Balneotherapy and cortisol levels: an updated systematic review and meta-analysis.

The main objective of this review is to examine the impact of balneotherapy on serum and salivary cortisol concentrations. A systematic search was conducted in PubMed, Scopus, Web of Science, PEDro, and Google Scholar. The databases were screened from inception up until April 2024. After screening the scientific literature, 845 articles were retrieved and 17 studies, involving a total of 765 participants, were eventually included in the review. Among them, four were randomized controlled trials, five were non-randomized studies, and eight were pre-post studies with no control group. The evidence gathered in this review indicates a significant short-term reduction in cortisol levels in healthy individuals undergoing balneotherapy, particularly those experiencing high levels of stress. Conversely, in patients with rheumatic conditions (especially if elderly), increases in cortisol levels induced by balneotherapy can act as beneficial hormetic stress, reducing inflammatory mediators and improving pain and functional quality of life. The meta-analysis shows an overall trend of reduction in stress hormone levels, more pronounced in the intervention group undergoing mud-balneotherapy compared to the control group, a finding that, however, does not reach statistical significance (g=-0.11 [95% CI: -0.30; 0.08]; p > 0.05). Current scientific evidence demonstrates that balneotherapy has a positive impact on the regulation of cortisol levels. The regulation of the hypothalamic-pituitary-adrenal axis and the beneficial effects observed on health parameters and quality of life allow mud-balneotherapy to be classified as eustressful stimuli useful in preventing stress-related pathologies in healthy individuals and in alleviating symptoms in patients with chronic conditions. Future research on the topic is advised.

Consumption of Energy Drinks among Italian University students: a cross-sectional multicenter study.

PURPOSE: The aim of the study was to evaluate the caffeinated Energy Drinks (EDs) consumption among a large sample of Italian undergraduates and its association with some of the major lifestyle risk factors. METHODS: Students attending twelve public Italian universities were involved between October 2021 and May 2022. Information on socio-demographic characteristics, ED consumption, and on health-related behaviors of participants was collected by the use of a web-based questionnaire. RESULTS: A total of 2165 students participated in the study and 15.2% of them reported having used caffeinated EDs in the last six months, mainly once a month (41.5%). In comparison with non-users, ED users showed a higher proportion of males (p < 0.001) and a higher father's educational level (p = 0.003), came mainly from Northern universities (p = 0.004) and life sciences degree courses (p < 0.001). Besides, ED users reported higher BMI values (p = 0.003), more particular dietary regimens (p < 0.001), higher levels of weekly moderate-vigorous physical activity (p < 0.001) and participation in sports (p < 0.001) and in team sports (p = 0.003), and higher proportion of smokers (p < 0.001) and alcohol drinkers (p = 0.005). ED use was negatively related with female gender (OR 0.546; 95% CI 0.374-0.798), the Mediterranean diet (OR 0.587; 95% CI 0.362-0.951) and coming from the center of Italy (OR 0.500; 95% CI 0.275-0.909) and positively associated with tobacco smoke (OR 1.712; 95% CI 1.176-2.492) and participation in a team sport (OR 1.686; 95% CI 1.051-2.707). CONCLUSION: These findings could encourage figures engaged in education to increase the students' awareness on this issue in order to prevent the excessive use of EDs and associated unhealthy behaviors, especially in the most interested subgroups.

Clinical efficacy of medical hydrology: an umbrella review.

The aim of this research was to summarize available scientific evidence on the efficacy of medical hydrology for the management of any health condition. The search was conducted on 26th March 2021, in the following databases: Medline (via PubMed), EMBASE, Web of Science, Cochrane Library, and Google Scholar. All relevant literature reviews investigating the clinical efficacy of interventions characterized by the use of natural mineral waters and muds were included. The quality of studies was assessed with the "AMSTAR 2" tool. After article screening, 49 reviews were included in this work. Overall, retrieved scientific evidence suggests that spa therapy is beneficial for patients affected by some specific musculoskeletal conditions, with improvements potentially lasting up to 9 months. Moreover, balneotherapy can be an integrative support for the management of chronic venous insufficiency and some inflammatory skin diseases like psoriasis. The role of spa therapy in rehabilitation appears relevant as well. More limited, although interesting evidence exists for inhalation and hydropinic therapies. Globally, retrieved evidence suggests that, besides individual wellbeing, medical hydrology can be useful for public health. In particular, higher-quality studies seem to support the integrative use of spa-related interventions for conditions like osteoarthritis, fibromyalgia, low back pain of rheumatic origin, and chronic venous insufficiency. However, the body of evidence has some limitations and further clinical trials should be designed for each relevant application to consolidate and expand acquired knowledge.

