Leptospirosis is a global zoonotic disease caused by pathogenic bacteria of the genus Leptospira. We sought to determine if rodents in U.S. Virgin Islands (USVI) are carriers of Leptospira. In total, 140 rodents were sampled, including 112 Mus musculus and 28 Rattus rattus. A positive carrier status was identified for 64/140 (45.7%); 49 (35.0%) were positive by dark-field microscopy, 60 (42.9%) by culture, 63 (45.0%) by fluorescent antibody testing, and 61 (43.6%) by real-time polymerase chain reaction (rtPCR). Molecular typing indicated that 48 isolates were L. borgpetersenii and 3 were L. kirschneri; the remaining nine comprised mixed species. In the single culture-negative sample that was rtPCR positive, genotyping directly from the kidney identified L. interrogans. Serotyping of L. borgpetersenii isolates identified serogroup Ballum and L. kirschneri isolates as serogroup Icterohaemorrhagiae. These results demonstrate that rodents are significant Leptospira carriers and adds to understanding the ecoepidemiology of leptospirosis in USVI.

During 2019–2020, the Virgin Islands Department of Health investigated potential animal reservoirs of Leptospira spp., the bacteria that cause leptospirosis. In this cross-sectional study, we investigated Leptospira spp. exposure and carriage in the small Indian mongoose (Urva auropunctata, syn: Herpestes auropunctatus), an invasive animal species. This study was conducted across the three main islands of the U.S. Virgin Islands (USVI), which are St. Croix, St. Thomas, and St. John. We used the microscopic agglutination test (MAT), fluorescent antibody test (FAT), real-time polymerase chain reaction (lipl32 rt-PCR), and bacterial culture to evaluate serum and kidney specimens and compared the sensitivity, specificity, positive predictive value, and negative predictive value of these laboratory methods. Mongooses (n = 274) were live-trapped at 31 field sites in ten regions across USVI and humanely euthanized for Leptospira spp. testing. Bacterial isolates were sequenced and evaluated for species and phylogenetic analysis using the ppk gene. Anti-Leptospira spp. antibodies were detected in 34% (87/256) of mongooses. Reactions were observed with the following serogroups: Sejroe, Icterohaemorrhagiae, Pyrogenes, Mini, Cynopteri, Australis, Hebdomadis, Autumnalis, Mankarso, Pomona, and Ballum. Of the kidney specimens examined, 5.8% (16/270) were FAT-positive, 10% (27/274) were culture-positive, and 12.4% (34/274) were positive by rt-PCR. Of the Leptospira spp. isolated from mongooses, 25 were L. borgpetersenii, one was L. interrogans, and one was L. kirschneri. Positive predictive values of FAT and rt-PCR testing for predicting successful isolation of Leptospira by culture were 88% and 65%, respectively. The isolation and identification of Leptospira spp. in mongooses highlights the potential role of mongooses as a wildlife reservoir of leptospirosis; mongooses could be a source of Leptospira spp. infections for other wildlife, domestic animals, and humans. Leptospirosis is a zoonotic disease caused by bacteria of the genus Leptospira. To better understand local reservoirs and risk factors to humans and animals, during 2019–2020, the Virgin Islands Department of Health (VIDOH) investigated Leptospira spp. in association with the small Indian mongoose (Urva auropunctata, syn: Herpestes auropunctatus) across the three main islands of the United States Virgin Islands (USVI) (St. Croix, St. Thomas, and St. John). Mongoose blood and kidney samples were evaluated by laboratory testing: microscopic agglutination test, fluorescent antibody test (FAT), real-time polymerase chain reaction (lipl32 rt-PCR), and culture. Of 256 mongooses, 34% were exposed to Leptospira spp. To assess active infection in mongooses, kidney samples were examined resulting 5.8% (16/270) FAT-positive, 10% (27/274) culture-positive, and 12.4% (34/274) rt-PCR-positive. Validity was compared between test types showing higher positive predictive value for FAT and rt-PCR testing for predicting successful culture, the reference standard for diagnosis. Through the detection and isolation of Leptospira spp. in mongooses across the USVI, we identified mongooses as potential disease vectors to the local population and added to the limited data for the Caribbean region. Furthermore, a validity assessment of reference testing provides data to potentially inform future leptospirosis diagnostics.

Background: Previous survival studies on hepatocellular carcinoma (HCC) by etiology are limited to hospital-based series, restricted cohorts, and monolithic etiologic categories. We studied population-based survival by seven mutually exclusive HCC etiologic groups—standalone hepatitis-C virus (HCV), hepatitis-B virus (HBV), alcohol-related liver disease (ALD), nonalcoholic fatty liver disease (NAFLD), and dual etiology HCV–HBV, HCV–ALD, and HBV–ALD—accounting for clinical and sociodemographic characteristics. Methods: All HCC cases diagnosed during 2005 to 2018 from the Florida Cancer Registry were linked for etiology using statewide discharge and viral hepatitis data. We performed a cause-specific survival analysis including Cox regression for the matched 15,616 cases by HCC etiology. Results: The leading etiology was HCV only (n = 4,983; 31.9%); the leading dual etiology was HCV–ALD (n = 2,552; 16.3%). The five-year adjusted survival was low—17.6% overall and <22% across all HCC etiologies. ALD-related etiologies [ALD only (14.4%; 95% confidence interval (CI), 12.7–16.0), HCV–ALD (10.2%; 95% CI, 8.7–11.7), and HBV–ALD (8.2%; 95% CI, 2.2–14.1)] showed lower survival than non-ALD causes—HCV only, HBV only, and NAFLD only. After adjustment for clinical and sociodemographic covariates, ALD and HBV–ALD HCC had 1.20 (95% CI, 1.13–1.27) and 1.28 (95% CI, 1.06–1.54) times higher risk of death compared with those with HCV-only HCC. Conclusions: ALD only and dual etiologies involving ALD show worse prognosis for HCC compared with viral etiology alone. To increase survival, improved screening and treatment are needed for patients with multiple HCC risk factors. Impact: Understanding US disparities in HCC survival by etiology can help guide the identification of etiologically specific biomarkers and potential therapeutic targets and inform public health measures.

