scholarly journals Long-term impact of a ten-year intervention program on human and canine Trypanosoma cruzi infection in the Argentine Chaco

2021 ◽  
Vol 15 (5) ◽  
pp. e0009389
Author(s):  
Marta Victoria Cardinal ◽  
Gustavo Fabián Enriquez ◽  
Natalia Paula Macchiaverna ◽  
Hernán Darío Argibay ◽  
María del Pilar Fernández ◽  
...  

Background Interruption of domestic vector-borne transmission of Trypanosoma cruzi is still an unmet goal in several American countries. In 2007 we launched a long-term intervention program aimed to suppress house infestation with the main domestic vector in southern South America (Triatoma infestans) and domestic transmission in Pampa del Indio, a resource-constrained, hyperendemic municipality with 1446 rural houses inhabited by Creole and indigenous people, in the Argentine Chaco ecoregion. Here, we assessed whether the 10-year insecticide-based program combined with community mobilization blocked vector-borne domestic transmission of T. cruzi to humans and dogs. Methods We carried out two municipality-wide, cross-sectional serosurveys of humans and dogs (considered sentinel animals) during 2016–2017 to compare with baseline data. We used a risk-stratified random sampling design to select 273 study houses; 410 people from 180 households and 492 dogs from 151 houses were examined for antibodies to T. cruzi using at least two serological methods. Results The seroprevalence of T. cruzi in children aged <16 years was 2.5% in 2017 (i.e., 4- to 11-fold lower than before interventions). The mean annual force of child infection (λ) sharply decreased from 2.18 to 0.34 per 100 person-years in 2017. One of 102 children born after interventions was seropositive for T. cruzi; he had lifetime residence in an apparently uninfested house, no outside travel history, and his mother was T. cruzi-seropositive. No incident case was detected among 114 seronegative people of all ages re-examined serologically. Dog seroprevalence was 3.05%. Among native dogs, λ in 2016 (1.21 per 100 dog-years) was 5 times lower than at program onset. Six native adult dogs born after interventions and with stable lifetime residence were T. cruzi-seropositive: three had exposure to T. infestans at their houses and one was an incident case. Conclusions These results support the interruption of vector-borne transmission of T. cruzi to humans in rural Pampa del Indio. Congenital transmission was the most likely source of the only seropositive child born after interventions. Residual transmission to dogs was likely related to transient infestations and other transmission routes. Sustained vector control supplemented with human chemotherapy can lead to a substantial reduction of Chagas disease transmission in the Argentine Chaco.

2015 ◽  
Vol 22 (4) ◽  
pp. 389-394 ◽  
Author(s):  
Arrigo F. G. Cicero ◽  
Maddalena Benelli ◽  
Marco Brancaleoni ◽  
Giuseppe Dainelli ◽  
Desiré Merlini ◽  
...  

2019 ◽  
Vol 28 (e1) ◽  
pp. e77-e84 ◽  
Author(s):  
Victoria M White ◽  
Nicola Guerin ◽  
Tahlia Williams ◽  
Melanie A Wakefield

ObjectiveTo assess the long-term impact of plain packaging (PP) of cigarettes with larger graphic health warnings (HW) introduced in December 2012 on adolescents’ relevant tobacco-related perceptions.MethodsCross-sectional school-based surveys of 12 to 17 year olds in 2011 (n=4413), 2013 (n=4423), 2014 (n=4576) and 2017 (n=4266). Students rated the character of four popular cigarette brands, indicated their agreement regarding brand differences in smoking ease, quitting, addictiveness, harmfulness and pack attractiveness and positive/negative perceptions of pack image. The frequency of students reading, attending to, thinking and talking about HW was assessed. Responses of students seeing cigarette packs in the previous 6 months (2011: 63%; 2013: 67%, 2014: 56%, 2017: 56%) were examined.ResultsSmoking prevalence declined from 2011 to 2017. Among students who had recently seen packs, cigarette packs were rated less positively and more negatively in 2017 than in 2011 (p<0.001) with ratings similar between 2013 and 2017. Positive character ratings for each brand reduced between 2011 and 2013 (ps<0.05) with further reductions between 2013 and 2017 (ps<0.05). Fewer students agreed, and more were uncertain, that brands differed in their smoking ease, addictiveness, harmfulness and pack attractiveness in 2017 than 2011. The frequency of students reading, attending, talking or thinking about HW did not change between 2011 and 2017.ConclusionsPP’s initial impact in reducing adolescent’s positive perceptions of cigarette packs and brand differences continued in the following years with tobacco packaging less appealing to young people in 2017 than 2011 and students more uncertain about brand differences.


2017 ◽  
Vol 39 (5) ◽  
pp. 732-752 ◽  
Author(s):  
Lucía Muñoz-Pascual ◽  
Jesús Galende

Purpose The purpose of this paper is to analyze the influence that two variables related to human resources (HR) have on employee creativity – namely, knowledge management (KM) and motivation management (MM). Design/methodology/approach The linear regression analyses are based on a sample of 306 employees from 11 Spanish companies belonging to three innovative clusters. In addition, “creativity” is considered an antecedent of technological innovation. Findings KM and intrinsic MM are shown to inform creativity, whereas extrinsic MM has no such effect. Practical implications Although this study is based on cross-sectional data, the findings might induce researchers to investigate the effects of other HR variables, such as the types of relations between employees and their long-term impact on creativity. Management should encourage KM and intrinsic MM across employees, as the results indicate that tacit KM, explicit KM and intrinsic MM encourage a positive attitude toward creativity among employees. Originality/value The main contribution is new empirical evidence on the joint influence of aptitudes (KM) and attitudes (MM) on employee creativity. In addition, the study includes a key measure of employee creativity. The evidence reveals the types of KM and MM that encourage or inhibit creative employee behavior. The results show that once employees have reached a medium-high level of extrinsic MM, creativity will be affected solely by intrinsic MM.


