BACKGROUND AND OBJECTIVES Shiga toxin-producing Escherichia coli (STEC) have emerged as human pathogens and contamination via animal origin has been a major public health concern. We compared the distribution of phylogenetic groups and prevalence of stx gene variants among the pathogenic strains of Escherichia coli isolated from feces of diarrheatic calves in Tehran suburb farms. MATERIALS AN...

background and objectives: shiga toxin-producing escherichia coli (stec) have emerged as human pathogens and con- tamination via animal origin has been a major public health concern. we compared the distribution of phylogenetic groups and prevalence of stx gene variants among the pathogenic strains of escherichia coli isolated from feces of diarrheatic calves in tehran suburb farms. materials a...

fifty-nine samples of washed and unwashed leaves of 4 species of plants in tehran and 24 similar samples of the suburb (as control) were analyzed for pb content. a significant difference was seen between pb contents of washed and unwashed urban samples, while no significant difference was observed between the control samples. the mean pb contents of the urban suburb samples were also significan...

In order to evaluate tilmicosin efficacy in dairy cows to reduce the rate of intra mammary infections in dry period and new infections in post partum period, sixty quarters of 30 Holstein cows in the dairy farms of Fashapoye in Tehran suburb infected by gram positive bacteria were divided equally in two , test and control groups .Bacterial examination and somatic cell count were examined at the...

This commentary constructs a social history of Hillbrow, an inner-city suburb in Johannesburg, South Africa, based on a review of relevant published historical, anthropological and sociological texts. We highlight the significant continuities in the social structure of the suburb, despite the radical transformations that have occurred over the last 120 years.Originally envisaged as a healthy re...

leptospirosis is one of the main causes of acute febrile illness and is presumed to be the most widespread zoonotic disease in the world. cattle populations may be infected with serovars hardjo, pomona and grippotyphosa. infection with icterohaemorrhagiae, bratislava, hebdomadis, autumnalis, australis, sejroe, canicola and bataviae serovars also occurs. in this study, 200 serum samples were col...