The Effect of Vitamin D Supplementation Post COVID-19 Infection and Related Outcomes: A Systematic Review and Meta-Analysis.

Background: Vitamin D's role in COVID-19 management remains controversial. This meta-analysis aimed to evaluate the efficacy of vitamin D supplementation in patients with SARS-CoV-2 infection, focusing on mortality, intensive care unit (ICU) admissions, intubation rates, and hospital length of stay (LOS).

Methods: A systematic review of PubMed/MEDLINE, Scopus, Cochrane, and Google Scholar databases was conducted.

Outbreak in an ICU: Investigation of Possible Routes of Transmission and Implementation of Infection Control Measures.

, a non-fermentative, ubiquitous, gram-negative aerobic bacterium, is associated with high mortality rates, particularly in immunocompromised or debilitated patients. The prevalence rate of ICU-acquired pneumonia episodes caused by this microorganism has been found to be 2%. has been identified as one of the top 10 microorganisms responsible for such infections in EU/EEA countries.

The management of healthcare-related infections through lean methodology: systematic review and meta-analysis of observational studies.

Introduction: Lean is largely applied to the health sector and on the healthcare-associated infections (HAI). However, a few results on the improvement of the outcome have been reported in literature. The purpose of this study is to analyze if the lean application can reduce the HAI rate.

Evaluation of Multidrug-Resistant in Healthcare Facility Water Systems.

According to the WHO, is one of the antibiotic-resistant bacteria that represent the biggest threat to public health. The aim of the study was to establish the prevalence of antibiotic-resistant in the water systems of various healthcare facilities over the course of nine years. A total of 4500 tap water system samples were taken from seventeen healthcare facilities.

Microbial Air Monitoring in Turbulent Airflow Operating Theatres: Is It Possible to Calculate and Hypothesize New Benchmarks for Microbial Air Load?

Multiple studies have demonstrated the presence of microorganisms commonly associated with surgical site infections (SSIs), in the air within the operating theatre (OT). In some countries such Italy, the limit of microbial concentration in the air for OT with turbulent airflows is 35 CFU/m for an empty OT and 180 CFU/m during activity. This study aims to hypothesize new benchmarks for the airborne microbial load in turbulent airflow operating theatres in operational and at rest conditions using the percentile distribution of data through a 17-year environmental monitoring campaign in various Italian hospitals that implemented a continuous quality improvement policy.

Is Post-Reprocessing Microbiological Surveillance of Duodenoscopes Effective in Reducing the Potential Risk in Transmitting Pathogens?

The use of a contaminated endoscope may lead to infections due to the transmission of potential pathogens from patient to patient. Post-reprocessing microbiological surveillance of four duodenoscopes was carried out over a three-year period in the Digestive Endoscopy Unit of an Italian hospital. Sampling of duodenoscopes was performed after the devices have been reprocessed.

Coffee Consumption and Risk of Colorectal Cancer: A Systematic Review and Meta-Analysis of Prospective Studies.

Coffee is a blend of compounds related to gastrointestinal physiology. Given its popularity and the epidemiology of colorectal cancer, the impact of this beverage on public health could be considerable. Our aim was to provide an updated synthesis of the relationship between coffee consumption and the risk of colorectal cancer.

Epidemiology, management, and outcome of carbapenem-resistant Klebsiella pneumoniae bloodstream infections in hospitals within the same endemic metropolitan area.

In the last decade, carbapenem-resistant Klebsiella pneumoniae (CR-Kp) has become endemic in several countries, including Italy. In the present study, we assessed the differences in epidemiology, management, and mortality of CR-Kp bloodstream infection (BSI) in the three main adult acute-care hospitals of the metropolitan area of Genoa, Italy. From January 2013 to December 2014, all patients with CR-Kp BSI were identified through the computerized microbiology laboratory databases of the three hospitals.

Epidemiology and biomolecular characterization of carbapenem-resistant in an Italian hospital.

