Isolation and Molecular Detection of Salmonella Infantis from Milk and Children with Gastroenteritis in Babylon Province, Iraq
DOI:
https://doi.org/10.37506/ijfmt.v14i4.11764Keywords:
Salmonella infantis, invA gene, invF gene, gastroenteritis, Milk, Gastroenteritis, Antibiotic Resistance.Abstract
Two hundred and ten samples were included in this study. The samples encompassing of 90 cattle milk
samples obtained from local markets, and 120 stool samples obtained from children with gastroenteritis
of age less than 12 years from both genders who were attending to the Babylon maternity and children’s
hospital. The samples were collected during the interval from February to August 2018 in Babylon province.
All these 210 samples were subjected to many tests for isolation and identification of Salmonella species by
using bacterial culturing, biochemical tests, and API20E test system. The results showed that the prevalence
of identifying Salmonella isolates were 69 (32.9%) out of 210 samples, distributed as (25/90) (27.8%) market
milk and (44/120) (36.7%) stool samples. The identified Salmonella isolates were subjected to serotyping by
monovalent antisera. It was found that 4 out of 25 isolates (16%) in market milk samples and 16 out of 44
isolates (36.4%) in stool samples that belong to Salmonella infantis. PCR technique was achieved to identify
invA and invF virulence genes in Salmonella infantis strains. All 20 isolates of Salmonella infantis in market
milk and stool samples were examined. The results revealed that, invA gene was detected in all strains of
Salmonella infantis isolated from the market milk and stool samples, while the invF gene was present in
2 strains of the market milk Salmonella infantis, but existing in all strains of the stool Salmonella infantis.
Downloads
Published
Issue
Section
License
https://creativecommons.org/licenses/by-nc/2.0/deed.en