Control and prevention measures for legionellosis in hospitals: A cross-sectional survey in Italy.

Risk assessment, environmental monitoring, and the disinfection of water systems are the key elements in preventing legionellosis risk. The Italian Study Group of Hospital Hygiene of the Italian Society of Hygiene, Preventive Medicine, and Public Health and the Italian Multidisciplinary Society for the Prevention of Health Care-Associated Infections carried out a national cross-sectional survey to investigate the measures taken to prevent and control legionellosis in Italian hospitals. A multiple-choice questionnaire was developed, comprising 71 questions regarding hospital location, general characteristics, clinical and environmental surveillance, and control and preventive measures for legionellosis in 2015. Overall, 739 hospitals were enrolled from February to June 2017, and 178 anonymous questionnaires were correctly completed and evaluated (response rate: 24.1%). The survey was conducted using the SurveyMonkey® platform, and the data were analyzed using Stata 12 software. Of the participating hospitals, 63.2% reported at least one case of legionellosis, of which 28.2% were of proven nosocomial origin. The highest case numbers were reported in the Northern Italy, in hospitals with a pavilion structure or cooling towers, and in hospitals with higher numbers of beds, wards and operating theaters. Laboratory diagnosis was performed using urinary antigen testing alone (31.9%), both urinary antigen testing and single antibody titer (17.8%), or with seroconversion also added (21.5%). Culture-based or molecular investigations were performed in 28.8% and 22.1% of the clinical specimens, respectively. The water systems were routinely tested for Legionella in 97.4% of the hospitals, 62% of which detected a positive result (> 1000 cfu/L). Legionella pneumophila serogroup 2-15 was the most frequently isolated species (58.4%). The most common control measures were the disinfection of the water system (73.7%), mostly through thermal shock (37.4%) and chlorine dioxide (34.4%), and the replacement (69.7%) or cleaning (70.4%) of faucets and showerheads. A dedicated multidisciplinary team was present in 52.8% of the hospitals, and 73% of the hospitals performed risk assessment. Targeted training courses were organized in 36.5% of the hospitals, involving nurses (30.7%), physicians (28.8%), biologists (21.5%), technicians (26.4%), and cleaners (11%). Control and prevention measures for legionellosis are present in Italian hospitals, but some critical aspects should be improved. More appropriate risk assessment is necessary, especially in large facilities with a high number of hospitalizations. Moreover, more sensitive diagnostic tests should be used, and dedicated training courses should be implemented.

Serological and molecular identification of Legionella spp. isolated from water and surrounding air samples in Italian healthcare facilities.

BACKGROUND: Legionella is an intracellular microorganism living in natural and artificial aquatic environments. Although its transmission to humans is linked to the inhalation of contaminated aerosols, there is no validated air sampling method for the control and prevention of the disease. The aim of the present study was to provide more information on the distribution of Legionella spp. in indoor environments and to determine whether the same Legionella strains are isolated from air and water samples. METHODS: Ten healthcare facilities located in seven regions of Italy were enrolled. The serological typing of Legionella spp. from water samples and the surrounding air by active and passive sampling was assessed using polyvalent and monovalent antisera. Subsequently, the strains identified as Legionella pneumophila (Lpn) underwent molecular typing by sequence-based typing (SBT) using seven genes (flaA, pilE, asd, mip, mompS, proA, and neuA). The allelic profile number was assigned using the European Working Group for Legionella Infections-SBT database. RESULTS: Lpn serogroup 6 was the most prevalent serogroup; it was found simultaneously in the air and water samples of three different healthcare facilities. In the remaining seven hospitals, Lpn serogroups 1, 6, 7, 9, and 12 were isolated exclusively from water samples. The molecular investigation showed that Lpn strains in the water and air samples of each positive healthcare facility had the same allelic profile. Strains, identified as sequence types (STs) 728 and ST 1638+ST 1324, were isolated in two respective healthcare facilities, and a new strain, identified as ST 1989, was obtained in one healthcare facility. CONCLUSION: The application of the SBT method allowed to verify the homology among Legionella strains from water samples and the surrounding air. The results showed that the same Lpn strains were present in the air and water samples, and a new Legionella strain was identified.

