Sajjad Ahmad, Shehzad Ahmed, Muhammad Shehryar Sabir, Haqnawaz Khan, Mubasher Rehman, Zeeshan Niaz.
Frequency and comparison among antibiotic resistant Staphylococcus aureus strains in selected hospitals of Peshawar, Pakistan..
J Pak Med Assoc Jan ;70(7):1199-202.

To assess and compare the frequency of antibiotic-resistant staphylococcus aureus strains. A retrospective study was conducted at the privately-owned Welfare Medical Laboratory, Peshawar, Pakistan, and comprised record related to the period between 07th February 2017 and 23rd March 2018 of patients referred for pus-testing from Khyber Teaching Hospital, Lady Reading Hospital and the Hayatabad Medical Complex. Pus samples were obtained from various parts of body with cotton swabs. The samples were cultured and the isolated staphylococcus aureus strains were analysed against selected antibiotics. The frequency of the isolated strains was tested and compared using Prism 7 software. Of the 6780 samples, staphylococcus aureus was found in 4315(63.64%). Wild-type staphylococcus aureus strains were 2133(31.46%), followed by 825(12.16%) methicillin resistant, 792(11.68%) vancomycin intermediate, and 565(8.33%) vancomycin-resistant staphylococcus aureus strains. The isolated strains were significant (p<0.0001) for operated wounds, and non-significant (p=0.8915) for diabetic foot cases. The frequency of antibiotic-resistant staphylococcu saureus strains was high.

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