{'fraction_non_alphanumeric': 0.02702702702702703, 'fraction_numerical': 0.007722007722007722, 'mean_word_length': 5.02906976744186, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Detection of PEr 1 extended-spectrum β-lactamase among nosocomial providencia stuartii isolates in Tunisia.

BACKGROUND
The Emergence of extended-spectrum beta-lactamases (ESBLs) in Enterobacteriace species imparting resistance to thirdgeneration cephalosporins is a growing concern worldwide. aims: This study was undertaken to characterize ESBL producers from clinical isolates of Providencia stuartii in Tunisia. methods: We analysed ten non-duplicate ESBL positive, P. stuartii isolates collected in intensive care units of military Hospital in Tunisia from blood specimens and presented an extended-spectrum resistance phenotype . the presence of the blaPER-1 encoding genes was confirmed by polymerase chain reaction. results:We detected PER-1 in three of ten isolates of P. stuartii. The gene coding for this enzyme was located on a 100 kb conjugative plasmid that encoded a β-lactamase with a pI of 5.3.


CONCLUSION
This study suggests the spreading of this gene among P. stuartii. clinical strains in the next year in Tunisia.