Predictions of Future Geographical Distribution of Two Vectors of American Trypanosomiasis: Implications for Endemic Chagas disease in Texas, USA

It is known that climate has a direct effect on vectorborne and zoonotic diseases, and in the face of climate change, understanding this link has become more urgent. Many such vector-borne diseases primarily afflict impoverished populations and have therefore been previously understudied. One major focus of our research is to understand the influence that climate has on the distribution of disease causing microorganisms and their vectors, especially those in relation to American trypanosomiasis (Chagas disease). Chagas disease is caused by the hemoflagellate protozoan parasite, Trypanosoma cruzi. For this study, we hypothesized that the increasing prevalence Chagas in the state of Texas is due to expanding distributions of vectors. To test this hypothesis, historical data on vector distribution and climate was used to determine the probable locations of prevalent vectors in Texas. Predictions for the future distributions were made using environmental niche models for bioclimatic variables with a maximum entropy algorithm. Of the two Triatominae species studied, the range and concentration of both decreased under a global warming scenario, a finding that is consistent with the current research of risk of Chagas disease in Venezuela. In future, this same procedure will be used on more Chagas vectors to better understand if there is a northward shift for vectors, or if Texas is becoming more inhospitable to all vectors of Chagas.

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Ecosystem approaches to controlling of vector-borne diseases: dengue and Chagas disease

Cadernos de Saúde Pública ◽

10.1590/s0102-311x2009001300001 ◽

2009 ◽

Vol 25 (suppl 1) ◽

pp. S4-S4 ◽

Cited By ~ 1

Author(s):

Maria Glória Teixeira ◽

Ana Boischio ◽

Maria da Conceição N. Costa

Keyword(s):

Chagas Disease ◽

Vector Borne Diseases ◽

Vector Borne ◽

Ecosystem Approaches

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POTENSI TRIATOMA SP DALAM PENYEBARAN PENYAKIT TULAR VEKTOR EMERGING DI INDONESIA

Vektora Jurnal Vektor dan Reservoir Penyakit ◽

10.22435/vk.v11i2.1230 ◽

2019 ◽

Vol 11 (2) ◽

pp. 131-138

Author(s):

Risqa Novita

Keyword(s):

Allergic Reaction ◽

Southeast Asia ◽

Chagas Disease ◽

Early Warning System ◽

Warning System ◽

Emerging Diseases ◽

Laboratory Research ◽

Tropical Country ◽

Vector Borne Diseases ◽

Vector Borne

The era of globalization allows migration fastly, so we do not have boundary of a country. This led to an increase of the infectious diseases. Indonesia also have an impact on this globalization by highly migration. Indonesia is a tropical country and has diversity of vectors that can transmit various tropical diseases. One of a vector which transmitted vector borne diseases is a bug Triatoma. Triatoma lives near the people’s house and in the bed. One of the species of Triatoma which found in indonesia is Triatoma rubrifasciata which is vector of Chagas disease and Leprosy and can cause allergic reaction of the skin after the bite. Triatoma infection in Southeast Asia, including in Indonesia has not been widely reported. This condition should make us to be alert on the disease emerging or re emerging diseases that can be caused by Triatoma . This article aims to study Triatoma as a vector of emerging and potentially re emerging diseases in Indonesia, which are Chagas, skin allergic reaction after bite and Leprosy. Methods. Literature review by look in google scholar and pubmed, by search using keywords: emerging parasitic, vector borne diseases, Triatoma in Southeast Asia. Inclusion criterias are research articles, laboratory research, case report, and systematic surveillance. Based on the literatures, tracing data that Indonesia has a chance to be the cases of Chagas disease, Skin allergic reaction of Triatoma and Leprosy. It is supposed to made the vigilance on make a early warning system, so our public health coud be achieved highest.

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Recent trends in global insecticide use for disease vector control and potential implications for resistance management

Scientific Reports ◽

10.1038/s41598-021-03367-9 ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

Henk van den Berg ◽

Haroldo Sergio da Silva Bezerra ◽

Samira Al-Eryani ◽

Emmanuel Chanda ◽

Bhupender N. Nagpal ◽

...

Keyword(s):

Insecticide Resistance ◽

Vector Control ◽

Chagas Disease ◽

Pyrethroid Resistance ◽

Resistance Management ◽

Insecticide Treated Nets ◽

Vector Borne Diseases ◽

Control Programs ◽

Disease Vector ◽

Vector Borne

AbstractInsecticides have played a major role in the prevention, control, and elimination of vector-borne diseases, but insecticide resistance threatens the efficacy of available vector control tools. A global survey was conducted to investigate vector control insecticide use from 2010 to 2019. Out of 140 countries selected as sample for the study, 87 countries responded. Also, data on ex-factory deliveries of insecticide-treated nets (ITNs) were analyzed. Insecticide operational use was highest for control of malaria, followed by dengue, leishmaniasis and Chagas disease. Vector control relied on few insecticide classes with pyrethroids the most used overall. Results indicated that IRS programs have been slow to react to detection of pyrethroid resistance, while proactive resistance management using insecticides with unrelated modes of action was generally weak. The intensive use of recently introduced insecticide products raised concern about product stewardship regarding the preservation of insecticide susceptibility in vector populations. Resistance management was weakest for control of dengue, leishmaniasis or Chagas disease. Therefore, it will be vital that vector control programs coordinate on insecticide procurement, planning, implementation, resistance monitoring, and capacity building. Moreover, increased consideration should be given to alternative vector control tools that prevent the development of insecticide resistance.