The use of onabotulinum toxin A (Botox(®)) in the treatment of chronic migraine at the Parma Headache Centre: a prospective observational study.

Chronic migraine is a debilitating headache, whose treatment is often complicated by the concomitant overuse of symptomatic medication and by the poor efficacy of standard prophylactic treatments. The PREEMPT studies have demonstrated the efficacy and tolerability of onabotulinum toxin A (Botox(®)) in the treatment of this headache type. Data about its use in clinical practice are still scarce. Our study evaluated all subjects with chronic migraine who were treated with onabotulinum toxin A between February 2014 and November 2015 at the Parma Headache Centre. Botox was injected according to the PREEMPT paradigm every 3 months. The data about variations in the number of headache days and in symptomatic medication intake before and after the Botox injections were collected from the patients' headache diaries. The study also evaluated tolerability to treatment, disability, and depressive symptoms. Of the 52 treated subjects, 14 received Botox treatment for at least 9 months and showed a significant decrease in the median number of headache days (from 19 to 14.5, p = 0.011) and in the median number of days of symptomatic medications intake and symptomatic drugs. Overall, the treatment was well tolerated. The average MIDAS and BDI-II scores after 9 months were reduced, though not significantly. The treatment with Botox proved effective and well tolerated in our clinical practice. Further studies on larger patient samples will help shed light on the persistence of the drug's effect at long term and identify the predictive factors of response to treatment.

Appropriate perioperative antibiotic prophylaxis: challenges, strategies, and quality indicators.

INTRODUCTION: Surgical site infections (SSIs) are common surgical complications and perioperative antibiotic prophylaxis (PAP) contributes to the reduction of the associated risk. The aim of the present review article is to summarize the most recently published studies with a special focus on challenges, strategies and quality indicators of PAP. METHODS: Literature searches in the Medline database, using PubMed, were carried out for studies published from January 2011 to April 2015. Inclusion criteria were all types of epidemiological studies investigating: i. compliance with PAP recommendations at different levels by using process indicators, and ii. the effect of different interventions conducted in order to improve PAP compliance. RESULTS: A total of 28 studies were retrieved. Overall compliance with all included PAP indicators ranged from 9.4% to 80%. Generally, compliance with the PAP process indicators significantly improved after interventions. CONCLUSIONS: The present review summarizes the recent published studies and indicates an overall inadequate compliance with PAP recommendations, underlining the need to develop and to implement successful strategies to improve adherence to guidelines. Different interventions were found efficacious in order to increase compliance with appropriate PAP administration.

Molecular epidemiology tools in the management of healthcare-associated infections: towards the definition of recommendations.

INTRODUCTION: Healthcare-Associated Infections (HAIs) are an important cause of morbidity and mortality worldwide and have a significant economic impact for health systems. Molecular epidemiology tools have a central role in HAI prevention programs. In order to give an overview of their specific advantages and disadvantages we reported current and new molecular typing methods for HAI outbreak detection and epidemiological surveillance. METHODS: The current review was drafted as a short version of a longer document written by the Public Health Genomics (GSP) working group, and the Italian Study Group of Hospital Hygiene (GISIO), entitled Molecular epidemiology of Healthcare Associated Infections: recommendations from the Italian Society of Hygiene, Preventive Medicine and Public Health (SItI). This text considers various aspects related to HAIs: the role of genotyping and bioinformatics, the organizational levels of laboratories, as well as ethical and economic aspects. CONCLUSIONS: The use of molecular epidemiology represents a key tool in the management of HAIs, to be used as a complement to conventional control measures. The present contribution aims to increase knowledge on the proper use of such methods, given the major challenge HAI represents for National Health systems.

