Continuous WGS-based national surveillance of 3GC-R Ec , in combination with more detailed epidemiological information, can improve the ability to follow the population dynamics of 3GC-R Ec , thus allowing for the detection of potential outbreaks and the effects of changing treatment regimens in the future.
Compared to 2003 data the ESBL prevalence in Denmark has increased significantly. In the ESBL-producers, reduced susceptibility towards both gentamicin and ciprofloxacin was seen among 43% E. coli and 55% K. pneumoniae, leaving clinicians in these cases with only a carbapenem for the treatment of serious infections. Part of this study was presented at the 20(th) European Congress of Clinical Microbiology and Infectious Diseases, abstract P-1617.
According to the literature, Kingella kingae may be an underdiagnosed cause of joint and bone infections in children. The use of the Bactec blood culture system for culture of joint fluids has dramatically improved the isolation of this fastidious bacterium. The aim of this study was to test the recovery rate and detection time of four commercial blood culture systems: three different BacT/Alert (Organon Teknika, USA) bottles and one Bactec (Becton Dickinson Microbiology Systems, USA) bottle, all inoculated with Kingella kingae strains mixed with pooled synovial fluids. For each strain the same inoculum and volume of synovial fluid was distributed into each of the four bottles. All 24 strains tested grew in the BacT/Alert Aerobic (100%) and the BacT/Alert Pedi-BacT (100%) bottles. Twenty-one strains grew in the BacT/Alert FAN aerobic (88%) bottle, and 15 strains grew in the Bactec Plus Aerobic F (63%) bottle, in both systems within 12 days (P<0.01). The Kingella kingae strains were first detected in the BacT/Alert Pedi-BacT bottles (P<0.001). The results were reproducible. The BacT/Alert blood culture bottles were superior to previously described blood culture systems in isolating Kingella kingae from synovial fluid, even with small inoculums and small volumes of synovial fluid.
A clone of T type 28 seemed to be the cause of the largest cluster of PASI cases described thus far. Clarithromycin was effective as second line treatment. An estimated annual baseline incidence of 2 to 7 per 1000 in the local population indicates that PASI may not be as rare as previously estimated.
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