Early-onset pancreatic cancer and associated metabolic risk factors in the Middle East and North Africa: A 20-year analysis of the Global Burden of Disease Study.

BACKGROUND AND OBJECTIVE: Early-onset pancreatic cancer (EOPC) is associated with poor prognosis and high disease burden. Metabolic risk factors such as diabetes and obesity are considered risk factors of EOPC. Recently, there has been an increasing number of EOPCs worldwide. However, the analysis of EOPC, including its metabolic risk factors, in the Middle East and North Africa (MENA) region has not been fully addressed. METHODS: Data from the Global Burden of Disease Study between 2000 and 2019 was used to analyze the prevalence, incidence, deaths and disability-adjusted life years (DALYs) associated with EOPC and its metabolic risk factors. The analysis further categorized the data based on countries, income status and sex and examined the annual percentage change (APC). RESULTS: Approximately 2800 cases, 2400 deaths and 114,000 DALYs were attributable to EOPC in the MENA region. The incidence (APC + 3.42%), death (APC + 0.73%) and DALYs (APC + 3.23%) rates of EOPC increased. In addition, the death and DALY rates of EOPC attributable to obesity and diabetes increased. High and upper-middle-income countries exhibited a higher burden of EOPC than lower-income countries. CONCLUSION: Over the past two decades, the burden of EOPC and its associated metabolic risk factors has increased. There is an urgent need for region-wide policy development, including screening methods and risk factor reduction, to mitigate the high and rising burden of EOPC in the MENA region.

The growing trend of vascular intestinal disorder in young individuals: a 20-year analysis.

Background: Vascular intestinal disorder (VID) is a condition with a low incidence, but a high mortality risk. The increasing prevalence of substance abuse and metabolic syndrome among young individuals could impact the burden of VID. This study aimed to evaluate the impact of VID on young individuals. Methods: Our study harnessed data from the Global Burden of Disease study, spanning 2000 to 2019. With this extensive dataset, we conducted a comprehensive analysis of the prevalence, mortality rates, and impact on disability-adjusted life years (DALYs) related to VID among young individuals aged 15 to 49 years. Results: Globally, there were an estimated 32,628 cases, 3869 deaths, and 201,099 million DALYs attributed to VID in young individuals. Geographically, the regions of America had the highest burden of VID in young individuals. From 2000-2019, there was an increasing prevalence in all areas, with the most pronounced change observed in Southeast Asia (annual percentage change [APC] +2.17%, P<0.001). Over the study period, there was a more rapid increase in prevalence in males (APC +0.82%, P<0.001) than in females (APC +0.59%, P<0.001). Rates of death and DALYs declined in most regions, except for the Eastern Mediterranean region, where there was a slight increase (APC +0.85%, P<0.001 and 0.88%, P<0.001, respectively). Conclusion: Over the past decade, the burden of VID in young individuals has been increasing, particularly in Southeast Asia and the Eastern Mediterranean region, necessitating immediate and inclusive measures to tackle the rising burden.

Clostridioides difficile Infection in the Elderly: Trend Analysis from 2000 to 2019.

Background/Objective: Clostridioides difficile infection (CDI) is a common healthcare-associated ailment, presenting major health and economic challenges, especially for the elderly. Despite its prevalence, comprehensive data about CDI's impact on the elderly are limited. Methods: This study used the Global Burden of Disease Study 2019 data to analyze CDI trends from 2000 to 2019, considering factors like sex, region, and sociodemographic index (SDI). Results: This study revealed that CDI caused approximately 18,181 deaths and 252,709 disability-adjusted life years (DALYs) among the elderly worldwide. The Americas showed the highest CDI burden, while the Eastern Mediterranean saw the steepest rate increase from 2000 to 2019. Regions with a high SDI also displayed substantial CDI impact. Conclusions: The escalating burden of CDI in the elderly, especially in high-SDI areas and the Americas, emphasizes an urgent need for targeted public health strategies.

Global epidemiology of alcohol-associated liver disease in adolescents and young adults.