Influenza and immunization: a quantitative study of media coverage in the season of the «Fluad case¼.

BACKGROUND: Seasonal influenza generates serious health and economic losses. In the last influenza season, the report of three deaths originally blamed on the Fluad vaccine drew widespread attention from the media and is likely to have had a major negative impact on vaccine uptake. OBJECTIVE: We quantitatively analyzed media coverage on influenza and immunization-related topics on all published issues of the Italian newspaper ranking first in circulation, over one year. DESIGN: We retrieved relevant key words and articles, reporting on article topic, length, position, and approach to immunization, and on other selected indicators' summary statistics, trends, and correspondence with key events. RESULTS: Selected key words were retrieved 798 times over the study period, 34% specifically focusing on influenza. The average number of influenza-related key words per issue was 96%higher in the four-day «uncertainty¼ period from when the deaths were first reported to the release of the test results disproving any causal association between the deaths and the vaccine (time frame #1), as compared to the whole study period. Ninety relevant articles were included in the analysis, 51%focusing on influenza, the average number/issue being 97%higher during time frame #1. During time frame #1, articles were also longer and located in the main sections of the newspapers. No articles were published at the launch of the seasonal influenza immunization campaign. CONCLUSION: We propose an analytic model of media monitoring that could be effectively applied to support health authorities and representatives of the scientific community in conveying health education messages through the media.

Antibiotic consumption and resistance: results of the SPIN-UTI project of the GISIO-SItI.

OBJECTIVE: To evaluate trends and association between antibiotic consumption and resistance during an eight-year period, from 2006 to 2013. DESIGN: Prospective multicenter study. SETTING AND PARTICIPANTS: Intensive Care Units (ICUs) participating in the four editions of the Italian nosocomial infections surveillance in the ICU Network (Sorveglianza Prospettica delle Infezioni Nosocomiali nelle Unità di Terapia Intensiva, SPIN-UTI project). MAIN OUTCOME MEASURES: The isolation density of selected species of microorganisms, antibiotic resistance rates (RRs), incidence density of resistant isolates and antimicrobial usage density were calculated. RESULTS: RRs of carbapenem-resistant Acinetobacter baumannii, of carbapenem-resistant Klebsiella pneumoniae, of third-generation cephalosporin (3GC)-resistant K. pneumoniae and of 3GC-resistant Escherichia coli showed significant increasing trends (p ≤0.001). The consumption of each antibiotic class varied with years, although not significantly. Significant strongly positive correlations were detected between RRs and antibiotic consumption. CONCLUSIONS: The present study describes high RRs and increasing trends of resistant microorganisms and highlights the need for continuous comprehensive strategies targeting not only the prudent use of antibiotics, but also infection control measures to limit the epidemic spread of resistant isolates.

Antibiotic resistance as a major public health concern: epidemiology and economic impact.

Antimicrobial resistance (AMR) is mainly sustained by the improper use of antibiotics and has become a global public health concern both in the field of human and animal health. Italy has the highest prevalence of AMR among European countries, in particular carbapenem-resistant Klebsiella pneumoniae, which reached 34.3% in 2013. Multidrug-resistant microorganisms' infections are associated with increased risk of complications, higher hospitalization rates, increased healthcare costs, loss of productivity and increased mortality. This paper summarizes the most recent epidemiological data regarding the spread of antibiotic resistance in Italy, consumption and economic impact, outlining the need for timely action and integrated approaches in all countries.

Compliance with guidelines on antibiotic prophylaxis in hip and knee arthroplasty in Italy: results of the GISIO-ISChIA project.

