Bianca Maria Are

Pretreatment Antibiotic Resistance in Helicobacter pylori Infection: Results of Three Randomized Controlled Studies

Background. Although combinations of antibiotics and antisecretory drugs are useful for treatment of Helicobacter pylori infection, treatment failure is common. The aim of this study was to evaluate the relation between pretreatment antibiotic resistance and outcome by using six different treatment regimens for H. pylori infection.

Amoxycillin resistance is one reason for failure of amoxycillin-omeprazole treatment of Helicobacter pylori infection

The efficacy of omeprazole and amoxycillin dual therapy to treat Helicobacter pylori infection has been inconsistent, suggesting the presence of host or bacterial factors influencing treatment success. The aim of this study was to assess the role of pre‐treatment amoxycillin resistance in the efficacy of omeprazole and amoxycillin dual therapy.

Prevalence study of Legionella spp. contamination in ferries and cruise ships

BackgroundIn the last years, international traffic volume has significantly increased, raising the risk for acquisition of infectious diseases. Among travel-associated infections, increased incidence of legionellosis has been reported among travellers.Aim of our study was: to describe the frequency and severity of Legionella spp. contamination in ferries and cruise ships; to compare the levels of contamination with those indicated by the Italian ministerial guidelines for control and prevention of legionellosis, in order to assess health risks and to adopt control measures.MethodA prevalence study was carried out on 9 ships docked at the seaports of northern Sardinia in 2004. Water samples were collected from critical sites: passenger cabins, crew cabins, kitchens, coffee bars, rooms of the central air conditioning system. It was performed a qualitative and quantitative identification of Legionella spp. and a chemical, physical and bacteriological analysis of water samples.ResultsForty-two percent (38/90) water samples were contaminated by Legionella spp.. Positive samples were mainly drawn from showers (24/44), washbasins (10/22). L. pneumophila was isolated in 42/44 samples (95.5%), followed by L. micdadei (4.5%).Strains were identified as L. pneumophila serogroup 6 (45.2%; 19 samples), 2–14 (42.9%), 5 (7.1%) and 3 (4.8%). Legionella spp. load was high; 77.8% of the water samples contained > 104 CFU/L.Low residual free chlorine concentration (0–0,2 mg/L) was associated to a contamination of the 50% of the water samples.ConclusionLegionella is an ubiquitous bacterium that could create problems for public health.We identified Legionella spp. in 6/7 ferries. Microbial load was predominantly high (> 104 CFU/L or ranging from 103 to 104 CFU/L). It is matter of concern when passengers are subjects at risk because of Legionella spp. is an opportunist that can survive in freshwater systems; high bacterial load might be an important variable related to diseases occurrence.High level of contamination required disinfecting measures, but does not lead to a definitive solution to the problem. Therefore, it is important to identify a person responsible for health safety in order to control the risk from exposure and to apply preventive measures, according to European and Italian guidelines.

Extragenital human papillomavirus 16-associated bowen's disease

We describe a case of a 67-year-old male with multiple erythematous, hyperkeratotic, and ulcerated lesions that occurred 10 years before patient’s observation, increasing in size and number over the years. Particularly, the widest lesion is hyperkeratotic and exudative plaque on the trunk, focal ulcerated, sized 11 cm × 8 cm [Figure 1]. Other lesions were observed on the trunk and ears. However, human papillomavirus (HPV)-related lesions were never detected on genitalia and the patient denied chronic ultraviolet and arsenic exposure.

[Microbial contamination of surfaces in the departments of Medicine and Surgery: single center prevalence study in Sassari (Italy)].

INTRODUCTION Healthcare-associated infections (HAIs) represent a clinical and public health problem worldwide. Microbial transmission can frequently occurs between patients or between patients and health-care workers; however, several devices and surfaces could act as reservoir and source of microorganisms. Aim of this cross-sectional study was to show the microbial contamination of devices or surfaces located in the departments of Medicine and Surgery of an Italian University Hospital. METHODS Swabs were used to sample devices (keyboards, phones) and surfaces (door handles, water closed, light switches), at two different time-points. Samples were then evaluated in the UOC Hygiene and Preventive Medicine laboratory of the same University Hospital. RESULTS 189 swabs were collected, 95 (53.3%) from the Medicine and 94 (49.7%) from the Surgery Department. The bacterial contamination prevalence was 42.9%, significantly higher in the Medicine than in the Surgery Department (51.6% vs 34%; p=0.015). A greater contamination was observed in water closed (22/36, 61.1%), phones (22/40, 55%), and keyboards of personal computers (18/36, 51.4%; p<0.001). No statistical differences were detected in the contamination rates when the different time-points were compared, as well as in the isolation rate of pathogenic bacterial strains. DISCUSSION This survey highlights the potential role of devices and surfaces in the HAI pathogenesis. Further longitudinal and analytical studies might better assess the HAI risk associated with bacterial contamination in nosocomial settings.