BACKGROUND AND AIMS: The objective of the study was to analyse the prevalence, incidence, and death of alcohol-associated liver disease (ALD) among adolescents and young adults globally, continentally, and nationally, focusing on trends over time. METHODS: The study analysed data from the Global Burden of Disease (GBD) study between 2000 and 2019. It examined ALD's prevalence, incidence, and death in adolescents and young adults aged 15-29, segmented by region, nation, and sociodemographic index. The analysis utilised Joinpoint regression modelling to calculate the annual per cent change (APC) in the rate of these parameters over time. RESULTS: In 2019, there were 281,450 ALD prevalences, 18,930 incidences, and 3190 deaths among adolescents and young adults globally. From 2000 to 2019, the age-adjusted prevalence rate per 100,000 increased in the 25-29 age group (APC: +0.6%, p = 0.003), remained stable among ages 20-24 (p = 0.302) and ages 15-19 (p = 0.160). Prevalence increased significantly from age 15-19 to 20-24 (19-fold increase) and from age 20-24 to 25-29 (2.5-fold increase). ALD prevalence rates increased in all age groups in adolescents and young adults in Africa and the Eastern Mediterranean region. Around three-quarters of countries and territories experienced an increase in ALD incidence rates in young adults. CONCLUSION: Over two decades, the burden of ALD among adolescents and young adults has increased globally. The study emphasises the importance of public health policies aimed at reducing alcohol consumption and preventing ALD among younger populations.

The Burden of Overweight and Obesity-Associated Gastrointestinal Cancers in Low and Lower-Middle-Income Countries: A Global Burden of Disease 2019 Analysis.

INTRODUCTION: Obesity is associated with cancer, including gastrointestinal (GI). Data from low (LICs) and lower-middle-income countries (MICs) are limited. METHODS: We utilized data from the Global Burden of Disease Study 2019 to determine the mortality from GI cancer risk of high body mass index (BMI) in these countries. RESULTS: Mortality rates of GI cancers from high BMI increased in LICs and lower MICs, while burdens decreased or remained stable in high and middle-income countries. DISCUSSION: The GI cancer-related burden from high BMI increased in LICs and lower MICs, necessitating a concerted effort to tackle the obesity pandemic.

Socio-economic association of alcohol use disorder and cardiovascular and alcohol-associated liver disease from 2010 to 2019.

BACKGROUNDS AND AIMS: Alcohol use leads to disabilities and deaths worldwide. It not only harms the liver but also causes alcohol use disorder (AUD) and heart disease. Additionally, alcohol consumption contributes to health disparities among different socio-economic groups. METHODS: We estimated global and regional trends in the burden of AUD, liver disease, and cardiovascular disease from alcohol using the methodology of the Global Burden of Disease study. RESULTS: In 2019, the highest disability-adjusted life years rate per 100,000 population was due to AUD (207.31 [95% Uncertainty interval (UI) 163.71-261.66]), followed by alcohol-associated liver disease (ALD) (133.31 [95% UI 112.68-156.17]). The prevalence rate decreased for AUD (APC [annual percentage change] -0.38%) and alcohol-induced cardiomyopathy (APC -1.85%) but increased for ALD (APC 0.44%) and liver cancer (APC 0.53%). Although the mortality rate for liver cancer from alcohol increased (APC 0.30%), mortality rates from other diseases decreased. Between 2010 and 2019, the burden of alcohol-associated complications increased in countries with low and low-middle sociodemographic index (SDI), contributing more significantly to the global burden. CONCLUSION: The global burden of AUD, liver, and cardiovascular disease has been high and increasing over the past decade, particularly for liver complications. Lower SDI countries are contributing more to this global burden. There is a pressing need for effective strategies to address this escalating burden.

The burden of alcohol-related cardiovascular complications in young and middle-aged adults: rising burden of atrial fibrillation and hypertensive heart disease.