BACKGROUND: The Perioperative Antibiotic Prophylaxis (PAP) contributes considerably to the total amount of antibiotics used in hospitals and has been shown to be associated with increase in antibiotic resistance and healthcare costs. The level of compliance with the national guidelines of current practices of PAP for elective hip and knee prosthesis procedures in a network of Italian hospitals (the multicentre Surgical Site Infection surveillance project GISIO-ISChIA), has been evaluated. METHODS: Compliance of the current prophylactic antibiotic practices with the published national guidelines was assessed for each included operative procedure, considering indication, timing of administration, prescribed antimicrobial agent and total duration of prophylaxis. RESULTS: A total of 14 hospitals and 1285 surgical procedures were included. 99.4% of patients received antimicrobial prophylaxis pre-operatively and 73.0% of patients received PAP within the recommended time period (within 60 minutes before incision). The rate of compliance with discontinuation of PAP within 24 hours after initiation of surgery was 70.2%. Taking into account all doses administered, the antibiotic was chosen appropriately in 57.7% of patients. PAP was performed appropriately, in accordance with national guidelines, in 43.6% of surgical operations. CONCLUSIONS: Given the increasing number of replacement procedures in Italy and in Europe, the gap between the evidence-based guidelines and practice must be appropriately addressed in order to improve PAP practices.

Prevention of healthcare-associated infections: knowledge among dental students in seven Italian universities.

BACKGROUND: Lack of knowledge is the major reason for non-compliance with correct healthcare-associated infections (HAI) prevention procedures. The aim of this study was to evaluate knowledge of the Dental School (DSS) and Dental Hygiene (DHS) students with regard to the prevention of HAI, as basic knowledge for improving and harmonizing the educational content in the different Italian Universities. METHODS: A cross-sectional study was carried out using an anonymous questionnaire that was completed by DSS (I, II, III, IV, and V year) in seven Universities and DHS (I, II, and III year) in three Universities. The questions dealt with three specific areas: healthcare-associated infections, standard precautions and hand hygiene. Factors associated with an unacceptable level of knowledge (score <17.5) were analyzed using a logistic regression model. A p value <0.05 was considered to be significant. RESULTS: Five hundred and four questionnaires were collected: 81.5% for DSS and 18.5% for DHS. Mean overall score (±DS) achieved by the total number of students was 18.2±2.93 on an overall perfect score of 25; 18.2±3.04 for DSS and 17.8±2.31 for DHS. Stratifying by area, the average score 2.7±1.07 (53%) for HAI, 10.3±1.61 (85.9%) for standard precautions, and 5.2±1.44 (64.8%) for hand hygiene was observed. A significantly different level of knowledge (p<0.001) between DSS and DHS was observed only for HAI (2.8±1.07 for DSS vs 2.1±0.96 for DHS). Significant differences among the academic years were found only for DSS concerning HAI and standard precautions. The logistic regression model showed that an age <23 years was a risk factor for lack of knowledge on HAI, but a protective factor for lack of knowledge about standard precautions and hand hygiene; attending DH degree course was associated with lack of knowledge on HAI. CONCLUSIONS: Although the overall score obtained both by DSS and DHS indicated an acceptable level of knowledge, lack of knowledge was highlighted, in particular, for hand hygiene. Therefore, it is necessary to implement and validate effective teaching models in undergraduate courses in order to provide the scientific basis and the theoretical and practical preparation for the prevention and control of HAI.

[Cost analysis of sterilization facilities in the Rizzoli Hospital (Bologna, Italy): a study of different organizational models]. / Analisi dei costi della Centrale di Sterilizzazione dell'Istituto Rizzoli: analisi dei diversi modelli organizzativi.

Preventing healthcare-associated infections requires a number of actions, including adequate disinfection and sterilization of medical devices. A cost analysis of hospital sterilization processes is fundamental to increase quality and safety, reduce costs and to make a decision about outsourcing. The aim of this analysis was to determine the cost of sterilization and the average cost of surgical procedures at the Rizzoli hospital in Bologna (Italy), a largesurgical hospital that performs more than 11,000 surgical procedures per year.

Knowledge about tuberculosis among undergraduate health care students in 15 Italian universities: a cross-sectional study.

