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To assess bacteriological safety of mussels Perna perna, harvested in Itaipu, Niterói, RJ and purchased at São Pedro fishmarket at the same city, fecal coliform counts and detection of Escherichia coli, Salmonella spp. and Vibrio spp. was performed in 27 mussel and 9 seawater samples collected between March 2012 and April of 2013. The pathogens isolated were submitted to antimicrobial susceptibility test. The majority (74%) of the mussel samples were unfit for human consumption and 89% of the seawater samples had unsatisfactorily high levels of contamination according to Brazilian laws. From the 77 E. coli and 51 Vibrio spp. isolated, 13% and 68.6% showed multiresistance and 15.6% and 72.5% showed multidrug resistant, respectively. The only Salmonella strain isolated was susceptible to all antimicrobial tested. Serotypes of Salmonella spp. and V. cholerae were not detected from the enrichment broths. Water pollution and food manipulation, throughout the food production chain, were factors which influenced the contamination of mussels.Practical Applications
This is the first report studying microbial quality of mussels along their process before arriving at the market; including characteristics of virulence genes and antimicrobial resistance of pathogens. Our study demonstrated that after collection, the manipulation realized by mussel's pickers is an important source of contamination, warning to the necessity of a better monitoring in the commercialization of this seafood.
Abstract The single radial immunodiffusion assay has been the accepted method for determining the potency of inactivated influenza vaccines since 1978. The world‐wide adoption of this assay for vaccine standardisation was facilitated through collaborative studies that demonstrated a high ... more
Abstract Background Whether morbidity from the 1918‐19 influenza pandemic discriminated by socioeconomic status has remained a subject of debate for 100 years. In lack of data to study this issue recent literature have hypothesized that morbidity was “socially neutral”. Objectives ... more
Smart skin that can respond to external stimuli could have important applications in medicine and robotics. Using only items found in a typical household, researchers have created multi-sensor artificial skin that's capable of sensing pressure, temperature, humidity, proximity, pH, and air ... more
Some doctors may recommend that patients with the flu take acetaminophen, or paracetemol, to relieve their symptoms; however, a new randomized clinical trial found no benefits to the over-the-counter medication in terms of fighting the influenza virus or reducing patients' temperature or ot ... more
A new study that investigated the potential of certain psychological traits for predisposing heterosexuals to have negative attitudes towards homosexual people found that psychoticism - which is present in severe psychopathological conditions but may also contribute to less severe states of ... more