Evidence of a SARS-CoV-2 double Spike mutation D614G/S939F potentially affecting immune response of infected subjects

Objectives

Despite extensive efforts to monitor the diffusion of COVID-19, the actual wave of infection is worldwide characterized by the presence of emerging SARS-CoV-2 variants. The present study aims to describe the presence of yet undiscovered SARS-CoV-2 variants in Italy.

Methods

Next Generation Sequencing was performed on 16 respiratory samples from occasionally employed within the Bangladeshi community present in Ostia and Fiumicino towns. Computational strategy was used to identify all potential epitopes for reference and mutated Spike proteins. A simulation of proteasome activity and the identification of possible cleavage sites along the protein guided to a combined score involving binding affinity, peptide stability and T-cell propensity.

Results

Retrospective sequencing analysis revealed a double Spike D614G/S939F mutation in COVID-19 positive subjects present in Ostia while D614G mutation was evidenced in those based in Fiumicino. Unlike D614G, S939F mutation affects immune response by the slight but significant modulation of T-cell propensity and the selective enrichment of potential binding epitopes for some HLA alleles.

Conclusion

Collectively, our findings mirror further the importance of deep sequencing of SARS-CoV-2 genome as a unique approach to monitor the appearance of specific mutations as for those herein reported for Spike protein. This might have implications on both the type of immune response triggered by the viral infection and the severity of the related illness.

Knowledge, attitudes and behaviors on antibiotic use and resistance among healthcare workers in Italy, 2019: investigation by a clustering method

BACKGROUND

Identifying healthcare workers (HCW) who have less awareness and knowledge on antibiotic use and resistance represents a challenge for public health, since it might help the development of novel educational and training initiatives tailored on specific subgroups of professionals. This work aims to compare knowledge, attitudes and behaviors on antibiotic use and resistance across different groups of Italian HCW.

METHODS

We used data from the multi-country and multi-professional survey launched by the European Centre for Disease Prevention and Control between 28 January to 4 March 2019 to assess knowledge, attitude and behaviors of HCW on antibiotics, antibiotic use and resistance. We distinguished three clusters of HCW using the Two-Step Cluster analysis, based on their personal and professional characteristics (i.e. profession, role, activity as prescriber, setting, and activity as antibiotic use advisor).

RESULTS

In general, cluster 1 consisted mostly of allied healthcare workers, while clusters 2 and 3 were made up almost completely of pharmacists and medical doctors, respectively. Interestingly, healthcare workers in cluster 3 had the highest knowledge on antibiotic use and resistance. Workers in cluster 1, instead, were those reporting the highest awareness of the importance and role of hand hygiene as an infection prevention and control measure. However, HCW in cluster 2 were those who recognized more their role of advisors on prudent antibiotic use.

CONCLUSIONS

Italian HCW exhibited different knowledge, attitudes, and behaviors on antibiotic use and resistance. These findings raised the need for educational and training interventions targeting specific professional groups.

The Clean Care Contest: promoting hand hygiene among healthcare and medical students

INTRODUCTION

Despite continuing efforts, compliance rates and knowledge of best practices in hand hygiene remain disappointing. Recognizing that conventional educational tools seem out of touch with young people and that the med and messages contents need refreshing, the Italian Study Group of Hospital Hygiene of the Italian Society of Hygiene, Preventive Medicine and Public Health devised a novel approach to promote the creation of innovative educational tools for improving knowledge of, and compliance with, hand hygiene rules among healthcare and medical students.

METHODS

A contest in creating educational material on hand hygiene practices involved university students of nursing and medicine, and of other healthcare degrees. Students from the universities of the GISIO network were invited to create educational material (e.g., videos, posters, presentations, leaflets, and screensavers) to be presented by May 5th 2019 during the World Hand Hygiene Day / Save Lives: Clean Your Hands Global Annual Initiative of the World Health Organization). A local and a national winners were awarded.

RESULTS

Three different local and national contests were performed during 2016, 2017 and 2018. During the three-year period, more than 270 educational tools have been developed: 130 (48%) were judged useful for hand hygiene promotion campaigns. The most frequent projects participating in the contests were videos (39%), posters (29%), leaflets (14%), and others (18%) submitted by more than 1,500 students of nursing (40%), medicine (31%), dentistry (7%), and of other healthcare courses in 14 universities. Products were evaluated by a local committee and, subsequently, local winners represented their University in a national contest.

