The effect of diabetes on COVID-19 incidence and mortality: Differences between highly-developed-country and high-migratory-pressure-country populations.

The objective of this study was to compare the effect of diabetes and pathologies potentially related to diabetes on the risk of infection and death from COVID-19 among people from Highly-Developed-Country (HDC), including Italians, and immigrants from the High-Migratory-Pressure-Countries (HMPC). Among the population with diabetes, whose prevalence is known to be higher among immigrants, we compared the effect of body mass index among HDC and HMPC populations. A population-based cohort study was conducted, using population registries and routinely collected surveillance data. The population was stratified into HDC and HMPC, according to the place of birth; moreover, a focus was set on the South Asiatic population. Analyses restricted to the population with type-2 diabetes were performed. We reported incidence (IRR) and mortality rate ratios (MRR) and hazard ratios (HR) with 95% confidence interval (CI) to estimate the effect of diabetes on SARS-CoV-2 infection and COVID-19 mortality. Overall, IRR of infection and MRR from COVID-19 comparing HMPC with HDC group were 0.84 (95% CI 0.82-0.87) and 0.67 (95% CI 0.46-0.99), respectively. The effect of diabetes on the risk of infection and death from COVID-19 was slightly higher in the HMPC population than in the HDC population (HRs for infection: 1.37 95% CI 1.22-1.53 vs. 1.20 95% CI 1.14-1.25; HRs for mortality: 3.96 95% CI 1.82-8.60 vs. 1.71 95% CI 1.50-1.95, respectively). No substantial difference in the strength of the association was observed between obesity or other comorbidities and SARS-CoV-2 infection. Similarly for COVID-19 mortality, HRs for obesity (HRs: 18.92 95% CI 4.48-79.87 vs. 3.91 95% CI 2.69-5.69) were larger in HMPC than in the HDC population, but differences could be due to chance. Among the population with diabetes, the HMPC group showed similar incidence (IRR: 0.99 95% CI: 0.88-1.12) and mortality (MRR: 0.89 95% CI: 0.49-1.61) to that of HDC individuals. The effect of obesity on incidence was similar in both HDC and HMPC populations (HRs: 1.73 95% CI 1.41-2.11 among HDC vs. 1.41 95% CI 0.63-3.17 among HMPC), although the estimates were very imprecise. Despite a higher prevalence of diabetes and a stronger effect of diabetes on COVID-19 mortality in HMPC than in the HDC population, our cohort did not show an overall excess risk of COVID-19 mortality in immigrants.

Access to SARS-CoV-2 diagnostic tests: are there barriers for the immigrants in Italy?

OBJECTIVES: to describe the epidemiology of SARS-CoV-2 infection in relation with the use of nasal swabs in the immigrant population in Italy, using data from the COVID-19 national surveillance system and to verify if a difference is present comparing natives and immigrant. DESIGN: descriptive study based on longitudinal health-administrative data. SETTING AND PARTICIPANTS: general population of six Italian Regions (Piedmont, Lombardy, Veneto, Emilia-Romagna, Tuscany, Lazio) covering about 55% of the resident population and 72% of foreigners' population. MAIN OUTCOME MEASURES: regional rates of access to at least a nasal swab, separately by country of origin. RESULTS: across all the periods, a lower rate in the foreigners' group was observed, with the only exception of the period May-June 2021. Considering separately High Migratory Pressure Countries (HMPCs) and Highly Developed Countries (HDCs), a higher proportion of nasal swabs performed in people coming from HDC with respect to HMPCs and natives was noticed. This observation is consistent in males and females. CONCLUSIONS: during the first wave of the pandemic, Italians have had a higher proportion of nasal swabs compared to migrants across all Regions. This difference disappeared in the following periods, probably due to a major availability of diagnostic tests.

[SARS-CoV-2 epidemic among Italians e resident immigrant population: differential incidence from an interregional multicentre study]. / L'epidemia di SARS-CoV-2 nella popolazione italiana e straniera: differenze di incidenza che emergono da uno studio multicentrico interregionale.