BACKGROUND AND AIMS: The burden of alcohol-related complications is high and rising. However, there are notable deficiencies in comprehensive epidemiological study focusing on cardiovascular complications from alcohol, especially among young and middle-aged adults. We thus aimed to determine the burden of these conditions in young and middle-aged adults globally. METHODS AND RESULTS: We used data from the Global Burden of Disease Study 2019 and analysed the mortality and disability-adjusted life years of alcohol-associated cardiovascular complications in young and middle-aged adults. The findings were classified by sex, region, country, and Sociodemographic Index (SDI). The highest age-standardized death rates (ASDR) were observed in stroke 0.84 (95% UI 0.60-1.09), followed by alcoholic cardiomyopathy 0.57 (95% UI 0.47-0.66) per 100,000 population. The overall burden of alcohol-associated cardiovascular complications decreased globally but increased in atrial fibrillation and hypertensive heart disease. Regionally, most regions underwent a decrease in ASDR, but an increase was observed in Southeast Asia (+2.82%), Western Pacific (+1.48%), low-middle (+1.81%), and middle SDI (+0.75%) countries. Nevertheless, the ASDR and ASDALYs were highest in Europe. CONCLUSIONS: The impact of alcohol-associated atrial fibrillation and hypertensive heart disease has increased over the last decades. Regarding region, the burden in Europe and the rising burden in Asia, require immediate public health policy to lessen these cardiovascular complications from alcohol in young and middle-aged adults.

Global epidemiology of early-onset upper gastrointestinal cancer: trend from the Global Burden of Disease Study 2019.

BACKGROUND AND AIM: In recent years, there has been a growing incidence of gastrointestinal cancer in young individuals. Despite its significant morbidity and mortality, research on upper gastrointestinal (UGI) cancer in young populations has been relatively limited. Therefore, studies on the epidemiological changes of this cancer are needed. METHODS: Using data from the Global Burden of Disease Study 2019, we examined the incidence, death, and disability-adjusted life years (DALYs) from UGI cancers in the young, namely, early-onset esophageal cancer (EOEC) and early-onset gastric cancer (EOGC). These results were stratified by sex, geographical region, country, and sociodemographic index. RESULTS: There was a total of 185 140 cases, 120 289 deaths, and 5.70 million DALYs attributable to early-onset UGI cancers globally. From 2010 to 2019, the global incidence, death, and DALYs rates of early-onset UGI cancers decreased. In contrast, the incidence rates increased in both EOEC (+1.15%) and EOGC (+0.21%) in the Eastern Mediterranean region. CONCLUSIONS: Over the past decade, the burden of UGI cancer in the young has decreased. However, it has increased in the Eastern Mediterranean region. Further research to elucidate the attributable risk factors in this population is warranted.

Incidence of liver cancer in young adults according to the Global Burden of Disease database 2019.

BACKGROUND AND AIMS: The worldwide burden of cancer is increasing in younger populations. However, the epidemiology of primary liver cancer remains understudied in young adults compared to other cancer forms. APPROACH AND RESULTS: This study analyzed data from the Global Burden of Disease study between 2010 and 2019 to assess the age-standardized incidence, mortality, and disability-adjusted life years associated with primary liver cancer in the young (15-49 y), stratified by region, nation, sociodemographic index, and sex. The study found a global estimate of 78,299 primary liver cancer cases, 60,602 deaths, and 2.90 million disability-adjusted life years in the young population. The Western Pacific region exhibited the highest burden in 2019, showing the most significant increase compared to other regions between 2010 and 2019. More than half of the countries worldwide have undergone an increase in primary liver cancer incidence rates in young adults. Around 12.51% of deaths due to primary liver cancer occur in young individuals. Throughout the study period, there was a significant decline in primary liver cancer mortality due to most etiologies, except for metabolic dysfunction-associated steatotic liver disease-attributable primary liver cancer (annual percentage change + 0.87%, 95% CI: 0.70%-1.05%) and alcohol-attributable primary liver cancer (annual percentage change + 0.21%, 95% CI: 0.01%-0.42%). The limitations of the Global Burden of Disease database include reliance on the quality of primary data and possible underestimation of alcohol consumption. CONCLUSIONS: Over the past decade, there has been a marked increase in the burden of primary liver cancer, especially that originating from steatotic liver disease. This trend calls for the development of urgent and comprehensive strategies to mitigate this rising burden globally.