CONCLUSIONS

The contest provided a framework for the creation of innovative and potentially effective educational tools via an engaging approach that leveraged student creativity. Given the need to improve compliance rates, this study suggests that new ways can be advantageously explored to teach hand hygiene procedures and increase awareness of the importance of their consistent use among healthcare and medical students.

Prolonged outbreak of New Delhi metallo-beta-lactamase-producing carbapenem-resistant Enterobacterales (NDM-CRE), Tuscany, Italy, 2018 to 2019

In Tuscany, Italy, New Delhi metallo-beta-lactamase-producing carbapenem-resistant Enterobacterales (NDM-CRE) have increased since November 2018. Between November 2018 and October 2019, 1,645 samples were NDM-CRE-positive: 1,270 (77.2%) cases of intestinal carriage, 129 (7.8%) bloodstream infections and 246 (14.9%) infections/colonisations at other sites. Klebsiella pneumoniae were prevalent (1,495; 90.9%), with ST147/NDM-1 the dominant clone. Delayed outbreak identification and response resulted in sustained NDM-CRE transmission in the North-West area of Tuscany, but successfully contained spread within the region.

The law on compulsory vaccination in Italy: an update 2 years after the introduction

Italy introduced a national law extending the number of compulsory vaccines from four to 10 in July 2017. The implementation placed a further burden on immunisation centres as they were required to cover the increased demand of vaccination by the parents of unvaccinated children. Vaccine coverage (VC) estimated 6 months and 1 year later, at 24 and 30 months (same birth cohort), had increased for all vaccines. At 24 months of age, measles VC increased from 87.3% in 2016 to 91.8% in 2017 and 94.1% at 30 months of age as at June 2018. In six of 21 regions and autonomous provinces, VC for measles was >95%. Despite the implementation of this law, vaccine hesitancy is still a problem in Italy and the political and social debate on mandatory vaccination is ongoing. Regardless of the policy to be adopted in the future, strategies to maintain high vaccination rates and the related herd immunity should be considered, including adequate communication to the population and the implementation of electronic immunisation registries.

Knowledge, attitude and practice on antibiotic use and resistance among the Italian population, 2019

Background

Public knowledge, awareness and behaviors related to antibiotic use and antimicrobial-resistance (AMR) are vital to ensure the prudent use of these drugs. In this work, we present the top-line results of the first national survey of AMR among the Italian general population aged ≥18 years.

Methods

From August to September 2019, we conducted a population-based cross-sectional random survey through mixed CATI/CAMI/CAWI methodologies among representative samples of the general population, parents of children aged 0-11 years, adults ≥65 years and pet's owners. Results were summarized using relative frequencies.

Results

Of 1,400 persons interviewed, 47% and 68% respectively correctly said that it is false that antibiotics kill viruses and are effective at treating colds and flu. More than 80% of respondents considered themselves to be well-informed about antibiotics but only one in two people knew what is meant by AMR. While the vast majority (96%) of respondents said that they obtained the last course of antibiotics that they used from a medical prescription, 11% incorrectly said that they stopped taking antibiotics when they felt better or that they used those left over from a previous course. In addition, 55% of pet's owners said they obtained antibiotics without a prescription from a pharmacy or elsewhere. Almost all respondents (97%) believed that it's everyone's responsibility to use antibiotics wisely, with the 80% who expressed concerns about the potential of AMR to affect themselves and their families; however, 40% did not think that action at an individual level is the most effective way of tackling resistance to antibiotics.

Conclusions

Our findings show some improvement in Italians' knowledge, awareness and behaviors related to antibiotic use and AMR but there are needs to be a greater sense of responsibility to take charge of the AMR problem. These results may be drivers of structured national awareness campaigns.

Key messages

In 2019, we conducted the first national survey of AMR among the Italian population: >80% of respondents felt themselves well-informed about antibiotics but only 1/2 people knew what is meant by AMR. Almost all Italian sample believed that it's everyone's responsibility to use antibiotics wisely, but 40% did not think that action at an individual level is effective to tackle AMR.

MoRoNet a network to strengthen the quality of measles and rubella surveillance in Italy

Background

Measles is a vaccine-preventable infectious disease and it remains one of the leading causes of infant mortality globally. The World Health Organization (WHO) has adopted the goal of eliminating measles and rubella. Detection and control of communicable diseases would not be possible without accurate laboratory results regarding when and where a particular disease circulates.