OBJECTIVES: to describe differences in the incidence of SARS-CoV-2 infections between Italians and foreigners residing in seven Italian Regions during the different phases of the pandemic and by gender. DESIGN: retrospective observational study. SETTING AND PARTICIPANTS: all confirmed SARS-CoV-2 infections from 02.02. 2020 to 16.07.2021 in the seven Regions under study were included. Italian resident population calculated by the National Institute of Statistics as of 01.01.2020 was used to calculate the rates. The considered period is divided into 5 sub-periods (phases). MAIN OUTCOME MEASURES: number of confirmed SARS-CoV-2 infections in the five phases of the pandemic and crude rates by citizenship (Italian vs foreign). Distribution of infections by age group and by week. Crude and age-adjusted incidence rates ratios (IRR) were calculated, by Region, gender, and phase of the pandemic. RESULTS: an epidemic curve delay was observed in foreigners in the first phase of the epidemic, in particular in the northern Regions, the most affected in that phase. The first phase of the epidemic was characterized by a greater proportion of cases occurred in people aged over 60 years than the other phases, both in Italians and in foreigners. The incidence among foreigners is higher during the summer of 2020 (intermediate period: June-September 2020) and during the last period (May-July 2021) in all Regions. The overall figure shows a lower incidence among foreigners than Italians, except for males in Tuscany. CONCLUSIONS: the lower incidence rates among foreigners should be interpreted with caution as the available data suggest that it is at least partly attributable to less access to diagnostic tests. Regional differences found in the study deserve further research together with the effect of gender and country of origin.

[Hospital assistance for COVID-19: a comparison between non-Italian and Italian resident population in five Italian Regions since the beginning of the pandemic until June 2021]. / Un confronto tra italiani e stranieri residenti nell'assistenza ospedaliera per COVID-19 in cinque Regioni italiane da inizio pandemia a giugno 2021.

OBJECTIVES: to describe trends of overall and intensive care hospitalization for COVID-19 since the beginning of the pandemic in Italy until June 2021, and to compare the results between foreign and Italian population. DESIGN: retrospective observational study. SETTING AND PARTICIPANTS: hospital discharges of 28 million people living in Lombardy, Piedmont, Emilia-Romagna (Northern Italy), Toscana and Lazio (Central Italy) occurred between 22.02.2020 and 02.07.2021 in the hospitals located in each considered Region. MAIN OUTCOME MEASURES: two weekly outcomes were examined: 1. the overall number of COVID-19 hospitalizations; 2. the number of COVID-19 hospitalizations in intensive care units. RESULTS: a higher COVID-19 overall and intensive care unit hospitalization was found among the foreign population compared to Italians. The association emerged only after the adjustment for age, and it was consistent among all Regions, though less marked in Lombardy. The association varied across epidemic phases. CONCLUSIONS: the issue of vulnerability of migrants to the risk of severe COVID-19 calls for a diversity-sensitive approach in prevention. The specific country of origin and the prevalence of preventable co-morbidities that are often underestimated in the migrant populations, and related to COVID-19 complications, should be taken into consideration in future analyses.

[Mortality and impact of COVID-19 by citizenship in seven Italian Regions from the beginning of the pandemic to mid-July 2021]. / Mortalità per COVID-19 nella popolazione immigrata in sette Regioni italiane da inizio pandemia a metà luglio 2021.

OBJECTIVES: to quantify the variability of COVID-19 mortality from the beginning of the pandemic to mid-July 2021, in relation to the immigrant status and by Region and period. DESIGN: observational incidence study. SETTING AND PARTICIPANTS: the study population consists of the residents at the beginning of 2020 in seven Regions (Piedmont, Lombardy, Veneto, Emilia-Romagna, Tuscany, Lazio, Sicily) aged <=74 years. MAIN OUTCOME MEASURES: absolute frequency of deaths occurred in subjects who tested positive for SARS-CoV-2, crude and standardized rates (standard: Italian population at the beginning of 2020), and mortality rates ratios (obtained using Poisson models), by immigrant status and stratified by gender, Region of residence, and period. The study period was divided into 5 subperiods: 22.02.2020-25.05.2020, 26.05.2020-02.10.2020, 03.10.2020-26.02.2021, 27.02.2021-16.07.2021. RESULTS: the study includes more than one half of the Italian population and most of the immigrants residing in the country, who are younger than Italians and experienced fewer COVID-19 deaths. Deaths among those who tested positive varied greatly between Regions and periods; standardized rates showed considerable increases over time among immigrants. In terms of rate ratios, there were excesses among immigrant males in the third period (MRR: 1.46; 95%CI 1.30-1.65) and in the fourth period (MRR: 1.55; 95%CI 1, 34-1.81). Among immigrant females, there is an indication of lower risk in the third period (MRR: 0.79; 95%CI 0.65-0.97) and of greater risk in the fourth period (MRR: 1. 46; 95%CI 1.21-1.77). Finally, the effect is modified by the Region of residence, both in the third and in the fourth period for males and only in the fourth period for females. CONCLUSIONS: the risk of premature mortality due to COVID-19 is linked to immigrant status and with an intensity that varies by gender, Region, and period. More accessible tools for prevention, diagnosis and early healthcare can support immigrant communities in managing the risk factors linked to the spread of infections and, in particular, counteract their evolution into more severe disease outcomes.