Metabolic Syndrome and Metabolic Dysfunction-Associated Steatotic Liver Disease in Premenopausal Women: Global Trends and Projections to 2040.

OBJECTIVE: To quantify the burden of metabolic dysfunction-associated steatotic liver disease (MASLD) and related metabolic disorders in premenopausal women. PATIENTS AND METHODS: Between 2010 and 2019, global evaluations of prevalence, mortality, disability-adjusted life years (DALYs), and their age-standardized rate (ASR) were conducted for metabolic conditions such as MASLD, type 2 diabetes mellitus, dyslipidemia, hypertension (HTN), obesity, and polycystic ovarian syndrome. Subgroup assessments were conducted according to geographical regions and the sociodemographic index. The predictive models were established to estimate mortality and DALYs through 2040. RESULTS: In 2019, the most significant ASR of deaths was found in HTN (11.37; 9.52 to 13.45), followed by obesity (10.49; 7.57 to 13.64). In contrast, the greatest ASR of DALYs was attributed to obesity (816.13; 581.41 to 1073.32), followed by HTN (634.73; 536.75 to 744.77). The mortality rates for dyslipidemia (-0.55%) and HTN (-0.72%) have been decreasing over time, but there has been an increase in obesity (+0.58%), type 2 diabetes mellitus (+0.85%), and MASLD (+0.51%). Lower sociodemographic index countries exhibit a higher disability-to-prevalence ratio. In 2040, obesity is predicted to cause the most deaths (+41.59% from 2019). CONCLUSION: The escalating impact of metabolic syndrome, the rising trends in death rates linked to obesity, and the disparities based on region and socioeconomic status in premenopausal women underscore the alarming increase in the global burden of metabolic syndrome.

The Global Burden of Early-Onset Pancreatic Cancer and Its Risk Factors: A Perspective From Global Burden of Disease Study 2019.

OBJECTIVES: Despite evidence of increased incidence of early-onset pancreatic cancer (EOPC), defined as pancreatic cancer diagnosed in patients below 50 years old, and its risk factors in the Western region, global epidemiological data addressing this issue is still lacking. MATERIALS AND METHODS: Utilizing data from the Global Burden of Disease Study 2019, we aimed to conduct a comprehensive analysis of the incidence, deaths, and disability-adjusted life years (DALYs) associated with EOPC and its risk factors, including smoking, obesity, and diabetes. The analysis examined the annual percentage change (APC) over the period. RESULTS: In 2019, the incidence of EOPC surpassed 35,000 cases worldwide. This burden of EOPC tends to be more prevalent in males, as well as in Europe and high SDI countries. However, there is a noticeable upward trend in the burden of EOPC in the Eastern Mediterranean. While there is a global decline in EOPC mortality attributed to smoking (APC -0.33%), there is a concerning increase in mortality associated with diabetes (APC +2.84%) and obesity (APC +2.12%). CONCLUSIONS: The burden of EOPC has been increasing. The mortality is rising mainly from metabolic factors. There is an urgent need for national policy development for reducing the burden of this disease.

The Global Burden of Early-Onset Biliary Tract Cancer: Insight From the Global Burden of Disease Study 2019.

Backgrounds/objectives: The escalating incidence of early-onset gastrointestinal cancers is becoming a primary global health concern. Biliary tract cancer (BTC) has been relatively understudied in this regard. We conducted an epidemiological study regarding the burden of this condition. Methods: We utilized data from the Global Burden of Disease Study 2019 to investigate the temporal trends in early-onset BTC (EOBTC), encompassing the estimation of frequencies and age-standardized rates (ASRs) of EOBTC incidence, mortality, and disability-adjusted life-years (DALYs), from 2010 to 2019. Results: EOBTC constituted nearly 7%of all BTC cases worldwide. The incidence rates of EOBTC decreased significantly in most regions, except in the Eastern Mediterranean (annual percentage change +1.04 %), where the incidence is rising. Stratified by the sociodemographic index (SDI), countries with low middle SDI (annual percentage change +0.5 %) show increasing incidence of EOBTC. The ASR of death and DALYs decreased in most regions. The ASR of EOBTC-related death and disability attributable to high body mass index increased in most regions, with the highest increase in Southeast Asia and low, middle SDI strata. Conclusions: There was a reduction in the burden of EOBTC globally, except for Eastern Mediterranean countries and low-middle SDI countries.

