clinical symptoms of V.parahaemolyticus infection are watery diarrhea, nausea, and abdominal cramps. In the acute form of the disease, hemorrhagic gastroenteritis with bloody diarrhea occurs. A complication such as septicemia also may appear and sometimes lead to death. Although most V.parahaemolyticus infections are self-limiting and rehydration therapy is sufficient, in some cases the use of antibiotics is necessary. tetracyclines have been recommended as the antimicrobials of choice for treatment of severe Vibrio infections, but third-generation cephalosporins with doxycycline or fluoroquinilone alone are sometimes used. V.parahaemolyticus isolates from seafood and the environment are commonly resistant to ampicillin, and increasing resistance of these bacteria to aminoglycosides (streptomycin and gentamicin), tetracyclines, ciprofloxacin, and chloramphenicol has been observed worldwide. Although human clinical isolates have lower resistance to antibiotics than do the environmental strains, B-lactamresistant V.parahaemolyticus isolates also have been reported.
the aim of this study was to investigate the prevalence of V.parahaemolyticus in live bivalve molluscs available in Polish markets and to evaluate the antimicrobial resistance of these isolates.