Methods

WHO/Europe therefore works with all Member States to steadily improve the quality of the laboratory data in order to determine the Region's progress towards measles and rubella elimination. For this purpose coordinates the European Measles and Rubella Laboratory Network (MR LabNet). National labs in this network undergoes regular external quality assessment through an annual accreditation programme.

Results

In Italy, a Sub-national Reference Laboratories Network for measles and rubella (MoRoNET) has been developed since March 2017 and currently includes 15 laboratories. MoRoNet was developed following the indications of the MR LabNet. It is accreditate, coordinated and supervised by the National Reference Laboratory.

Conclusions

Strengthening the role of national laboratories in overseeing the performance of subnational laboratories has become a critical need in order to properly monitor the Region's measles and rubella elimination efforts. MoRoNet permits to Italy to develop a country-specific work plan for establishing national networks and oversight mechanism, including preliminary monitoring and evaluation indicators compliant with MR LabNet standards. This is very significant not only to optimize the participation in national and regional processes to verify disease elimination, but also to strengthen the quality of vaccine-preventable disease surveillance.

MoRoNet Group: A Amendola; F Baldanti; MR Capobianchi; M Chironna; MG Cusi; P D'Agaro; P Lanzafame; T Lazzarotto; K Marinelli; A Orsi; E Pagani; G Palù; F Pittaluga, A Sacchi; F Tramuto.

Key messages

MoRoNet has permitted to Italy to develop a country-specific work plan for establishing national networks and oversight mechanism, compliant with WHO MR LabNet standards. MoRoNet network has permitted to optimize the participation in processes to verify disease elimination, but also to strengthen the quality of vaccine-preventable disease surveillance.

Who is at risk for measles in Italy? Continued measles outbreaks in 2019 and barriers to elimination

Background

Measles is a highly contagious vaccine preventable disease that can lead to serious complications, including death. All five regions of the World Health Organization have set targets to eliminate measles. In Italy, measles vaccination was introduced in 1976, with sustained low uptake in the 1980s and 1990s. Uptake improved in subsequent years but never reached 95% coverage required for elimination. Two doses of measles-mumps-rubella (MMR) vaccine are recommended (at 12-15 months and 5-6 years respectively). Since July 2017, MMR vaccine has become mandatory for all children up to 16 years of age. Large outbreaks continue to occur, with over 8.000 cases reported in 2017-2018.

Methods

We analysed measles cases reported to the national integrated measles and rubella surveillance system during January 1 - December 31, 2019.

Results

From 1 January to 31 December 2019, 1,627 cases (87% laboratory-confirmed), were reported from all 21 administrative regions. National incidence was 27 cases/million. Overall, 86% of cases were unvaccinated. Median age was 30 years but the highest incidence was in infants below one year of age. Ninety-six cases were reported amongst healthcare workers and transmission in the healthcare setting was frequent. Overall, 31% of cases reported complications, including three cases of encephalitis (in two adults and one child) and one death in an adult patient. Complications were more frequent in cases ≥20 years of age compared to younger patients. Forty-six percent of cases were hospitalised.

Conclusions

The median age of cases has increased further in 2019 compared to 2017 (27 years) and 2018 (28 years). The proportions of complicated and hospitalised cases are high, this may be due to the high median age of cases but also to underreporting from general practitioners who are likely to see milder cases. Wide immunity gaps among adults (including healthcare workers) and nosocomial transmission are major challenges to measles elimination in Italy.

Key messages

Measles is still endemic in Italy and large outbreaks continue to occur, with a significant public health impact. Wide immunity gaps among adults (including healthcare workers) and nosocomial transmission are major challenges to measles elimination in Italy.

Bloodstream infections due to carbapenemase-producing Enterobacteriaceae in Italy: results from nationwide surveillance, 2014 to 2017

Following the rapid increase of infections due to carbapenemase-producing Enterobacteriaceae (CPE) in Italy, the national surveillance of bloodstream infections (BSI) due to CPE (Klebsiella pneumoniae and Escherichia coli) was instituted in 2013. All CPE-BSI cases reported to the surveillance in the years 2014-17 were analysed in order to investigate incidence rate (IR), trend, main individual characteristics and enzymes involved in CPE resistance. Throughout this period, 7,632 CPE-BSI cases (IR: 3.14/100,000 inhabitants) were reported from all 21 regions and autonomous provinces in Italy, with an increasing number of reported cases (2014: 1,403; 2015: 1,838; 2016: 2,183; 2017: 2,208). CPE-BSI cases mainly occurred in subjects aged over 60 years (70.9%) and more frequently in males (62.7%) than in females. Most of the cases originated in hospitals (87.2%), mainly in intensive care units (38.0%), and were associated with central or peripheral venous catheter use (23.9%) or with urinary tract infections (21.1%). Almost all CPE-BSI (98.1%) were due to K. pneumoniae carrying the K. pneumoniae carbapenemase (KPC) enzyme (95.2%). These data show that carbapenemase-producing K. pneumoniae are endemic in our country, causing a high number of BSI and representing a threat to patient safety.