Objective: To describe the occurrence of CRKP infections in a tertiary care hospital and to analyse the allelic profiles of the clinical strains involved and the most frequent carbapenemases.

Design: The study analyzed cases of infection due to CRKP in the period 2013-2014; 147 cases were recorded, most of which (82.31%) were in-hospital infections.

Operating room environment and surgical site infections in arthroplasty procedures.

Background: The rate of surgical site infections (SSI) is strongly influenced by operating room quality, which is determined by the structural features of the facility and its systems and by the management and behavior of healthcare workers. The aim of the present study was to assess microbial contamination in the operating room during hip- and knee-replacement procedures, the behavior of operating room staff and the incidence of SSI through postdischarge surveillance.

Methods: Microbial contamination was evaluated by active and passive sampling at rest and in operating conditions.

Chemical characterisation of the coarse and fine particulate matter in the environment of an underground railway system: cytotoxic effects and oxidative stress-a preliminary study.

Background: Exposure to the particulate matter produced in underground railway systems is arousing increasing scientific interest because of its health effects. The aim of our study was to evaluate the airborne concentrations of PM10 and three sub-fractions of PM2.5 in an underground railway system environment in proximity to platforms and in underground commercial areas within the system, and to compare these with the outdoor airborne concentrations.

Operating theatre quality and prevention of surgical site infections.

Surgical site infections (SSI) account for 14% to 17% of all hospital-acquired infections and 38% of nosocomial infections in surgical patients. SSI remain a substantial cause of morbidity and death, possibly because of the larger numbers of elderly surgical patients or those with a variety of chronic and immunocompromising conditions, and emergence of antibiotic-resistant microorganisms. Factors causing surgical site infection are multifarious.

Multidrug-resistant Acinetobacter baumannii outbreak: an investigation of the possible routes of transmission.

Objectives: To establish the possible sources and routes of transmission of a multidrug-resistant Acinetobacter baumannii outbreak involving 22 patients.

Study Design: Descriptive, retrospective study.

Methods: An environmental investigation was undertaken, monitoring surfaces, air and water.

Can particulate air sampling predict microbial load in operating theatres for arthroplasty?

Several studies have proposed that the microbiological quality of the air in operating theatres be indirectly evaluated by means of particle counting, a technique derived from industrial clean-room technology standards, using airborne particle concentration as an index of microbial contamination. However, the relationship between particle counting and microbiological sampling has rarely been evaluated and demonstrated in operating theatres. The aim of the present study was to determine whether particle counting could predict microbiological contamination of the air in an operating theatre during 95 surgical arthroplasty procedures.

Spread of multidrug carbapenem-resistant Acinetobacter baumannii in different wards of an Italian hospital.

Background: Multidrug-resistant Acinetobacter baumannii (MDRAB) is an important cause of hospital acquired infection. We describe a 7-month outbreak of a MDRAB infection involving various wards of an Italian hospital and an investigation of the possible source of the infection was conducted.

Methods: A baumannii was isolated from various biological samples from 22 colonized or infected patients, and was identified and characterized for its antibiotic sensitivity.

Environmental monitoring programme in the cell therapy facility of a research centre: preliminary investigation.

Introduction: Recent discoveries in cell therapy research present new opportunities for cellular products to be used to treat severe, and as yet incurable, diseases. It is therefore essential to implement a quality control programme in order to ensure that safe cells and tissues are provided.

Methods: In a preliminary phase of the setting up of a the cellfactory, monitoring was carried out monthly over a 6-month period in one out of three cell therapy laboratories and filter rooms in order to evaluate the microbial contamination of air and surfaces and the presence of airborne particulates.

Investigation of organizational and hygiene features in dentistry: a pilot study.

Introduction: In dentistry, as in surgery, there is a risk of cross-infection for both patients and staff The aim of this research was to evaluate procedures and behaviors enacted by dental staff which might engender a risk for themselves and their patients.

Methods: A questionnaire was administered to 106 dental workers in Genoa (Italy), both public and private. Whenever personal interviews were conducted, the facilities involved were also inspected and the activities of the dental staff were observed directly.

