Shiga toxin-producing Escherichia coli strains are human pathogens linked to hemorrhagic colitis and hemolytic uremic syndrome. The major virulence factors of these strains are Shiga toxins Stx1 and Stx2. The majority of the genes coding for these toxins are borne by bacteriophages. Free Stx2-encoding bacteriophages have been found in aquatic environments, but there is limited information about...

"Blockade" of the RES by thorotrast so lowered the tolerance of hemorrhagic shock in rabbits and dogs that a reversible degree of hemorrhagic shock became irreversible. This was true not only in normal rabbits, but in rabbits made resistant to hemorrhagic shock by producing resistance to endotoxins. Rabbits which had been pretreated with thorotrast and then subjected to hemorrhagic shock displa...

Throughout Otsego Lake's watershed, most residents rely on septic tanks as a source of wastewater disposal. Along the northwest shore of the lake, there are many houses situated closely together. Ground water degradation has occurred in many areas having high densities of septic tanks systems, with the degradation exemplified by high concentrations of nitrates, bacteria and other contaminants (...

This study aimed to evaluate the presence of coliforms in 50 samples (25 ready-to-eat vegetable salads and 25 handlers’ hands) collected randomly from restaurants Baghdad. The total coliform count Al-Sadria Hay al-Amel reached 4.78 4.32 log cfu/g, respectively, whereas those swab hands same areas 3.70 3.90 respectively. percentages fecal bacteria salad were 35% 32%, hand swabs 41% 36%, Two isol...

Predicting the presence of enteric viruses in surface waters is a complex modeling problem. Multiple water quality parameters that indicate the presence of human fecal material, the load of fecal material, and the amount of time fecal material has been in the environment are needed. This paper presents the results of a multiyear study of raw-water quality at the inlet of a potable-water plant t...