Lung cancer (LC) incidence rates and tumor characteristics among (non-Hispanic) Black and Hispanic detailed groups, normally characterized in aggregate, have been overlooked in the US. We used LC data from the Florida state cancer registry, 2012–2018, to compute LC age-adjusted incidence rates (AAIR) for US-born Black, Caribbean-born Black, Mexican, Puerto Rican, Cuban, Dominican, and Central and South American populations. We analyzed 120,550 total LC cases. Among Hispanics, Cuban males had the highest AAIR (65.6 per 100,000; 95%CI: 63.6–67.6), only 8% [Incidence Rate Ratio (IRR): 0.92; 95%CI: 0.89–0.95] lower than Whites, but 2.7 (IRR 95%CI: 2.31-3.19) times higher than Central Americans. Among Blacks, the AAIR for US-born Black males was over three times that of those Caribbean-born (IRR: 3.12; 95%CI: 2.80–3.40) and 14% higher than White males (IRR: 1.14; 95%CI: 1.11–1.18). Among women, US-born Blacks (46.4 per 100,000) and foreign-born Mexicans (12.2 per 100,000) had the highest and lowest rates. Aggregation of non-Hispanic Blacks or Hispanics obscures inherent disparities within groups. Understanding the distinct LC rates in US populations is crucial for targeting public health measures for LC diagnosis, prevention, and treatment. Further LC research exploring detailed race–ethnicity regarding LC in never-smokers is necessary, particularly among females and considering pertinent environmental factors.

From 2019–2020, the Virgin Islands Department of Health (VIDOH) investigated potential animal reservoirs of Leptospira spp., the pathogenic bacteria that cause leptospirosis. We examined Leptospira exposure and carriage in livestock on the island of St. Croix, United States Virgin Islands (USVI). We utilized the microscopic agglutination test (MAT) to evaluate the sera, and the fluorescent antibody test (FAT), real time polymerase chain reaction (rt-PCR), and bacterial culture to evaluate urine specimens from livestock (n = 126): 28 cattle, 19 goats, 46 pigs, and 33 sheep. Seropositivity was 37.6% (47/125) with agglutinating antibodies to the following serogroups identified: Australis, Djasiman, Icterohaemorrhagiae, Ballum, Sejroe, Cynopteri, Autumnalis, Hebdomadis, Pomona, Canicola, Grippotyphosa, and Pyrogenes. Urine from 4 animals (4.0%, 4/101) was positive by rt-PCR for lipL32: 2 sheep, 1 goat, and 1 bull. Sequencing of secY amplicons identified L. interrogans in 1 sheep and 1 bull. Livestock in USVI harbor pathogenic Leptospira bacteria and could play a role in the zoonotic cycle of leptospirosis.

Aim: Examine racial and ethnic inequities in hepatitis C and B virus (HCV and HBV) screening across high-risk populations. Subject and Methods: Chronic HCV and HBV infections can lead to cirrhosis, hepatocellular carcinoma (HCC), and death. Despite universal screening recommendations, < 50% of US adults are tested for these viruses. Populations with lower socio-economic status experience higher rates of viral-related cirrhosis and HCC, which may be reduced through screening and treatment. This study analyzed data from 91,875 patients (2019–2021) at the Health Choice Network, a federally qualified health center in Florida. Logistic regression assessed the determinants of HCV and HBV screening, considering factors such as age, sex, language, and race/ethnicity. Results: The study population was predominantly female, Hispanic, uninsured, and living below the federal poverty line. Overall, 61.7% had HCV screening, and 43.7% had HBV screening. Haitian Creole-speaking patients (aOR 1.67; 95% CI, 1.50–1.85), Asian (aOR 1.41; 95% CI, 1.26–1.58), Spanish-speaking Hispanic (aOR 1.38; 95% CI, 1.32–1.44), and English-speaking Hispanic patients (aOR 1.12; 95% CI, 1.07–1.18) had higher odds of HCV screening, compared to NH-Whites. Similarly, Haitian Creole-speaking (aOR 1.91; 95% CI, 1.73–2.12), Asian (aOR 1.50; 95% CI, 1.33–1.68), and Spanish-speaking Hispanic patients (aOR 1.23; 95% CI, 1.17–1.29) had higher odds of HBV screening. Conclusion: For an underserved population context, screening rates were above average, with higher prevalence among historically disadvantaged populations. However, rates remained suboptimal, particularly among NH-Whites, who account for the largest number of HCV-related liver cancers, often linked to injection drug use. Increasing screening, especially among NH-Whites and English-speaking Hispanics for HCV, is crucial for early diagnosis, treatment, and reducing severe liver disease risk, including cirrhosis and HCC.