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Biochemical and Cellular Archives ; 22(1):2123-2131, 2022.
Article in English | EMBASE | ID: covidwho-1980344


This study was conducted in the College of Medicine, Wasit University Cooperation with the Al Zahraa Teaching Hospital, Al Kut Hospital laboratory in Wasit, Al-Karama hospital and private clinics of internal from the period of November 2020 to April 2021. It has been carried out on 150 samples of nasal and throat swabs from post COVID-19 patients who suffered from nasal and throat infection from both sex (male &female). The infections were in age group between (4-88) years. The results of throat swabs showed that 84(56%) were infected with bacteria and 66(44%) non-infected and the results of nasal swabs showed that 67(44.66%) were infected with bacteria and 83(55.33%) non-infected. The results of culture appeared that from 150 throat swab sample found that 66(44%) samples were no growth and 84(56%) were infected with bacteria. The results were Pseudomonas aeruginosa 12/150(8%), E. coli 9/150(6%), Enterobacter spp. 2/150(1.33), Pseudomonas spp. 2/ 150(1.33%), Klebsiella spp. 2/150(1.33%), Staphylococcus spp. 4/150(2.66%), Staphylococcus aureus 4/150(2.66%), Streptococcus viridans 43/150(28.66%) and mix of Staphylococcus spp. and Streptococcus viridans 6/150(4%). Out of 150 nasal swab sample found that 83/150(55.33%) sample were no growth and 67/150(44.67%) were infected with bacteria. The result were Pseudomonas aeruginosa 7/150(4.66%), E.coli 3/150(2%), Enterobacter spp. 2/150(1.33), Pseudomonas spp. 5/ 150(3.33%), Klebsiella spp. 6/150(4%), Staphylococcus spp. 12/150(8%), Staphylococcus aureus 3/150(2%), Streptococcus viridans 24/150(16%) and mix of Staphylococcus spp. and Streptococcus viridans 3/150(5.33%) and mix of E. coli and Pseudomonas spp. 2/150(1.33%). Antimicrobial sensitivity for Pseudomonas aeruginosa showed sensitivity to Amikacin (100%), levofloxacin (90%), Meropenem (90%), Cefipime (70%), Imipenem (60%), Aztreonam (30%), Chloramphenicol (5%), and don’t show sensitive to Tetracycline, Pipracillin, Ampicillin, Trimethoprim-Sulphamethoxazole and Clarithromycin. To facilitate species identification, used molecular methods (PCR analysis) by 16s rRNA primers gene for more predominant bacteria isolates (Pseudomonas aeruginosa) isolates studied were detected by 16S rRNA gene and there virulence factors based on multiplex polymerase chain reaction technique amplifying five virulence factors primer for Pseudomonas aeruginosa (aprA, filC, toxA, pilA, pslA). In this study, we concluded that the production of virulence factors genes in Pseudomonas aeruginosa is important to human infection especially (ToxA) gene and the PCR technique was very specific and fast method in detection virulence factor genes in Pseudomonas aeruginosa.