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Abstract

A monitoring program was carried out in bathing waters along the sea-coast of the Adriatic Sea. The investigation was aimed at obtaining a quali-quantitative picture of microorganisms of anthropic origin and of a more strictly autochthonous origin and at verifying the existence of possible reciprocal correlations and combinations of relationship between them. Results showed that the concentrations of indicators of faecal contamination, whether within or over the values established by legislation, are not always related to the presence and density of microorganisms of environmental origin but the regression models used can help to describe how these latter microorganisms can be in relation to levels of the other parameters. The difficulty is evident of the predictability of health effects swimming-associated; for this reason more complex models that are currently used should be taken into account for minimising the risk for bathers.

Antibiotic Resistance Genes and Potentially Pathogenic Bacteria in the Central Adriatic Sea: Are They Connected to Urban Wastewater Inputs?

“…The large majority of PPB phylotypes were shared between treated sewage and seawater samples, except for Vibrio and Coxiella, suggesting that WWTPs may represent the primary source for PPB in marine areas investigated in this study. Indeed, the presence of Vibrio, Pseudomonas, and Coxiella phylotypes in marine waters is not uncommon due to the ubiquitous nature of representatives of these genera [75][76][77]. However, deeper investigations and the use of long-read sequencing approaches may reveal differences that could not be appreciated with the methodologies chosen for the purposes of this study.…”

EmergingAeromonasSpecies Infections and Their Significance in Public Health

“…Bonadonna et al [39] studied the incidence of bacteria of anthropomorphic origin and those of autochthonous origin using model systems for prediction of public health risk to marine bathers. The resulting model used salinity, total coliforms, fecal coliforms, Escherichia coli , and location as analytical variables for presence of aeromonads.…”

“…Chan et al [37] also documented the incidence of aeromonads in 6.9% of adult patients with acute diarrhea in Hong Kong. Previous reports on incidence rates from symptomatic patients range from 0.04% to 21% [38, 39]. Generally, the isolation rates in human fecal specimens vary as geographical areas, food habits, level of sanitation, patient populations, and isolation methods affects the recovery rates [38].…”

Conditional Forest Models Built Using Metagenomic Data Accurately Predicted Salmonella Contamination in Northeastern Streams

“…Furthermore, Aeromonas has morphological and biochemical characteristics similar to those of microorganisms belonging to Enterobacteriaceae , a family of microorganisms that includes Salmonella and is commonly used as an indicator of poor hygienic conditions in food systems ( 41 ). Bonadonna et al reported that the presence of E. coli and fecal coliforms was associated with lower counts of Aeromonas , whereas the prevalence of total coliforms (which include non- Enterobacteriaceae ) was associated with higher counts of Aeromonas in bathing waters along the coast of the Adriatic Sea ( 42 , 43 ). Due to limited information available, the ecological relationship between Salmonella and Aeromonas is poorly understood.…”