PLoS ONE ◽  
2021 ◽  
Vol 16 (9) ◽  
pp. e0257420
Author(s):  
Rhiannon Edge ◽  
Josh Meyers ◽  
Gabriella Tiernan ◽  
Zhicheng Li ◽  
Alexandra Schiavuzzi ◽  
...  

The COVID-19 pandemic has dramatically impacted cancer care worldwide. Disruptions have been seen across all facets of care. While the long-term impact of COVID-19 remains unclear, the immediate impacts on patients, their carers and the healthcare workforce are increasingly evident. This study describes disruptions and reorganisation of cancer services in Australia since the onset of COVID-19, from the perspectives of people affected by cancer and healthcare workers. Two separate online cross-sectional surveys were completed by: a) cancer patients, survivors, carers, family members or friends (n = 852) and b) healthcare workers (n = 150). Descriptive analyses of quantitative survey data were conducted, followed by inductive thematic content analyses of qualitative survey responses relating to cancer care disruption and perceptions of telehealth. Overall, 42% of cancer patients and survivors reported experiencing some level of care disruption. A further 43% of healthcare workers reported atypical delays in delivering cancer care, and 50% agreed that patient access to research and clinical trials had been reduced. Almost three quarters (73%) of patients and carers reported using telehealth following the onset of COVID-19, with high overall satisfaction. However, gaps were identified in provision of psychological support and 20% of participants reported that they were unlikely to use telehealth again. The reorganisation of cancer care increased the psychological and practical burden on carers, with hospital visitation restrictions and appointment changes reducing their ability to provide essential support. COVID-19 has exacerbated a stressful and uncertain time for people affected by cancer and healthcare workers. Service reconfiguration and the adoption of telehealth have been essential adaptations for the pandemic response, offering long-term value. However, our findings highlight the need to better integrate psychosocial support and the important role of carers into evolving pandemic response measures. Learnings from this study could inform service improvements that would benefit patients and carers longer-term.


2015 ◽  
Vol 12 (102) ◽  
pp. 20141089 ◽  
Author(s):  
Lijun Sun ◽  
Jian Gang Jin ◽  
Kay W. Axhausen ◽  
Der-Horng Lee ◽  
Manuel Cebrian

Understanding the long-term impact that changes in a city's transportation infrastructure have on its spatial interactions remains a challenge. The difficulty arises from the fact that the real impact may not be revealed in static or aggregated mobility measures, as these are remarkably robust to perturbations. More generally, the lack of longitudinal, cross-sectional data demonstrating the evolution of spatial interactions at a meaningful urban scale also hinders us from evaluating the sensitivity of movement indicators, limiting our capacity to understand the evolution of urban mobility in depth. Using very large mobility records distributed over 3 years, we quantify the impact of the completion of a metro line extension: the Circle Line (CCL) in Singapore. We find that the commonly used movement indicators are almost identical before and after the project was completed. However, in comparing the temporal community structure across years, we do observe significant differences in the spatial reorganization of the affected geographical areas. The completion of CCL enables travellers to re-identify their desired destinations collectively with lower transport cost, making the community structure more consistent. These changes in locality are dynamic and characterized over short timescales, offering us a different approach to identify and analyse the long-term impact of new infrastructures on cities and their evolution dynamics.


2017 ◽  
Vol 43 (4) ◽  
pp. 579-607 ◽  
Author(s):  
Todd D. Woodruff

The U.S. military spends millions of dollars and substantial institutional effort to understand enlistment motives and appropriately target incentives, recruiting effort, and marketing to prospective members. Similarly, researchers have worked for decades to identify, understand, and conceptualize enlistment motives. Much less effort has been made to understand the effect enlistment motives/goals have on individuals after they join. This research uses well-established enlistment motives/goals to identify and understand their effects on soldiers’ value to the military in terms of organizational identification and critical discretionary behaviors. Using multicohort cross-sectional data from future, initial training, and currently serving soldiers, this research finds that intrinsic enlistment motives/goals, such as altruistic service and self-enhancement, create greater relational and behavioral value than most extrinsic/economic enlistment motives/goals such as pay, gaining skills for future employment, and educational funding. Intrinsic enlistment motives/goals have a strong positive effect on perceptions of the organization, social satisfaction, organizational identification, and discretionary pro-organizational behaviors. Conversely, economic enlistment goals tend to be associated with higher levels of economic satisfaction but decreased organizational identification and pro-organizational behavior. Importantly, these effects tend to persist among soldiers who have been in the military for years. Contrary to the institutional–occupational framework, self-focused enlistment goals, both intrinsic and extrinsic, can creative substantial value for the military when they are aligned with organizational interests. Based on these findings, the practice of using enlistment motives/goals to maximizing enlistment without considering their long-term impact on relationship quality and behavior appears myopic and may fail to maximize long-term value for the military.


2021 ◽  
pp. 114243
Author(s):  
Gellan K. Ahmed ◽  
Eman M Khedr ◽  
Dina A. Hamad ◽  
Taghreed S. Meshref ◽  
Mustafa M. Hashem ◽  
...  

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