 |
2006 |
2007 |
| 129 (24%) |
110 (28%) |
71 (27%) |
67 (22%) |
76 (25%) |
38 (15%) |
63 (25%) |
80 (28%) |
86 (22.5%) |
| 84 (16%) |
71 (81%) |
41 (16%) |
32 (10%) |
50 (16%) |
23 (9%) |
43 (17%) |
52 (18%) |
45 (12%) |
| 1 (0.2%) |
5 (1.3%) |
0 |
3 (1%) |
3 (1%) |
2 (1%) |
2 (1%) |
3 (1%) |
0 |
| 27 (15%) |
22 (14%) |
29 (18%) |
20 (13%) |
30 (16%) |
35 (16%) |
40 (14%) |
35 (10%) |
33 (9%) |
| 0 |
2 (3%) |
4 (7%) |
4 (10%) |
0 |
0 |
0 |
4 (10%) |
3 (5%) |
|
Disclaimer: The number of invasive infections caused by these
organisms is most likely higher than represented here. A recent
evaluation of this system revealed that only about 44% of the isolates
that should be submitted to the surveillance program were actually
submitted.
- MDR=Multi-Drug Resistant: Isolates of Streptococcus pneumoniae
resistant to Penicillin and one or more of the following drugs:
Erythromycin, Azithromycin, Clarithromycin, Clindamycin,
Chloramphenicol, Tetracycline, Trimethoprim/Sulfa
- Vancomycin Resistant Enterococcus
- Macrolide non-susceptible represents isolates with reduced
susceptibility to Clarithromycin. Azithromycin is no longer tested
against Group A Strep in this program.
- Methicillin Resistant Staphylococcus aureus
Note: no Staph aureus with reduced sensitivity to Vancomycin were identified through
2006 in Iowa
2007: 2 VISA isolates, one from urine and one from blood; one from region 1A and one from region 2A
|