A proposal for a comprehensive approach to infections across the surgical pathway

Despite evidence supporting the effectiveness of best practices in infection prevention and management, many healthcare workers fail to implement them and evidence-based practices tend to be underused in routine practice. Prevention and management of infections across the surgical pathway should always focus on collaboration among all healthcare workers sharing knowledge of best practices. To clarify key issues in the prevention and management of infections across the surgical pathway, a multidisciplinary task force of experts convened in Ancona, Italy, on May 31, 2019, for a national meeting. This document represents the executive summary of the final statements approved by the expert panel.

[Good practices for the surveillance and control of antimicrobial resistance]

Italy is one of the European Countries with the highest level of antimicrobial consumption, both in the community and in hospital settings, and with the highest prevalence of antimicrobial resistant microorganisms. In 2015, the Project "Good practices for the surveillance and control of antimicrobial resistance" was funded by the Italian National Centre for Disease Prevention and Control (CCM): the aim was to promote integrated actions at national level to control antimicrobial resistance, favouring the transfer of existing good practices. The principal objectives of the project were: to describe the Italian scenario of good practices based on literature review; to improve the capacity of surveillance, through achieving consensus on a core set of indicators, including paediatrics, and through the strengthening of the national surveillance system of antimicrobial resistance coordinated by the Italian National Institute of Health; to define tools useful for priority setting; to evaluate the efficacy of intervention programme aimed at promoting the appropriate use of antibiotics among children for upper respiratory tract infections in the community; to set up training programmes on the prudent use of antibiotics in veterinary medicine. Seven regions were enrolled in the project (Emilia-Romagna with the role of programme coordinator, Campania, Calabria, Lazio, Lombardy, Piedmont, Tuscany) and the Italian National Health Institute. The project allowed to document: the scarce spread of control practices at national level (out of 277 studies reviewed, only 6.1% of the cases were targeted to evaluating the effectiveness of intervention programmes); a significant variability among regions both in relation to antimicrobial consumption and antimicrobial resistance prevalence, with a worrying spread in some regions of several antimicrobial resistant organisms responsible for "critical" infections with great potential health impact; the effectiveness of an intervention aimed at promoting appropriate use of antibiotics in frequent infections for children in the community, such as pharingotonsillitis and acute otitis media (35% reduction of antimicrobial consumption between 2010 and 2017 in Emilia-Romagna; an inversion of the ratio amoxicillin/amoxicillin-clavulanate); the need for new indicators to monitor antimicrobial consumption in hospital paediatric wards and of a new national system for timely identification of new antimicrobial resistance profiles; a positive evaluation of the training programme for veterinary physicians. In conclusion, the project has contributed to identify the most critical areas for antimicrobial resistance control and to select appropriate solutions, potentially transferable to the national level.

[ESCULAPIO: A project to elaborate strategies and actions of multi-purpose health communication on vaccine preventable infectious diseases in order to increase vaccination coverage in the population]

ESCULAPIO Project, funded by the Centre for Disease Prevention and Control (CCM) of the Italian Ministry of Health, for the program 2013, aims at increasing awareness on vaccine preventable infectious diseases (VPID) and vaccination in different targets of population and at spreading the culture of prevention by the development of information/training interventions on VPID. In Tuscany Region (Central Italy), educational courses on VPID in high schools were organized and students were stimulated to prepare informative materials on VPID for lower grade school pupils. Educational games for school pupils were realized in Liguria Region (Northern Italy) with the aim to increase awareness and knowledge of vaccination among primary school children, their families, and teachers. The Sicilian Operative Unit (OU) developed and validated a questionnaire to collect data on the main factors influencing vaccine uptake in a population from Southern Italy and spreading information on vaccines to the general population. Aim of the activities performed in Apulia Region (Southern Italy) was to collect, directly from the public, a set of issues to which people were more "sensitive," in order to perceive the dimension of informative needs and the misinformation in the field of vaccinations. A toll-free telephone line to answer questions on VPID was also the aim of the Apulian activities. The objective of the OU of Sardinia (Southern Italy) was to increase knowledge on VPID and adherence to immunization campaigns in health care workers (HCW) by realizing traditional and e-learning training courses and initiatives of health promotion in healthcare and hospital setting. Interventions to promote vaccinations in maternal and child health services and outreach interventions in case of parental non-compliance with vaccination schedules were performed in the Veneto Region (Northern Italy), with the aim to reach a particular subgroup of the general population: new or future parents. The activities of Veneto Region aimed also at realizing individual interviews with parents and/or home visit, if considered useful, for families not respondents to the active ordinary call.