[The impact of the COVID-19 pandemic on the Italian and foreign population in the various phases: the results of an interregional multicentre project]. / L'impatto della pandemia di COVID-19 nella popolazione italiana e straniera residente nelle diverse fasi: i risultati di un progetto multicentrico inter-regionale.

OBJECTIVES: to analyze the difference of the SARS-CoV-2 infection impact between Italian and foreigner subjects, evaluating the trend of infections and access to diagnostic tests (molecular or antigenic swabs for the detection of SARS- CoV-2) in the two different populations, inducing the detection of new positive cases in the population. DESIGN: retrospective population study for the period February 2020-June 2021. SETTING AND PARTICIPANTS: Italian and foreign resident population on 1st January of the years 2020 and 2021 in the Regions participating to the project: Piedmont, Lombardy, Veneto, Emilia-Romagna (Northern Italy), Tuscany, Lazio (Central Italy), and Sicily (Southern Italy). MAIN OUTCOME MEASURES: in the two populations, for every week and aggregated by macropandemic period were calculated: • the test rate (people tested on the population); • the swab positivity rate (positive subjects on those who are tested); • the new positives (positive subjects on study population); • the percentage of foreigners among the new positive cases. The ratio of the value of the indicators in the foreign and Italian populations (with 95% confidence interval) was calculated to evaluate the association between nationality (Italian vs not Italian) and outcome. The analyses were conducted at the regional level and at pool level. RESULTS: the trend of new positives by nationality (Italian vs not Italian) has a similar tendency in the different pandemic waves. However, the incidence of new positives during pandemic waves among foreigners is lower than in Italians, while it tends to increase during intermediate periods. Except for the summer periods, foreigners are less tested than Italians, but the percentage of new positives out of the total of new ones tested is higher among foreigners compared to Italians. The relative weight of new positives among foreigners tends to increase in periods with the greatest risk of inflow of SARS-CoV-2 for foreigners. CONCLUSIONS: the epidemic trends in the two populations are similar, although foreigners tend to show lower incidence values, probably in part because they are tested less frequently. Furthermore, in foreigners compared to Italians, there is a greater risk of contracting SARS-CoV-2 infection, especially in periods of relaxation of containment Coronavirus measures, reopening of national borders, production and commercial activities.

[Impact of COVID-19 on the immigrant population in the Veneto Region (Northern Italy), by geographical area of origin]. / Impatto del COVID-19 nella popolazione immigrata in Veneto, per area geografica di provenienza.

OBJECTIVES: to examine the differences in SARS-CoV-2 infection and hospitalization rates among migrant populations in Veneto Region (Northern Italy), according to the geographic area of origin. SETTING AND PARTICIPANTS: all residents in Veneto Region aged <65 years were included in the analyses. All subjects infected by SARS-CoV-2 and hospitalized for COVID-19 were identified by means of the regional biosurveillance system. MAIN OUTCOME MEASURES: age- and gender-specific infection and hospitalization rates were stratified by geographic area of origin and were estimated using the number of incident cases over the resident population in Veneto on 01.01.2021. Incidence rate ratios (IRR) for infection and hospitalization rates were estimated using a Poisson model, adjusted for age and gender, among migrants compared to Italians. RESULTS: compared to Italians, SARS-CoV-2 infection rates were significantly higher among migrants from Central and South America and Central and South Asia, lower among those from North Africa and High-Income Countries (HIC), and were approximately halved for those coming from Other Asian Countries (mainly represented by China). Hospitalization rates were significantly higher for all migrant populations when compared to Italians, with the exception of those coming from HIC. Neither age nor gender seemed to modify the association of the geographic area of origin with SARS-CoV-2 infection and hospitalization rates. IRR for SARS-CoV-2 infection of migrants compared to Italians showed how migrants from Other Asian Countries had the lowest infection rates (-53%), followed by people from HIC (-25%), North Africa (-21%), and Eastern Europe (-10%). Higher infection rates were present for Central and South America and Central and South Asia (+17% and +10, respectively). Hospitalization rates were especially high among migrants from Central and South Asia, Africa, and Central and South America, ranging from 1.84 to 3.14 times those observed for Italians. CONCLUSIONS: a significant heterogeneity in SARS-CoV-2 infection and hospitalization rates of migrant populations from different geographic areas of origin were observed. The significantly lower incidence rate ratio for infections, compared to that observed for hospitalizations, is suggestive of a possible under-diagnosis of SARS-CoV-2 infection among migrant populations. Public health efforts should be targeted at increasing support among migrants to contrast the spread of the pandemic by potentiating vaccination campaigns, contact tracing, and COVID-19 diagnostic tests.