From Shadows to Spotlight: Exploring the Escalating Burden of Alcohol-Associated Liver Disease and Alcohol Use Disorder in Young Women.

INTRODUCTION: The burden of alcohol-related complications is considerable, particularly alcohol-associated liver disease and alcohol use disorder (AUD). However, there are deficiencies in comprehensive epidemiological research focusing on these issues, especially among young women who display higher susceptibility to such complications compared with their male counterparts. We thus aimed to determine the global burden of these conditions in this vulnerable group. METHODS: Leveraging data from the Global Burden of Disease Study 2019, we analyzed the prevalence, mortality, and disability-adjusted life years of alcohol-associated cirrhosis (AC), liver cancer from alcohol, and AUD in young women. The findings were categorized by region, nation, and sociodemographic index. RESULTS: The highest age-standardized prevalence rates were observed in AUD (895.96 [95% uncertainty interval (UI) 722.6-1,103.58]), followed by AC (65.33 [95% UI 48.37-86.49]) and liver cancer from alcohol (0.13 [95% UI 0.09-0.19]) per 100,000 people. The highest age-standardized mortality rates were observed in AC (0.75 [95% UI 0.55-0.97]), followed by AUD (0.48 [95% UI 0.43-0.53]) and liver cancer from alcohol (0.06 [95% UI 0.04-0.09]). The highest burdens of AC and AUD were observed in Central Europe, whereas the high-income Asia Pacific had the highest burden of liver cancer from alcohol. DISCUSSION: Throughout the past decade, the trend of AUD varied among regions while the impact of alcohol-associated liver disease has increased, requiring urgent public health strategy to mitigate these complications, particularly in female patients in Europe and the Asia-Pacific region.

The Surreptitious Burden of Nonalcoholic Fatty Liver Disease in the Elderly in the Asia-Pacific Region: An Insight from the Global Burden of Disease Study 2019.

Nonalcoholic fatty liver disease (NAFLD) represents a significant health threat worldwide. The aging population and a rise in metabolic syndrome in Asia might influence the epidemiology of NAFLD among the elderly. However, there is a lack of understanding of the burden and recommendations for NAFLD in this group. Our study sought to investigate the trends in the NAFLD burden among the elderly in the Asia-Pacific region. We employed data from the Global Burden of Disease 2019 study for an in-depth analysis of the prevalence and disability-adjusted life years (DALYs) along with age-standardized rate (ASR) associated with NAFLD in elderly populations (age 65-89 years) across the Asia-Pacific region, including the Southeast Asia (SEA) and Western Pacific (WP) regions, from 2010 to 2019. This study also examined the trends and disparities in NAFLD burden across different nations and sexes. In 2019, there were over 120 million cases of NAFLD in the elderly in the Asia-Pacific region. The ASR of prevalence was higher in SEA compared to WP (36,995.37 vs. 32,821.78 per 100,000). ASR of prevalence increased with annual percentage change (APC) +0.95% in the WP while it increased by +0.87% in SEA. During the study period, the ASR of DALYs decreased in SEA (APC -0.41%) but remained stable in the WP region. The burden of NAFLD in the elderly population in Asia-Pacific has increased, underscoring the timely intervention to tackle this high and rising burden.

Clinical Characteristics, Antimicrobial Resistance, Virulence Genes and Multi-Locus Sequence Typing of Non-Typhoidal Salmonella Serovar Typhimurium and Enteritidis Strains Isolated from Patients in Chiang Mai, Thailand.

