Characterization of Dengue Virus 4 Cases in Paraguay, 2019-2020.

In 2019-2020, dengue virus (DENV) type 4 emerged to cause the largest DENV outbreak in Paraguay's history. This study sought to characterize dengue relative to other acute illness cases and use phylogenetic analysis to understand the outbreak's origin. Individuals with an acute illness (≤7 days) were enrolled and tested for DENV nonstructural protein 1 (NS1) and viral RNA by real-time RT-PCR. Near-complete genome sequences were obtained from 62 DENV-4 positive samples. From January 2019 to March 2020, 799 participants were enrolled: 253 dengue (14 severe dengue, 5.5%) and 546 other acute illness cases. DENV-4 was detected in 238 dengue cases (94.1%). NS1 detection by rapid test was 52.5% sensitive (53/101) and 96.5% specific (387/401) for dengue compared to rRT-PCR. DENV-4 sequences were grouped into two clades within genotype II. No clustering was observed based on dengue severity, location, or date. Sequences obtained here were most closely related to 2018 DENV-4 sequences from Paraguay, followed by a 2013 sequence from southern Brazil. DENV-4 can result in large outbreaks, including severe cases, and is poorly detected with available rapid diagnostics. Outbreak strains seem to have been circulating in Paraguay and Brazil prior to 2018, highlighting the importance of sustained DENV genomic surveillance.

Clinical Evaluation of Pit and Fissure Sealants Placed by Undergraduate Dental Students in 5-15 Years-old Children in Iraq

Abstract Objective: To clinically evaluate the retention and marginal discoloration of pit and fissure sealants applied to primary and permanent teeth. Material and Methods: The study population encompassed of 5-15 years-old children. After consenting, a light-curing sealant was applied to etched pits and fissures of occlusal surfaces of selected sound teeth. The retention rate and marginal discoloration were assessed, 3 months after application of the sealants based on the criteria proposed by Simonsen's criteria (total retention: score 0, partial loss: score 1, and total loss: score 2). Each tooth was considered as an independent sample during analysis. Results: The achieved sample size was 43 children aged 5-15 years (mean age=10.0 years). Therefore, data of 100 teeth from 43 children were used for the final analysis. The percentage of completely retained sealants (59%) was higher than the percentage of partially retained sealants (23%) and completely missing sealants (18%) after 3 months follow up. Out of 100 sealed teeth, 60% were either had marginal discoloration or completely missing. Using the Mann-Whitney test, there was a statistically significant difference (p<0.05) between primary and permanent teeth in terms of retention. However, there was no statistical difference (p>0.05) between upper and lower teeth in terms of retention. Conclusion: The success rate of fissure sealants after 3 months follow-up was satisfactory.

Changes in the Care Setting of First Consults to Palliative and Supportive Care Over a Seven-Year Period.

CONTEXT: Optimal benefits from palliative care (PC) are achieved when first consults (PC1) occur early, in the outpatient setting. Late PC1, like those in the intensive care unit (ICU), limit these benefits. OBJECTIVES: The objective of this study was to determine the proportion of PC1 over time in the outpatient, ICU, and inpatient non-ICU settings. We also examined patients' baseline characteristics and the timing of PC access (from PC1 to death) by the setting of PC1. METHODS: We retrospectively evaluated consecutive cancer patients' records at our cancer center to ascertain the annual number of PC1 and its distribution across settings (2011-2017). ICU PC1 (n = 309) and a random sample of an equal number of outpatient and inpatient non-ICU PC1 were reviewed to retrieve patients' characteristics and death date. RESULTS: PC1 total annual number increased by 58% from 2011 (n = 2286) to 2017 (n = 3615). We found a significant decrease in the proportion of ICU PC1 (from 2.3% in 2011 to 1% in 2017, P < 0.001). There were no significant changes in the proportion of PC1 at outpatient versus inpatient settings (P = 0.2). Hematologic cancer patients were more likely to have an ICU PC1 (P < 0.001). Median survival (months) was 7.7 (6.3-9.7), 3.4 (2.4-4.5), and 0.1 (0.1-0.1) for outpatient, inpatient, and ICU, respectively (P < 0.01). CONCLUSION: PC1 total annual number has increased, and the proportion of PC1 at ICU, a very late clinical setting, is decreasing. Further efforts are needed to integrate PC in hematologic cancer care.

The Perceived Role of Family in Heroin Use Behaviors of Mexican-American Men.

The influence of the family is not well understood as it relates to drug use behaviors of Hispanic male adults. We examined the family's influence on drug use behavior, as perceived by Hispanic men who use heroin. One-time qualitative interviews were conducted with 21 current and former heroin users who participated in a larger study on long-term heroin use in Mexican-American men. Data were analyzed using a thematic analysis approach. Three main themes emerged: family as a supportive environment for heroin use; heroin as a family legacy; and, the family's strategies for helping to stop using heroin. A sub-theme emerged on the paradox of family involvement, which spanned the three main themes. This research lays a foundation for future work to disentangle the risks and benefits of family involvement to inform culturally-centered therapies and cultural adaptations to traditional therapeutic approaches with Mexican-American men who abuse drugs.

Heptanickel(ii) double-cubane core in wells-dawson heteropolytungstate, [Ni7(OH)6(H2O)6(P2W15O56)2](16-).

The hepta-Ni(2+)-containing 30-tungsto-4-phosphate(v) [Ni7(OH)6(H2O)6(P2W15O56)2](16-) (1) has been synthesized in aqueous, slightly basic medium under conventional reaction conditions, and charactarized via different physical methods. Single-crystal XRD showed that 1 consists of a corner-fused double-cubane {Ni7(OH)6(H2O)6}(8+) fragment sandwiched by two trilacunary [P2W15O56](12-) units. Polyanion 1 is solution-stable as shown by (31)P NMR. Ferromagnetic coupling interaction between the 7 paramagnetic centers of the double-cubane core in 1 with a S = 7 ground state was demonstrated. Electrochemical studies were also performed on 1.

"El lado oscuro": "the dark side" of social capital in Mexican American heroin using men.

This article describes social capital in a cohort of 227 Mexican American men who are long-term injection heroin users. Social capital scores for current and former users were similar, suggesting equal absolute values of capital, but associated with illicit activities in current users and with cessation efforts in former users. Stable drug-using relationships provided high negative capital, whereas conventional relationships provided positive capital. Thus, social capital functions dichotomously in positive and negative contextualized roles. This study provides an alternative understanding of the dynamic interactions between individuals, environment, and drug abuse and can inform prevention and treatment interventions for an important demographic group.