Surface disinfection: evaluation of the efficacy of a nebulization system spraying hydrogen peroxide.

Introduction: The study assessed the efficacy of a system of nebulization of a hydrogen peroxide-based solution for surface disinfection.

Methods: Different concentrations (1, 2 and 4 ml/m3) of the same disinfectant solution (active principle: hydrogen peroxide) were nebulized inside a 50 m3 experimental environment. Sampling was carried out on both horizontal and vertical surfaces, and the total bacterial load at 37 degrees C was determined by means of direct contact with Rodac plates.

Evaluation of contamination by blood aerosols produced during various healthcare procedures.

This study aimed to quantify the blood content of aerosols produced during dental, maxillofacial and autopsy procedures and to identify those activities which involve the greatest risk of infection due to exposure to blood-containing aerosols. A total of 132 air samples were taken in several dental cubicles, a maxillofacial operating theatre and an autopsy room. The concentration of haemoglobin (Hb) in the samples was quantified and, for each day of sampling, the concentration of blood/m(3) of air aspirated (muL blood/m(3) air) was calculated.

Evaluation of the risk of infection through exposure to aerosols and spatters in dentistry.

Background: Many dental procedures produce extensive aerosols and splatters that are routinely contaminated with microorganisms.

Methods: Air containing blood-bearing aerosols and surfaces contaminated by sedimenting blood particulate was sampled in 5 different dental cubicles. To assess contamination by blood particulate, the concentration of hemoglobin (Hb) in the air and on the sedimentation surfaces was determined.

Evaluation of environmental contamination by glutaraldehyde in an outpatient facility for digestive endoscopy in an Italian hospital.

The potential harmful effects of glutaraldehyde on human health are well known, and in recent years various new substitutes for this compound have been proposed for the disinfection and thorough sterilization of medical instruments. Nevertheless, glutaraldehyde is still widely used in hospital environments. In order to evaluate environmental contamination by glutaraldehyde vapours, the rooms of a hospital out-patient department of digestive endoscopy were monitored in 2005; a total of 52 samples were taken.

A new microbiological problem in intensive care units: environmental contamination by MRSA with reduced susceptibility to glycopeptides.

The present study evaluated the percentage of methicillin-resistant Staphylococcus aureus strains with reduced susceptibility to glycopeptides in four intensive care units (ICU) by means of environmental sampling of air and representative surfaces. The total bacterial count was taken and possible S. aureus strains were subsequently isolated.

Nitrous oxide pollution in operating theatres in relation to the type of leakage and the number of efficacious air exchanges per hour.

Introduction: As occupational exposure to anaesthetic gases is one of the main risks for operating theatre staff an environmental monitoring campaign was conducted in order to evaluate the degree of pollution by nitrous oxide (N2O) in the operating theatres of some hospital facilities in Liguria.

Methods: Any leaks (systemic and/or managerial) of anaesthetic gas and the number of efficacious air exchanges per hour supplied by air-conditioning systems were evaluated by means of an IR spectrometer, which was wired to a computer for data collection and analysis. The concentration of nitrous oxide in the centre of each operating theatre was measured by means of chemo-adsorbent cartridges analysed by gas chromatography.

[Occupational exposure to formaldehyde in three pathology departments].

Although formaldehyde has recently been classified by the IARC as "carcinogenic in humans" (class 1), it is still widely used in pathology departments for the fixing and conservation of biological tissues. Its use therefore raises the question of occupational exposure. The present paper reports the results of an environmental monitoring campaign to evaluate pollution by formaldehyde in various areas of three pathology departments.

Fungal contamination in hospital environments.

Objectives: To assess the degree of fungal contamination in hospital environments and to evaluate the ability of air conditioning systems to reduce such contamination.

Methods: We monitored airborne microbial concentrations in various environments in 10 hospitals equipped with air conditioning. Sampling was performed with a portable Surface Air System impactor with replicate organism detection and counting plates containing a fungus-selective medium.