Surveillance of Multi-drug resistance of Salmonella Typhimurium strains. Twenty years review.

Today all over the world Salmonella typhimurium is one of the most frequent causes of food poisoning in humans. The antimicrobial resistance of salmonellas has increased rapidly during the last decade, creating a serious threat to the treatment of infectious diseases. This study will introduce the multi-drug resistance of 2931 Salmonella typhimurium strains isolated in patients diagnosed with salmonellosis or in carriers of salmonellas in the region of Elbasan, Albania during 1985-2004. All Salmonella typhimurium strains isolated during this period have been tested using impregnated discs with the most common used antimicrobial agents. S.typhimurium strains have shown resistance toward antibiotics as follows: Te+S, 64.04%, Te+C, 58.24%; S+C, 55.85%, Te+S+C, 53.46% while the multi-drug resistance shown is 87.17%. This multi-drug resistance of the strains isolated during 1985-2004 is comparable with the data represented by some native and international authors.