Towards elimination of measles and rubella in Italy: Progress and challenges

INTRODUCTION

In the WHO European Region, endemic transmission of measles and rubella had been interrupted by 37 and 42 of the 53 member states (MSs), respectively, by 2018. Sixteen MSs are still endemic for measles, 11 for rubella and nine for both diseases, the latter including Italy. Elimination is documented by each country's National Verification Committee (NVC) through an annual status update (ASU).

OBJECTIVE

By analysing data used to produce the ASUs, we aimed to describe the advances made by Italy towards elimination of measles and rubella. Moreover, we propose a set of major interventions that could facilitate the elimination process.

METHODS

A total of 28 indicators were identified within the six core sections of the ASU form and these were evaluated for the period 2013-2018. These indicators relate to the incidence of measles/rubella; epidemiological investigation of cases; investigation of outbreaks; performance of the surveillance system; population immunity levels; and implementation of supplemental immunization activities (SIAs).

RESULTS

From 2013 to 2018, epidemiological and laboratory analyses of measles cases in Italy improved substantially, allowing timely investigation in 2017 and 2018 of most outbreak and sporadic cases and identification of the majority of genotypic variants. Moreover, since 2017, vaccination coverage has increased significantly. Despite these improvements, several areas of concern emerged, prompting the following recommendations: i) improve outbreak monitoring; ii) strengthen the MoRoNet network; iii) increase the number of SIAs; iv) reinforce vaccination services; v) maintain regional monitoring; vi) design effective communication strategies; vii) foster the role of general practitioners and family paediatricians.

CONCLUSIONS

The review of national ASUs is a crucial step to provide the NVC with useful insights into the elimination process and to guide the development of targeted interventions. Against this background, the seven recommendations proposed by the NVC have been shared with the Italian Ministry of Health and the Technical Advisory Group on measles and rubella elimination and have been incorporated into the new Italian Elimination Plan 2019-2023 as a technical aid to facilitate the achievement of disease elimination goals.

Immunisation Registries at regional level in Italy and the roadmap for a future Italian National Registry

BACKGROUND

Immunization Information Systems, or Immunisation registries (IRs), are essential to monitor and evaluate the accessibility, quality and outcomes of immunisation programmes both at local and national level.

STUDY DESIGN

We conducted a cross-sectional survey in order to investigate and map the level of IRs implementation obtained by the 21 Italian Regional Health Authorities. On this basis we defined a roadmap towards implementing an Italian National IR.

METHODS

We designed an online questionnaire. Data were collected from July to September 2016 from all the 21 Regional Health Authorities in charge of infectious diseases control and immunization management.

RESULTS

18/21 Italian Regions have fully implemented an IR, out of them, 11 use the same software for all Local Health Units. Two Regions have partially implemented their IRs and one Region is not yet computerised.

CONCLUSION

The decentralization of the Italian Health System is reflected also on the IRs characteristics and functionalities in terms of fragmented implementation of IRs and diversity in the software systems and data flows in place. Future efforts should not only aim not only to clarify the functionalities of Regional IRs, but should also aim to define how aggregation of data at national level can be optimised.

[Protocol proposal for the management of tuberculosis cases for healthcare Local Authority]

TB is still a major public health problem and a threat to global health security. In Italy, TB control is consistent with the WHO global strategy, in which the role of prevention and, within it, contacts tracing and their management are emphasized. In this work, a protocol for the correct and homogeneous management of TB cases, at local level, is described in all its phases, from reporting to contacts management. The containment of the diffusion of the infection and the prevention of new outbreaks depend on the immediate identification of the index case and the proper performance of the epidemiological investigation. For this reason, the translation of scientific evidence into Recommendations and Guidelines is essential, and of these into operational protocols for the local level, with a clear indication of actions and responsibilities.

