Epidmological Study And Zoonotic Importance Of Bovine Salmonellosis In Selected Sites Of Addie Ababa Ethiopia

A cross-sectional study was carried out Cor the period of 6 months in selected sites of AddisrnAbaba in order to determine the prevalence and distribution of Samonella in the cattle chainrnfrolll abattoir to the COllsumer. The sources analyzed were pooled cattle faeces, pooledrnmesenteric Iymphnodes. single muscles from the diaphragm as well as from the abdominalrnregion Additional minced beef from supermarkets destined for human consumption andrnadditinally stool samples from the abattoir personnel were included ill the survey. The isolatedrnSalmollella strains were serotyped and resistance against antibiotics delclIllinedrnFor the culture method, the technique recommended by the International Organization forrnStandardization ( ISO 6579. 1998) was choscn Antimicrobial results ere analyzed based onrnthe descrption by AVID (1987). All the data collected on the prevalence and Salmonellarndistribution from the samples were presellled ill form of tables and figures The Chi• Squarerntest analyzed statistically whether there was association between Salmollella plcvalence withrnanimal condition or Illode of transport conditions, supcrmarkets or storage conditions inrnsupermarkets.rnAnalyzing prevalence and di stribution of Salmullella from 235 abattoir cattle randomlyrnselectcd samples leads to the following results: in 47 pooled samples of faeces (containingrnfive samples) 5 Salmullella strai ns (10.6 00) were isolated. in 47 pooled samples of mesentericrnIymphnodes there were 9 strains (196 00). 111 235 single samples of the abdominal (obliquernand transverse musclc) 23 (9.8 %) and in 235 diaphragmatic muscles 28 Salmonel/a ,erernfound (1 9 ~o) From 300 stool samples of the abattoir pcrsunncl ill 18 cases (6.0 %)rnSt.,lmomdlll were isolated. tvlinced beef frolll the 22 supenllarkets .,,•ilb an uverall of 330rnsamples cOlllained in 26 of the units (7 9 °0) .''l'tdll1cJllcl/a casesrnIn the entire study. 98 survivi ng Salmullel/a strains were serotypcd and identified as 27rnS. Anatulll. 53 S. Dublin. 5 S. leleagridis, I S. ~Iuenchen. 9 S. Sailllpaul alld 3 S roughrnforlll. From the pooled samples of faeces 4 S. Dublin and 1 S•. Muencl1en. of the pooledrnsamples of IIlcscnteric IYlllphnodes 3 S. AIlt1tUIll and 2 S. Dublin IwYe been found. In singlernsalllpies of abdominal muscles 18 S. Dublin and 3 ') .. Analum and in diaphragmatic musclernsamples 21 S. Dublin and 2 S. Anatull1 occurred. The cattle specific S. Dublin .vas tbe lIlostrndominant serovar in all the cattle st1l1lples The 18 Salmol/ella isolates from the abattoirrnpelsollllcl consisted of 7 S. Aanlulll. 4 5/. Dublin, 5 S. Mcleagridis and 2 Salmollel/a roughrn11rnforms, In this case S. Anal lim was the most predominant scrovar followed by S. Al eleagridisrnv.hich as never isolated from the callie chain From mi nced beef 26 ~)"alll1()IIC!l/o strains wererncultivated comprising 12 S. Anatulll. 4 S. Dublin, 9 S. Saintp3u l and 1 S. rough formrn3 Sallllollel/a scrotypcs, (2 S. Anatulll. I S. Dublin and 6 S. Saintpaul) originated from Kal itirnabattoir In this of Kara abattoir all 3 strains belonged to S. Saintpaul In minced meatrnoriginating from Addis Ababa lOS. Anatulll, 3 S. Dub lin and I S. rough form but nornS. Saintpaul were found In all the samples of Addis Ababa aballoir (faeces, mesentericrnIymphllodes. beef cuts and minced Ineat) no S. Saintpaul as detected neither.rnThe 98 Salmullel/a isolates v.ere tested for resistance against the seventeen antibiotics Thisrnresult is an inuication of rare ly using antimicrobial agents in Ethiopian call ie. hence no drug

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