Barriers to Accessing Primary Care and Appropriateness of Healthcare Among Immigrants in Italy.

INTRODUCTION: The health status and health care needs of immigrant populations must be assessed. The aim of this study was to evaluate barriers to accessing primary care and the appropriateness of health care among resident immigrants in Italy, using indicators regarding maternal health, avoidable hospitalization, and emergency care. METHODS: Cross-sectional study using some indicators of the National Monitoring System of Health Status and Healthcare of the Immigrant Population (MSHIP), coordinated by the National Institute for Health, Migration and Poverty (INMP), calculated on perinatal care, hospital discharge, and emergency department databases for the years 2016-2017 in nine Italian regions (Piedmont, Trento, Bolzano, Emilia-Romagna, Tuscany, Umbria, Latium, Basilicata, Sicily). The analyses were conducted comparing immigrant and Italian residents. RESULTS: Compared to Italian women, immigrant women had fewer than five gynecological examinations (8.5 vs. 16.3%), fewer first examinations after the 12th week of gestational age (3.8 vs. 12.5%), and fewer than two ultrasounds (1.0 vs. 3.8%). Compared to Italians, immigrants had higher standardized rates (× 1,000 residents) of avoidable hospitalizations (males: 2.1 vs. 1.4; females: 0.9 vs. 0.7) and of access to emergency departments for non-urgent conditions (males: 62.0 vs. 32.7; females: 52.9 vs. 31.4). CONCLUSIONS: In Italy, there appear to be major issues regarding accessing services and care for the immigrant population. Policies aimed at improving socioeconomic conditions and promoting integration can promote healthy lifestyles and appropriate access to health care, counteracting the emergence of health inequities in the immigrant population.

General and COVID-19-Related Mortality by Pre-Existing Chronic Conditions and Care Setting during 2020 in Emilia-Romagna Region, Italy.

In 2020, the number of deaths increased in Italy, mainly because of the COVID-19 pandemic; mortality was among the highest in Europe, with a clear heterogeneity among regions and socio-demographic strata. The present work aims to describe trends in mortality and to quantify excess mortality variability over time and in relation to demographics, pre-existent chronic conditions and care setting of the Emilia-Romagna region (Northern Italy). This is a registry-based cross-sectional study comparing the 2020 observed mortality with figures of the previous five years by age, sex, month, place of death, and chronicity. It includes 300,094 deaths in those 18 years of age and above resident in the Emilia-Romagna region. Excess deaths were higher during the first pandemic wave, particularly among men and in March. Age-adjusted risk was similar among both men and women (Mortality Rate Ratio 1.15; IC95% 1.14-1.16). It was higher among females aged 75+ years and varied between sub-periods. Excluding COVID-19 related deaths, differences in the risk of dying estimates tended to disappear. Metabolic and neuropsychiatric diseases were more prevalent among those that deceased in 2020 compared to the deaths that occurred in 2015-2019 and therefore can be confirmed as elements of increased frailty, such as being in long-term care facilities or private homes as the place of death. Understanding the impact of the pandemic on mortality considering frailties is relevant in a changing scenario.

Educational inequalities in the prevalence and outcomes of diabetes in the Emilian Longitudinal Study.

