Genomic analysis of a multidrug-resistant Klebsiella pneumoniae ST11 strain recovered from Barbary deer (Cervus elaphus barbarus) in Akfadou Forest, Algeria

International audienc

In vitro susceptibility of nonfermenting Gram-negative rods tomeropenem–vaborbactam and delafloxacin Suppl. Table 1

Aim: Meropenem–vaborbactam and delafloxacin activities were not assessed against Achromobacter spp. (Achr), Burkholderia cepacia complex (Bcc) and Stenotrophomonas maltophilia (Smal). Methodology: A total of 106 Achr, 57 Bcc and 100 Smal were tested with gradient diffusion test of meropenem–vaborbactam, delafloxacin and comparators. Results: Meropenem–vaborbactam MIC50 were 4 μg/ml for Achr, 1 μg/ml for B. cepacia, 2 μg/ml for B. cenocepacia and B. multivorans, and 32 μg/ml for Smal. Delafloxacin MIC50 were 4 μg/ml for Achr, 0.25 μg/ml for B. cepacia and B. multivorans, 2 μg/ml for B. cenocepacia, and 0.5 μg/m for Smal. meropenem–vaborbactam MICs were fourfold lower than meropenem for 28.3% Achr, 77.2% B. cepacia, 53.8% B. cenocepacia and 77.2% B. multivorans. Conclusion: Meropenem–vaborbactam and delafloxacin are in vitro active against Bcc and Achr.</p

In vitro susceptibility of nonfermenting Gram-negative rods tomeropenem–vaborbactam and delafloxacin Suppl. Table 2

Aim: Meropenem–vaborbactam and delafloxacin activities were not assessed against Achromobacter spp. (Achr), Burkholderia cepacia complex (Bcc) and Stenotrophomonas maltophilia (Smal). Methodology: A total of 106 Achr, 57 Bcc and 100 Smal were tested with gradient diffusion test of meropenem–vaborbactam, delafloxacin and comparators. Results: Meropenem–vaborbactam MIC50 were 4 μg/ml for Achr, 1 μg/ml for B. cepacia, 2 μg/ml for B. cenocepacia and B. multivorans, and 32 μg/ml for Smal. Delafloxacin MIC50 were 4 μg/ml for Achr, 0.25 μg/ml for B. cepacia and B. multivorans, 2 μg/ml for B. cenocepacia, and 0.5 μg/m for Smal. meropenem–vaborbactam MICs were fourfold lower than meropenem for 28.3% Achr, 77.2% B. cepacia, 53.8% B. cenocepacia and 77.2% B. multivorans. Conclusion: Meropenem–vaborbactam and delafloxacin are in vitro active against Bcc and Achr.</p

French national epidemiology of bacterial superinfections in ventilator-associated pneumonia in patients infected with COVID-19: the COVAP study

International audienceAbstract Background Description and comparison of bacterial characteristics of ventilator-associated pneumonia (VAP) between critically ill intensive care unit (ICU) patients with COVID-19-positive, COVID + ; and non-COVID-19, COVID-. Methods Retrospective, observational, multicenter study that focused on French patients during the first wave of the pandemic (March–April 2020). Results 935 patients with identification of at least one bacteriologically proven VAP were included (including 802 COVID +). Among Gram-positive bacteria, S. aureus accounted for more than two-thirds of the bacteria involved, followed by Streptococcaceae and enterococci without difference between clinical groups regarding antibiotic resistance. Among Gram-negative bacteria, Klebsiella spp. was the most frequently observed bacterial genus in both groups, with K. oxytoca overrepresented in the COVID- group (14.3% vs . 5.3%; p &lt; 0.05). Cotrimoxazole-resistant bacteria were over-observed in the COVID + group (18.5% vs . 6.1%; p &lt;0.05), and after stratification for K. pneumoniae (39.6% vs . 0%; p &lt;0.05). In contrast, overrepresentation of aminoglycoside-resistant strains was observed in the COVID- group (20% vs . 13.9%; p &lt; 0.01). Pseudomonas sp. was more frequently isolated from COVID + VAPs (23.9% vs . 16.7%; p &lt;0.01) but in COVID- showed more carbapenem resistance (11.1% vs . 0.8%; p &lt;0.05) and greater resistance to at least two aminoglycosides (11.8% vs . 1.4%; p &lt; 0.05) and to quinolones (53.6% vs . 7.0%; p &lt;0.05). These patients were more frequently infected with multidrug-resistant bacteria than COVID + (40.1% vs . 13.8%; p &lt; 0.01). Conclusions The present study demonstrated that the bacterial epidemiology and antibiotic resistance of VAP in COVID + is different from that of COVID- patients. These features call for further study to tailor antibiotic therapies in VAP patients