BACKGROUND: The Italian Study Group on Hospital Hygiene of the Italian Society of Hygiene, Preventive Medicine and Public Health conducted a multicentre survey aiming to evaluate undergraduate health care students' knowledge of tuberculosis and tuberculosis control measures in Italy. METHODS: In October 2012-June 2013, a sample of medical and nursing students from 15 Italian universities were enrolled on a voluntary basis and asked to complete an anonymous questionnaire investigating both general knowledge of tuberculosis (aetiology, clinical presentation, outcome, screening methods) and personal experiences and practices related to tuberculosis prevention. Data were analysed through multivariable regression using Stata software. RESULTS: The sample consisted of 2,220 students in nursing (72.6%) and medicine (27.4%) courses. Our findings clearly showed that medical students had a better knowledge of tuberculosis than did nursing students.Although the vast majority of the sample (up to 95%) answered questions about tuberculosis aetiology correctly, only 60% of the students gave the correct responses regarding clinical aspects and vaccine details. Overall, 66.9% of the students had been screened for tuberculosis, but less than 20% of those with a negative result on the tuberculin skin test were vaccinated. Multivariable regression analysis showed that age and type of study programme (nursing vs. medical course) were determinants of answering the questions correctly. CONCLUSIONS: Although our data showed sufficient knowledge on tuberculosis, this survey underlines the considerable need for improvement in knowledge about the disease, especially among nursing students. In light of the scientific recommendations concerning tuberculosis knowledge among students, progress of current health care curricula aimed to develop students' skills in this field is needed.

[Control of intubator associated pneumonia in intensive care unit: results of the GISIO-SItI SPIN-UTI Project]. / Controllo del rischio di polmonite associata a intubazione in terapia intensiva: risultati del Progetto SPIN-UTI del GISIO-SItI.

OBJECTIVE: To document reported Intubator Associated Pneumonia (IAP) prevention practices in Intensive Care Units (ICUs) and attitudes towards the implementation of a measurement system. DESIGN: In the framework of the SPIN-UTI project the «Italian Nosocomial Infections Surveillance in ICUs network¼, two questionnaires were made available online. The first was filled out by physicians working in ICUs in order to collect data on characteristics of physicians and ICUs, on clinical and measurement practices for IAP prevention, and attitudes towards the implementation of a measurement system. The second questionnaire was filled out for each intubated patient in order to collect data on prevention practices during ICU stay. SETTING AND PARTICIPANTS: ICUs participating to the fourth edition (2012-2013) of the SPIN-UTI project. MAIN OUTCOME MEASURES: Compliance to the component of the European bundle. RESULTS: The components of the bundle for the prevention of IAP are implemented, although to a different level, in the 26 participating ICUs. Overall compliance to all five practices of the European bundle has been reported in 21.1% of the 768 included patients. CONCLUSIONS: The present survey has documented a large potential for improvement in clinical and non-clinical practices aimed at preventing IAP in ICUs.

[Human Papillomavirus infection and vaccination: knowledge and attitudes of Italian general practitioners]. / Infezione da Papillomavirus umano e vaccinazione: conoscenze e ruolo dei medici di medicina generale.

OBJECTIVE: To assess General Pratictioner's (GPs) knowledge and attitudes about HPV infection and prevention. DESIGN AND PARTICIPANTS: A semi-structured survey was conducted from November to December 2013 among Italian GPs. Descriptive and univariate analyses were carried out. MAIN OUTCOME MEASURES AND RESULTS: 938 GPs were included in the study. 15% participated in continuing medical education courses focusing on HPV. GPs identified as HPV transmission routes: sexual (100%), cutaneous (15%), transplacental (13%), haematic (9%) and by air (2%); they considered HPV-related diseases: cervical (98%), vulvar and vaginal (42%), anal (39%), penile (38%) and oral (38%) cancer, genital warts (79%) and respiratory papillomatosis (12%). They knew HPV vaccination is to prevent HPV-associated cancer (60%), in particular cervical cancer (35%), genital warts (3%) and sexually transmitted diseases (2%). A total of 73% were aware of the existence of both available vaccines, 69% believed that immunization target population should be females before initiation of sexual activity, 87% knew the age of vaccine administration. No significant difference in knowledge was retrieved by age, gender, level of education or region of origin. CONCLUSION: We report a lack of knowledge on HPV infection and vaccination in GPs. GPs have a key role in the Italian health system. Although 12-year old patients are a small percentage of their patients, it is of fundamental importance to promote medical education and training among GPs in order to meet HPV coverage targets and control HPV-associated diseases.

[Legionella spp. contamination in indoor air: preliminary results of an Italian multicenter study]. / La contaminazione indoor da Legionella spp: risultati preliminari di una indagine multicentrica italiana.