Childhood vaccine coverage in Italy after the new law on mandatory immunization

BACKGROUND

The Italian National Immunization Prevention Plan (PNPV) identifies vaccines actively offered free of charge to target populations within the National Health Service. Despite this, childhood immunization coverage has been declining in Italy in recent years. As a response, the Italian Parliament in July 2017 approved law n. 119 extending mandatory childhood vaccines from four to ten, this stimulating a lively debate at both the scientific and policy level.

METHODS

We analysed and critically interpreted 2000-2017 Italian national childhood immunization coverage trends, by different vaccine, target population, birth cohort and by Region. In particular, in order to preliminarily assess the impact of the new law, we computed percentage changes in 2016-2017 vaccine coverage for both mandatory and recommended vaccine programs. Data were provided by the Directorate General of Health Prevention of the Italian Ministry of Health.

RESULTS

In 2017 national-level vaccine coverage at 24 months of age was 94.5% for Polio and 91.7% for Measles, this representing, respectively 1.2% and 4.4% increase, as compared to 2016. Conjugate Pneumococcal and Meningococcal C vaccines coverage increased, respectively, by +2.5% and +2.4% between 2016 and 2017. National-level polio vaccine coverage remained above the 95% PNPV coverage target between 2000 and 2013 and has remained below since then. In particular, it has had been steadily declining between 2011 and 2016 (-2.8%). Measles coverage remained well below the 95% coverage target for the entire study period. In recent times, it declined by 4.8% between 2011 and 2015 with the lowest coverage rate reported for year 2015 (85.3%). There is high heterogeneity in coverage within Regions for both mandatory and recommended vaccines.

CONCLUSION

Preliminary data show that childhood immunization coverage increased since the approval of the new law on mandatory vaccination. Nonetheless, as additional data are accumulating and will make it possible to further assess the impact of the new law, strengthened efforts are needed in Italy to promote informed and proactive vaccine uptake.

Interconnected clusters of invasive meningococcal disease due to Neisseria meningitidis serogroup C ST-11 (cc11), involving bisexuals and men who have sex with men, with discos and gay-venues hotspots of transmission, Tuscany, Italy, 2015 to 2016

In 2015 an increased incidence of invasive meningococcal disease due to serogroup-C (MenC) occurred in Tuscany, Italy. This led the Regional Health Authority of Tuscany to implement a reactive immunisation campaign and to launch an epidemiological field investigation aiming to address targeted immunisation interventions. In 2011–14, 10 MenC cases had been reported compared with 62 cases in 2015–16. The case fatality rate was 21% (n = 13) and 51 cases (82.3%) were confirmed as C:P1.5–1,10–8:F3–6:ST-11(cc11). Overall, 17 clusters were recognised. Six discos and four gay-venues were found to have a role as transmission-hotspots, having been attended by 20 and 14 cases in the 10 days before symptoms onset. Ten and three cases occurred, respectively, among men who have sex with men (MSM) and bisexual individuals, who were involved in 11 clusters. In addition, heterosexual cases (n = 5) attending gay-venues were also found. Secondary cases were not identified. Molecular typing indicated close relationship with MenC clusters recently described among gay, bisexual and other MSM in Europe and the United States, suggesting a possible international spread of the serogroup-C-variant P1.5–1,10–8:F3–6:ST-11(cc11) in this population-group; however, epidemiological links were not identified. In December 2016, a targeted vaccination campaign involving discos and lesbian, gay, bisexual, and transgender (LGBT) associations was implemented. During 2017, 10 cases of MenC occurred, compared with 32 and 30 cases reported in 2015 and 2016 respectively, suggesting the effectiveness of the reactive and targeted immunisation programmes.

Introduction of new and reinforcement of existing compulsory vaccinations in Italy: first evaluation of the impact on vaccination coverage in 2017

In June 2017, a decree-law to increase the number of mandatory vaccinations from 4 to 10 for minors up to 16-years-old was issued in Italy. The vaccination coverage for 2017 showed a positive impact for all the vaccines, particularly for the measles, mumps and rubella vaccine at 91.6% for the year 2017, showing a 4.4% increase compared with 2016 (87.2%). Continued monitoring is needed to evaluate the medium to long-term effects of the law.

Polio and measles: reasons of missed vaccination in Italy, 2015-2017

BACKGROUND

Also in Italy, a flourishing evidence confirms the recent spread of vaccine hesitancy movements resulting in approximately 4-7% of the paediatric population not immunised every year against polio and approximately 9-15% against measles in the last few years. The aim of this paper is to describe the reasons of polio and measles missed vaccination in Italy, in the period 2015-2017, and to analyse any potential effect of the 2017 mandatory vaccination law.