BACKGROUND AND AIM: Studies carried out in Italy in the last decades reported an effect modification in the association between socioeconomic position and diabetes outcomes, and the disease integrated care approach has been suggested as an explanatory factor. Whether this is true in Emilia-Romagna region in recent years is unknown and the aim of this study is to describe the role of educational level both on diabetes prevalence and health outcomes among the adult population with and without diabetes enrolled in the Emilian Longitudinal Study. METHODS AND RESULTS: Inequalities in diabetes prevalence were evaluated through standardised estimates and prevalence ratios by educational level and inequalities in outcomes through standardised hospitalisation and mortality ratios and rate ratios by educational level. The lower the education the greater the diabetes prevalence; such differences were larger among women and younger age groups. Diabetes conferred a higher risk of hospitalisation and mortality; those outcomes also presented a social gradient with the less educated bearing the higher risk. However, educational differences were slightly stronger among the disease-free subjects, especially in the case of mortality. In both genders, inequalities tended to disappear with age. CONCLUSION: This study confirms that diabetes increases the risk of unfavourable outcomes, but does not increase social inequalities in outcomes as might be expected. Similarly to what has been previously shown, it is likely that the protective effect of diabetes on the negative health effects of the low social position is attributable to the disease integrated care approach.

Socioeconomic inequalities in overall and COVID-19 mortality during the first outbreak peak in Emilia-Romagna Region (Northern Italy).

OBJECTIVES: to provide a description of inequalities in overall and COVID-19 mortality by ecological socioeconomic measures (ESEMs) during the first outbreak peak (March and April 2020) in Emilia-Romagna Region. DESIGN: cross-sectional study based on the record linkage of the COVID-19 notification system, the regional population health register and the 2011 census data. SETTING AND PARTICIPANTS: residents in Emilia-Romagna who were grouped according to three ESEMs calculated at census block level: the index of deprivation, the household crowding, and the percentage of the foreign resident population. MAIN OUTCOME MEASURES: counts of all deaths and those directly attributable to COVID-19. The association between mortality and ESEMs was assessed through rate differences and mortality rate ratios, estimated through Poisson models. RESULTS: during the outbreak peak, the nine provinces of the Emilia-Romagna Region were unequally hit by the COVID-19 outbreak, with Piacenza recording the highest COVID-19 absolute death toll and Ferrara the lowest. The overall and COVID-19 mortality burden was unequal also in terms of ecological socioeconomic measures. Percentage differences in the age-standardised mortality rates between the least and the most disadvantaged census blocks were greater for COVID-19 mortality than for overall mortality, suggesting that the Coronavirus outbreak has had a stronger impact on the most socioeconomically deprived areas. Although clear gradients were not always present, people living in the most disadvantaged census blocks experienced the highest absolute and relative risk of dying. Rate differences were larger among men, but mortality rate ratios were not always greater among men than women, especially for the COVID-19 mortality. CONCLUSIONS: these descriptive yet informative results are relevant to document inequalities and inform regional public health policies and interventions in case of new COVID-19 surges.

[Urbanisation degree and mortality by education level in the Emilia-Romagna Longitudinal Study (Northern Italy)]. / Grado di urbanizzazione e mortalità per livello di istruzione nello Studio Longitudinale dell'Emilia-Romagna.

OBJECTIVES: to present the Longitudinal Study of Emilia-Romagna (SLER) and evaluate whether the effect of the education level on premature mortality is modified by the degree of urbanisation. DESIGN: closed cohort study. SETTING AND PARTICIPANTS: population aged >=30 years, resident in Emilia-Romagna Region (Northern Italy) and registered in the 2011 Italian Census, followed up until death, emigration, attainment of 75th year of age, or end of 2018. MAIN OUTCOME MEASURES: overall and cause-specific premature mortality (malignant tumours, lung and breast tumours, diseases of the circulatory system, respiratory system and digestive system, road accidents, death of despair, alcohol-related causes). RESULTS: the study population consisted of 2,579,936 individuals (15,508,972 person-years and 71,213 deaths). The population was equally distributed across the three degrees of urbanisation, but the prevalence of highly educated subjects was lower in the sparsely populated areas than in cities (12.9% vs 27.7%). The higher risk of mortality among the low educated was greatest, particularly among males, in the cities (MRR 1.68; 95%CI 1.62-1.75), lowest in the intermediate density areas (MRR 1.47; 95%CI 1.40-1.55), and not negligible among women. The interaction between education level and degree of urbanisation was significant for all-cause mortality, mortality from cardiovascular diseases, malignant tumours, especially lung cancer, road accidents (only among men). Among women, there were signs of an effect modification on mortality from diseases of respiratory and digestive systems. CONCLUSIONS: this first application of the SLER revealed that the mortality gradient by education level is greater in the cities, especially among men. These results deserve to be further explored through the analysis of other health outcomes and the investigation of the main drivers of the greater socioeconomic disadvantage observed in the cities.