Non-typhoidal salmonellosis (NTS) caused by ingesting Salmonella enterica contaminated food or drink remains a major bacterial foodborne disease. Clinical outcomes of NTS range from self-limited gastroenteritis to life-threatening invasive NTS (iNTS). In this study, we isolated Salmonella spp. from the stool and blood of patients hospitalized at Maharaj Nakorn Chiang Mai Hospital, Chiang Mai, Thailand, between 2016-2021 (a total of 395 cases). Then, serovar Typhimurium and Enteritidis were identified and further characterized by multiplex PCR, and multi-locus sequence typing. Our data show that multidrug resistance (MDR) sequence type 34 (ST34) and ST11 are the predominant sequence types for serovars Typhimurium and Enteritidis, respectively. Most S. Typhimurium ST34 lacks spvB, and most S. Enteritidis ST11 harbor sseI, sodCI, rpoS and spvB genes. NTS can be found in a wide range of ages, and anemia could be a significant factor for S. Typhimurium infection (86.3%). Both S. Typhimurium (6.7%) and S. Enteritidis (25.0%) can cause iNTS in immunocompromised patients. S. Typhimurium conferred MDR phenotype higher than S. Enteritidis with multiple antibiotic resistance indexes of 0.22 and 0.04, respectively. Here, we characterized the important S. Typhimurium, S. Enteritidis, and human clinical factors of NTS within the region.

The silent burden of non-alcoholic fatty liver disease in the elderly: A global burden of disease analysis.

BACKGROUND: Non-alcoholic fatty liver disease (NAFLD) represents a significant health threat worldwide. The growing trend towards an aging population, along with an alarming rise in obesity and diabetes, may have significant implications for the burden of NAFLD. AIM: To assess the impact of NAFLD on the elderly. METHODS: We utilised data from the Global Burden of Disease study between 2010 and 2019 to conduct a comprehensive analysis of the prevalence, mortality, and disability-adjusted life years (DALYs) associated with NAFLD in the elderly (65-89 years), stratified by region, nation, sociodemographic Index and sex. RESULTS: Globally, there were an estimated 228 million cases, 87,230 deaths and 1.46 million DALYs attributed to NAFLD in the elderly. Geographically, the Western Pacific region had the highest burden of NAFLD in the elderly. From 2010 to 2019, there was an increasing prevalence rate in all areas, with the most pronounced change observed in the Western Pacific region (annual percentage change (APC) +0.95%, p < 0.001). Over the study period, there was a more rapid increase in NAFLD prevalence in men (APC +0.74%, p < 0.001) than in women (APC +0.63%, p < 0.001). In most regions, death and DALYs rates have declined, with the exception of the Americas, where there was a slight increase (APC +0.25%, p = 0.002 and 0.38%, p < 0.001, respectively). CONCLUSION: Over the past decade, the burden of NAFLD in the elderly has been increasing, necessitating immediate and inclusive measures to tackle the rising burden.

Global Epidemiology and Burden of Elderly-Onset Inflammatory Bowel Disease: A Decade in Review.

Inflammatory bowel disease (IBD), once thought to impact younger individuals, now manifests in approximately 10% of patients over 65, characterized by a heightened vulnerability to complications and greater diagnostic intricacies than conventional cases. However, comprehensive global epidemiological data regarding elderly-onset IBD are currently insufficient. Our study addresses this critical gap by analyzing trends in elderly-onset IBD over a decade, encompassing the estimation of annual frequencies and age-standardized rates of elderly-onset IBD burden for both genders, stratifying the data by geographical and sociodemographic factors. Our research highlights a notable increase in the proportion of elderly-onset IBD, constituting around 13% of all IBD cases. We observed a rising incidence in males, contrasted by a decreasing trend in females. The highest surge in incidence rates was seen in the Western Pacific region in both genders, but the highest burden was observed in America. Countries with high sociodemographic index (SDI) carried the greatest burden of elderly-onset IBD, while countries with low SDI had the least. The mortality and disability-adjusted life years (DALYs) rates trend downward in most regions. This study underscores an increasing incidence and proportion of IBD, particularly in elderly-onset IBD, particularly in males. While mortality and DALYs are decreasing in most regions, the overall burden remains highest in America and high-SDI countries. Effective public health interventions and comprehensive studies are required to tackle this mounting burden.