METHODS

Number of missed vaccinations in children younger than 24 months, stratified by reason, were collected separately for measles and polio with a regional level of detail. Data were collected using an electronic form developed using Microsoft Excel®.

RESULTS

The most frequent reason for missed polio vaccination was "definitive informed dissent" with a mean value 1.5%, followed by "found/contacted, but did not attend the appointment" with a mean value 1.3%. Inversely, "acquired immunity subsequent to previous disease or vaccination performed elsewhere" and "excused in a permanent way for health conditions" were the less frequent with a mean value 0.03% for both. For measles vaccination the reason "found/contacted, but did not attend the appointment" was the most frequent (mean value 3.2%), followed by "definitive informed dissent" (mean value 2.9%).

CONCLUSIONS

Percentage of missed vaccination showed a remarkable reduction in 2017. This decrease is likely due to the introduction of mandatory vaccination law. In point of fact, "Dissent" decreased for both polio and measles during the study period. While, "Delay" increased during the 3-years. It seems that hesitant parents prefer to postpone vaccinations instead of refusing them. Counselling, parents' empowerment and vaccine education are central to contrast vaccination postponing. Thus, for parents who refuse vaccines ("Dissent"), monitoring the trend is important as well as trying to understand their reasons.

Regional reports for the subnational monitoring of measles elimination in Italy and the identification of local barriers to the attainment of the elimination goal

Although most countries in the WHO European Region were verified in 2017 as having interrupted endemic measles transmission, nine countries were still endemic. Among these, Italy accounted for the second highest number of measles cases reported in Europe in 2017. The elimination of measles is verified at national level by each country's National Verification Committee (NVC) through the production of an Annual Status Update (ASU). Since in Italy decentralization has led to an inhomogeneous implementation of immunization strategies among the 21 administrative Regions, the Italian NVC proposed that measles elimination should also be documented at the subnational level through regional ASUs and Synthetic Regional Reports (SRRs). The regional ASUs and the SRRs for 2014, 2015 and 2016 were produced and appraised by the NVC to evaluate the Regions' performances in each individual year as well as over the whole period. A specific analysis of vaccination coverage, including official immunization data for 2017, was performed. Moreover, the measles epidemic of 2017 was examined. Firstly, in the period 2014-2016, low immunization rates were registered in most Regions. Sixty-three per cent of southern Regions reported rates below the national mean and an overall low-quality performance. The approval of Italy's mandatory vaccination law in 2017 resulted in a marked increase in vaccination coverage; however, this increase was not homogeneous among Regions. Secondly, more than 50% of Regions did not report any supplemental immunization activity (SIA) for the period 2014-2016. Thirdly, from 2014 to 2016, fewer than one-third of Regions improved their reporting of outbreaks. Finally, over the study period, only two Regions reached the target required by the WHO for measles laboratory investigations. In countries with decentralized health policies, subnational monitoring can help identify local barriers to measles elimination. In Italy it has highlighted the need for further SIAs and a stronger surveillance system.

An outbreak of severe invasive meningococcal disease due to a capsular switched Neisseria meningitidis hypervirulent strain B:cc11

OBJECTIVES

The aim was to investigate an outbreak of invasive meningococcal disease (IMD) in Southern Sardinia.

METHODS

Epidemiological and microbiological investigations were performed. The latter included antimicrobial susceptibility testing and whole-genome sequencing (WGS).

RESULTS

Seven individuals with severe IMD were found to be infected with serogroup B (MenB) Neisseria meningitidis in the first quarter of 2018. Five of the seven cases (five males; mean age 19 years; range 18-21 years; CFR 40%) were due to a unique strain B:P1.5-1,10-8:F3-6:ST-11(cc11), probably switched from the hypervirulent C-cc11, as confirmed by WGS. All five patients had attended the same nightclub in the 2 weeks prior to symptom onset. Public health measures, including chemoprophylaxis of contacts and active immunization against MenB, were implemented.

CONCLUSIONS

We observed five IMD cases due to the same switched MenB strain. The hypervirulent B:P1.5-1,10-8:F3-6:ST-11(cc11) strain, probably switched from C-cc11, is of concern due to the observed high virulence and case fatality rates. All the patients shared the same place of probable exposure. The molecular characterization of the invasive strain allowed the outbreak to be confirmed, which was then controlled through timely public health action.

