Effect of vegetation on cutaneous leishmaniasis in Paraná, Brazil

Melo, Helen Aline; Rossoni, Diogo Francisco; Teodoro, Ueslei

doi:10.1590/0074-02760170505

Cited by 10 publications

(6 citation statements)

References 15 publications

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“…The migration in areas with significant disease incidence, the urban/peri-urban expansion process, land settlements, hunting activities, and military training are some of the conditions that may adversely affect the occurrence of CL human cases (Melo et al, 2018). We found that the cutaneous form of leishmaniasis prevailed in the last years in Caxias, representing almost the total number of those infected.…”

Section: Discussionmentioning

confidence: 76%

Clinical, epidemiological and climatic factors related to the occurrence of cutaneous leishmaniasis in an endemic area in northeastern Brazil

et al. 2021

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Cutaneous leishmaniasis (CL) is a neglected tropical disease with a wide distribution in the Americas. Brazil is an endemic country and present cases in all states. This study aimed to describe the occurrence, the underlying clinical and epidemiological factors, and the correlation of climatic variables with the frequency of reported CL cases in the municipality of Caxias, state of Maranhão, Brazil. This is a retrospective and descriptive epidemiological study based on data extracted from the Brazilian Information System of Diseases Notification, from 2007 to 2017. Maximum and minimum temperature, precipitation, and relative air humidity data were provided by the Brazilian National Institute of Meteorology. A total of 201 reported autochthonous CL cases were analyzed. The predominance of cases was observed in males (70.1%). The age range between 31 and 60 years old was the most affected, with 96 cases (47.9%). Of the total number of registered cases, 38.8% of the affected individuals were engaged in agriculture-related activities. The georeferenced distribution revealed the heterogeneity of disease occurrence, with cases concentrated in the Western and Southern regions of the municipality. An association was detected between relative air humidity (monthly mean) and the number of CL cases per month (p = 0.04). CL continues to be a concerning public health issue in Caxias. In this context, there is a pressing need to strengthen measures of prevention and control of the disease through the network of health services of the municipality, considering local and regional particularities.

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Section: Discussionmentioning

confidence: 76%

Clinical, epidemiological and climatic factors related to the occurrence of cutaneous leishmaniasis in an endemic area in northeastern Brazil

et al. 2021

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“…In addition to the females consuming blood, both male and female sand flies regularly ingest plant-derived sugar meals as a source of energy. Because of the dependence of sand flies on plant meals, the structure of plant communities can affect the spatial and temporal distribution of sand fly populations (4). Moreover, certain plants upon which sand flies feed can shorten their life or reduce their capacity for transmitting leishmaniasis (5,6).…”

mentioning

confidence: 99%

Plant-feeding phlebotomine sand flies, vectors of leishmaniasis, prefer Cannabis sativa

Abbasi

Queiroz

Kirstein

et al. 2018

Proc. Natl. Acad. Sci. U.S.A.

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Blood-sucking phlebotomine sand flies (Diptera: Psychodidae) transmit leishmaniasis as well as arboviral diseases and bartonellosis. Sand fly females become infected with Leishmania parasites and transmit them while imbibing vertebrates’ blood, required as a source of protein for maturation of eggs. In addition, both females and males consume plant-derived sugar meals as a source of energy. Plant meals may comprise sugary solutions such as nectar or honeydew (secreted by plant-sucking homopteran insects), as well as phloem sap that sand flies obtain by piercing leaves and stems with their needle-like mouthparts. Hence, the structure of plant communities can influence the distribution and epidemiology of leishmaniasis. We designed a next-generation sequencing (NGS)–based assay for determining the source of sand fly plant meals, based upon the chloroplast DNA gene ribulose bisphosphate carboxylase large chain (rbcL). Here, we report on the predilection of several sand fly species, vectors of leishmaniasis in different parts of the world, for feeding on Cannabis sativa. We infer this preference based on the substantial percentage of sand flies that had fed on C. sativa plants despite the apparent “absence” of these plants from most of the field sites. We discuss the conceivable implications of the affinity of sand flies for C. sativa on their vectorial capacity for Leishmania and the putative exploitation of their attraction to C. sativa for the control of sand fly-borne diseases.

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“…Only two studies about leprosy were included, both conducted in Brazil regarding its epidemiology in Paraná State [58] and Foz do Iguaçú [30], despite leprosy being present in the three countries and a wellknown prevalent disease in Misiones, Paraná and Foz do Iguaçú [10,16,-58]. Overall, the five epidemiological studies included were related with past diseases outbreaks, namely two about leishmaniasis in Paraná [29] and Puerto Iguazú [55], one about dengue in Paraná [53] and the two about leprosy in Paraná [58] and Foz do Iguaçú [30].…”

Section: Resultsmentioning

confidence: 99%

Are the neglected tropical diseases under control in the tri-border region between Brazil, Argentina, and Paraguay?

Oliveira

Arcêncio

Arcoverde

et al. 2022

J Infect Dev Ctries

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Introduction: Implementation of prevention and control measures for communicable diseases in border regions can be challenging and lead to inefficient attempts to control them. We describe evidences on the strengths, weaknesses, opportunities and challenges regarding implementation of health interventions for control, prevention and treatment of selected neglected tropical diseases (NTD), a group of transmissible diseases typically prevalent in tropical countries and vulnerable populations, in the tri-border between Brazil, Argentina, and Paraguay. Methodology: A systematic literature review of observational and experimental studies was conducted, using PubMed and Bireme databases. Eligibility criteria were location (tri-border area) and subject (health interventions). Results: Of a total of 595 references identified, 34 studies were included (18 pertaining to leishmaniasis, 11 to dengue, 2 to leprosy, 2 to soil-transmitted helminthiases and 1 to Chagas’ disease), with an inclusion rate of 6.4%. The main strengths were the similarity of health interventions between countries and easiness of mobility and communication flows. The main weaknesses were access to rural areas and discrepancies in the number of studies between countries. As for opportunities, we identified increased tourism, economic development and recent increasing research in this field. The main challenges were the absence of studies regarding other prevalent NTD in the region and movement of goods, animals and people across borders. Conclusions: Although epidemiological studies are still needed to better understand and assess the prevalence of NTD in the area, mainly in Paraguay, these findings can inform decision-makers and health managers to plan a common strategy to address NTD.

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Effect of vegetation on cutaneous leishmaniasis in Paraná, Brazil

Cited by 10 publications

References 15 publications

Clinical, epidemiological and climatic factors related to the occurrence of cutaneous leishmaniasis in an endemic area in northeastern Brazil

Clinical, epidemiological and climatic factors related to the occurrence of cutaneous leishmaniasis in an endemic area in northeastern Brazil

Plant-feeding phlebotomine sand flies, vectors of leishmaniasis, prefer Cannabis sativa

Are the neglected tropical diseases under control in the tri-border region between Brazil, Argentina, and Paraguay?

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