BACKGROUND Although the contamination of the dental environment and personnel through aerosol contamination is a definite source of cross contamination; there is little data on the microbial involvement of the dental environment. MATERIALS AND METHODS A total of 100 samples were taken from various inanimate surfaces in the clinical dental setting were collected aseptically by rotating sterile...

Utensils and equipment from meat-processing facilities are considered relevant cross-contamination points of Listeria monocytogenes to foods, demanding tracking studies to identify their specific origins, and predict proper control. The present study aimed to detect L. monocytogenes in a beef-processing facility, investigating the diversity of serotypes and pulsotypes in order to identify the p...

Human noroviruses (HuNoVs) are a primary cause of epidemic and sporadic cases of non-bacterial gastroenteritis; easily transmitted by the fecal-oral route which involves food as a frequent vehicle causing HuNoVs to be the major agent of food-borne illness worldwide. Primary factors contributing to the food contamination are contacts with infected food handler, cross-contamination during prepara...

INTRODUCTION Surgical barrier facilities are by necessity highly controlled to maintain sterility. Any breach of containment can introduce contaminants which could potentially find their way into the animals being operated on. As such, personnel undergo stringent gowning and entry procedures, quarantines if they visit other animal facilities and various other operating procedures to minimise th...

The objectives of this study were to assess the microbiological and physical/chemical quality of water in broiler turkey farms in the province of Khemisset (north-western Morocco) and, based on a questionnaire, to ascertain potential risk factors for contamination of drinking water with faecal coliforms. A total of 80 samples were collected and analysed in 20 farms (four from each farm). At the...

Listeria monocytogenes is a bacterium capable to adhere to the surfaces of equipment and utensils and subsequently form biofilms. It can to persist in the food processing environmental for extended periods of time being able to contaminate the final product. The aim of this study was to trace the contamination route of L. monocytogenes on a fresh mixed sausage processing line, from raw material...

Concern about contamination of fibreoptic endoscopes with human immunodeficiency virus (HIV) has generated a variety of disruptive and possibly unnecessary infection control practices in endoscopy units. Current recommendations on the cleaning and disinfection of endoscopes have been formulated without applied experimental evidence of the effective removal of HIV from endoscopes. To study the k...

Several accidental events that occurred in chemical and process plants in the last decades evidenced that floods may cause severe damages to process plants and storage sites, resulting in multiple and extended releases of hazardous substances. Moreover, besides conventional release scenarios (fires, explosions and toxic clouds), floods may cause two further critical events: significant environm...

Preventing or avoiding microbial contamination of plant tissue cultures is critical to successful micropropagation. Epiphytic aIKI endophytic organisms can cause severe losses to micropropagated plants at each stage of growth (Cassells. 1991; Debergh arxi Vanderschaeghe. 1988; Leifert eot at. 1991). Bacterial contaminants are often diffiCult to detect because they remain mostly within the plant...

Nearly all known biological warfare agents are intended for aerosol application. Although less effective as potable water threats, many are potentially capable of inflicting heavy casualties when ingested. Significant loss of mission capability can be anticipated even when complete recovery is possible. Properly maintained field army water purification equipment can counter this threat, but per...