Under-Reporting Cases and Deaths from Melioidosis: A Retrospective Finding in Songkhla and Phatthalung Province of Southern Thailand, 2014-2020.

Melioidosis, caused by Burkholderia pseudomallei, is a notifiable disease associated with a high mortality rate in Thailand. The disease is highly endemic in northeast Thailand, while its prevalence in other parts of the country is poorly documented. This study aimed at improving the surveillance system for melioidosis in southern Thailand, where the disease was believed to be underreported. Two adjacent southern provinces, Songkhla and Phatthalung, were selected as the model provinces to study melioidosis. There were 473 individuals diagnosed with culture-confirmed melioidosis by clinical microbiology laboratories at four tertiary care hospitals in both provinces from January 2014 to December 2020. The median age was 54 years (IQR 41.5-64), 284 (60%) of the patients were adults ≥50 years of age, and 337 (71.2%) were male. We retrospectively analyzed 455 patients treated at either Songklanarind Hospital, Hatyai Hospital, Songkhla Provincial Hospital, or Phatthalung Provincial Hospital, of whom 181 (39.8%) patients died. The median duration from admission to death was five days (IQR 2-17). Of the 455 patients, 272 (57.5%) had at least one clinical risk factor, and 188 (39.8%) had diabetes. Two major clinical manifestations, bacteremia and pneumonia, occurred in 274 (58.1%) and 166 (35.2%) patients, respectively. In most cases, 298 (75%) out of 395 local patients were associated with rainfall. Over the seven years of the study, the average annual incidence was 2.87 cases per 100,000 population (95% CI, 2.10 to 3.64). This study has confirmed that these two provinces of southern Thailand are endemic to melioidosis; even though the incidence rate is much lower than that of the Northeast, the mortality rate is comparably high.

Genotypic Diversity, Antibiotic Resistance, and Virulence Phenotypes of Stenotrophomonas maltophilia Clinical Isolates from a Thai University Hospital Setting.

Stenotrophomonas maltophilia is a multidrug-resistant organism that is emerging as an important opportunistic pathogen. Despite this, information on the epidemiology and characteristics of this bacterium, especially in Thailand, is rarely found. This study aimed to determine the demographic, genotypic, and phenotypic characteristics of S. maltophilia isolates from Maharaj Nakorn Chiang Mai Hospital, Thailand. A total of 200 S. maltophilia isolates were collected from four types of clinical specimens from 2015 to 2016 and most of the isolates were from sputum. In terms of clinical characteristics, male and aged patients were more susceptible to an S. maltophilia infection. The majority of included patients had underlying diseases and were hospitalized with associated invasive procedures. The antimicrobial resistance profiles of S. maltophilia isolates showed the highest frequency of resistance to ceftazidime and the lower frequency of resistance to chloramphenicol, levofloxacin, trimethoprim/sulfamethoxazole (TMP/SMX), and no resistance to minocycline. The predominant antibiotic resistance genes among the 200 isolates were the smeF gene (91.5%), followed by blaL1 and blaL2 genes (43% and 10%), respectively. Other antibiotic resistance genes detected were floR (8.5%), intI1 (7%), sul1 (6%), mfsA (4%) and sul2 (2%). Most S. maltophilia isolates could produce biofilm and could swim in a semisolid medium, however, none of the isolates could swarm. All isolates were positive for hemolysin production, whereas 91.5% and 22.5% of isolates could release protease and lipase enzymes, respectively. In MLST analysis, a high degree of genetic diversity was observed among the 200 S. maltophilia isolates. One hundred and forty-one sequence types (STs), including 130 novel STs, were identified and categorized into six different clonal complex groups. The differences in drug resistance patterns and genetic profiles exhibited various phenotypes of biofilm formation, motility, toxin, and enzymes production which support this bacterium in its virulence and pathogenicity. This study reviewed the characteristics of genotypes and phenotypes of S. maltophilia from Thailand which is necessary for the control and prevention of S. maltophilia local spreading.