Infant immunization coverage in Italy (2000-2016)

BACKGROUND

In Italy, national-level immunization polices are included in the National Immunization Prevention Plan (PNPV), whose latest edition - 2017-2019 PNPV - was finally approved in February 2017. Coverage rates are a key measure of immunization system performance; it can inform and support national and regional polices' implementation monitoring, as well as measure the impact of interventions aimed at increasing vaccine uptake.

METHODS

We collected, analysed and critically interpreted 2000-2016 Italian national infant immunization coverage trends, by different vaccine, target population, and by Region. Data were provided by the Directorate General for Prevention of the Italian Ministry of Health.

RESULTS

In 2016, none of the mandatory or recommended vaccines reached the 95% national coverage target set in the PNPV. Weighted average national coverage for currently mandatory vaccines (against Polio, Tetanus, Diphtheria, Hepatitis B) and other antigens included in the hexavalent vaccine (Pertussis, and Haemophilus influenzae type b) ranged between 93.0% for Hepatitis B and 93.7% for Tetanus; it was lower for Measles, Mumps and Rubella vaccines (87.2%), pneumococcal (88.4%) and meningococcal C conjugate vaccines (80.7%), with a high degree of heterogeneity by Region. Both hexavalent and MMR vaccines coverage rates have been decreasing in the last years, respectively from 2012 (-2.8%) and from 2010 (-3.6%).

DISCUSSION

Further efforts are needed to increase vaccine uptake in Italy, to improve data collection and reporting, as well as to fight the growing phenomenon of the vaccine hesitancy so that PNPV's objectives and targets can be met in the near future.

The GISA call to action for the appropriate use of antimicrobials and the control of antimicrobial resistance in Italy

The spread of antibiotic resistance is one of the leading public health problems in Italy. A European Centre for Disease Prevention and Control country visit recently confirmed the major challenges and made important suggestions. In response, the Ministry of Health published the National Plan for Antimicrobial Resistance Containment, and a group of experts belonging to the Italian Group of Antimicrobial Stewardship (GISA) convened to develop a summary of practical recommendations. The GISA document is intended for use by practising physicians; it aims to increase the rational use of antimicrobials in the treatment of infections, and to change the culture of infection control of antibiotic-resistant bacteria, through the translation of theoretical knowledge into priority actions. This document has been endorsed by several national scientific societies, and reflects the particular challenges that are faced in Italy. Nevertheless, it is considered that the general principles and approaches discussed are relevant, particularly to other developed economies.

Using Routine Data Sources to Feed an Immunization Information System for High-Risk Patients-A Pilot Study

Background

Vaccine-preventable diseases among high-risk patients are a public health priority in high-income countries. Most national immunization programs have included vaccination recommendations for these population groups but they remain hard-to-reach and coverage data are poorly available. In a pilot study, we developed and tested an automated approach for identifying individuals with underlying medical conditions to feed an immunization information system (IIS).

Methods

We reviewed published recommendations on medical conditions that indicate vaccination against influenza, pneumococcal disease, meningococcal disease, hepatitis A, and hepatitis B. For each medical condition, we identified the International Classification of Diseases, Ninth Revision, Clinical Modification diagnosis and procedure codes, the user fee exempt codes and the Anatomical Therapeutic Chemical Classification System codes and we reported these data in correspondence tables. Using these tables, we extracted three lists of patients recorded in three current data sources between 2001 and 2010 in the Apulia region of Italy: the hospital discharge registry, the user fee exempt registry, and the drug prescription registry. Using a unique personal identification number, we linked these three lists of patients with the regional IIS (2012 database), obtaining a list of patients with chronic diseases eligible for vaccination. We tested completeness, sensitivity, and positive predictive value (PPV) of this approach by asking a sample of 28 general practitioners (GPs) to evaluate the matching between a sublist of patients with clinical recommendations for influenza vaccination and the GPs individual subjects medical records.

Results

We included a total of 1,204,496 subjects with underlying medical conditions eligible to receive any of the aforementioned vaccinations. Of these, 9% were identified in all three data sources, 18% in two sources, and 73% in one source. The completeness of this automated process in identifying GPs high-risk patients eligible for influenza vaccination was 88.9% [95% confidence intervals (95% CI): 88.1–89.8%], with a sensitivity of 69.2% (95% CI: 67.7–70.6%) and a PPV of 85.7% (95% CI: 84.4–86.8%).

Conclusion

The high completeness of the methodology used for identifying high-risk patients in current data sources encouraged us to apply this approach for feeding the regional IIS.