OBJECTIVE: To propose a standardized protocol for the evaluation of Legionella contamination in air. DESIGN: A bathroom having a Legionella contamination in water >1,000 cfu/l was selected in 10 different healthcare facilities. Air contamination was assessed by active (Surface Air System, SAS) and passive (Index of Microbial Air, IMA) sampling for 8 hours, about 1 m away from the floor and 50 cm from the tap water. Two hundred liters of air were sampled by SAS every 12 min, after flushing water for 2 min. The IMA value was calculated as the mean value of colony forming units/16 plates exposed during sampling (2 plates/hour). Water contamination was evaluated at T0, after 4 and 8 hours, according to the standard methods. RESULTS: Air contamination by Legionella was found in three healthcare facilities (one with active and two with passive sampling), showing a concomitant tap water contamination (median=40,000; range 1,100-43,000 cfu/l). The remaining seven hospitals isolated Legionella spp. exclusively from water samples (median=8,000; range 1,200-70,000 cfu/l). CONCLUSIONS: Our data suggest that environmental Legionella contamination cannot be assessed only through the air sampling, even in the presence of an important water contamination.

An overview of the studies on microbial air contamination in operating theatres and related issues over time: a useful tool for a multidisciplinary approach.

Background and aim Surgical site infection (SSI) is a major complication following surgery associated with increased morbidity and mortality, as well as increased health and not health costs. A variety of factors affect airborne contamination in operating theatres (OT). Following the Medical Research Council study showing a correlation between microbial air contamination and SSI incidence in prosthetic joint surgery ultraclean OTs have been recommended for this type of surgery, while OTs supplied by turbulent airflow plants are recommended for other types of surgery. The aim of this study was to illustrate the studies on this topic. Methods Scopus was considered for articles published until January 2023 on OTs and air contamination in article title or abstract or keywords. Many issues were deepened: "microbial", "bacterial", "fungi", "viruses", "surgical site/wound infection", "monitoring/sampling", "air changes", "behaviour", "door openings", "particles", turbulent flow", "unidirectional flow". Results Total papers published were 907 and 249 papers faced monitoring/sampling. A total of 313 papers investigated airborne bacterial contamination and 63 papers investigated fungal air contamination. There were 218 papers that have evaluated particle contamination in OTs. Many other issues were deepened. Conclusions This study shows a picture of the studies on biological air contamination in OTs and related issues over time. We think that the results of our study will provide a useful tool to increase awareness towards a better sharing of aims, approaches, and results, above all in the interest of the patients, but also of the health services of the different countries. (www.actabiomedica.it).

Air microbial sampling in operating theatres by active and passive methods: equation correlation from the GISIO-ISChIA study results and comparison with the EU GGMP recommendation, towards the definition of threshold values.

The aim of this study was to calculate the equation of correlation between the microbial air contamination values obtained by active sampling (colony-forming units per cubic metre, CFU/m3) and by passive sampling (Index of microbial air contamination, IMA), by using the data from the ISChIA study, and to compare the values obtained with the recommended limits defined by the EU Guidelines to Good Manufacturing Practice (EU GGMP), 2008, for clean areas used to manufacture sterile medicinal products. Air sampling was performed during 335 elective prosthesis procedures. Correlation between CFU/m3 and IMA values was evaluated using the Spearman test; p<0.05 was considered to indicate significance. This equation was used to calculate the IMA values corresponding to the CFU/m3 recommended threshold values by EU GGMP for the different Grades of microbial contamination. The following correlation equation was obtained: y = 1.86 + 0.12x, where "x" = cfu/m3 value and "y" = IMA value. The relationships between CFU/m3 and IMA values obtained from active and passive sampling during the ISChIA study showed to be in line to those suggested by the EU GGMP for pharmaceutical manufacturing for Grade C and D. This study shows that the EU GGMP relationship could be considered valid also for operating theatres. Both methods, active and passive samplings, can be used to evaluate microbial air quality and highlight critical situations; however, in particular during the activity, passive sampling estimating the risk posed by airborne microorganisms to the surgical wound, can be considered more relevant, and for its simplicity, economy and standardization, can be suggested for routine microbial monitoring.