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Management of the use of public health pesticides in the face of the increasing burden of vector-borne diseases in the Eastern Mediterranean Region

Eastern Mediterranean Health Journal ◽

10.26719/2012.18.1.70 ◽

2012 ◽

pp. 70-76 ◽

Cited By ~ 1

Author(s):

A. Mnzava ◽

M. Zaim ◽

R.S. Yadav ◽

S. Elkhalifa ◽

J. Mahjour ◽

...

Keyword(s):

Public Health ◽

Mediterranean Region ◽

Eastern Mediterranean ◽

Eastern Mediterranean Region ◽

Vector Borne Diseases ◽

The Face ◽

Vector Borne

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Decoys and dilution: the impact of incompetent hosts on prevalence of Chagas disease

10.1101/597708 ◽

2019 ◽

Cited By ~ 1

Author(s):

Mondal Hasan Zahid ◽

Christopher M. Kribs

Keyword(s):

Chagas Disease ◽

Disease Transmission ◽

Birth Rate ◽

Parasite Prevalence ◽

Human Infection ◽

Vector Borne Diseases ◽

Intermediate Distance ◽

Vector Borne ◽

Reduce Risk ◽

The Impact

AbstractBiodiversity is commonly believed to reduce risk of vector-borne zoonoses. However, researchers already showed that the effect of biodiversity on disease transmission is not that straightforward. This study focuses on the effect of biodiversity, specifically on the effect of the decoy process (additional hosts distracting vectors from their focal host), on reducing infections of vector-borne diseases in humans. Here, we consider the specific case of Chagas disease and use mathematical population models to observe the impact on human infection of the proximity of chickens, which are incompetent hosts for the parasite but serve as a preferred food source for vectors. We consider three cases as the distance between the two host populations varies: short (when farmers bring chickens inside the home to protect them from predators), intermediate (close enough for vectors with one host to detect the presence of the other host type), and far (separate enclosed buildings such as a home and hen-house). Our analysis shows that the presence of chickens reduces parasite prevalence in humans only at an intermediate distance under the condition that the vector birth rate from feeding on chickens is sufficiently low.

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Experimental Vaccines against Chagas Disease: A Journey through History

Journal of Immunology Research ◽

10.1155/2015/489758 ◽

2015 ◽

Vol 2015 ◽

pp. 1-8 ◽

Cited By ~ 28

Author(s):

Olivia Rodríguez-Morales ◽

Víctor Monteón-Padilla ◽

Silvia C. Carrillo-Sánchez ◽

Martha Rios-Castro ◽

Mariana Martínez-Cruz ◽

...

Keyword(s):

Primary Prevention ◽

Chagas Disease ◽

Latin American ◽

Protozoan Parasite ◽

Immune Protection ◽

Transmission Control ◽

American Trypanosomiasis ◽

Control Programs ◽

Primary Prevention Strategy ◽

Latin American Countries

Chagas disease, or American trypanosomiasis, which is caused by the protozoan parasiteTrypanosoma cruzi, is primarily a vector disease endemic in 21 Latin American countries, including Mexico. Although many vector control programs have been implemented,T. cruzihas not been eradicated. The development of an anti-T. cruzivaccine for prophylactic and therapeutic purposes may significantly contribute to the transmission control of Chagas disease. Immune protection against experimental infection withT. cruzihas been studied since the second decade of the last century, and many types of immunogens have been used subsequently, such as killed or attenuated parasites and new DNA vaccines. This primary prevention strategy appears feasible, effective, safe, and inexpensive, although problems remain. The objective of this review is to summarize the research efforts about the development of vaccines against Chagas disease worldwide. A thorough literature review was conducted by searching PubMed with the terms “Chagas disease” and “American trypanosomiasis” together with “vaccines” or “immunization”. In addition, reports and journals not cited in PubMed were identified. Publications in English, Spanish, and Portuguese were reviewed.

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The spatial reproduction number in a cellular automaton model for vector-borne diseases applied to the transmission of Chagas disease

SIMULATION ◽

10.1177/0037549715626520 ◽

2016 ◽

Vol 92 (2) ◽

pp. 141-152 ◽

Cited By ~ 1

Author(s):

Baki Cissé ◽

Samira El Yacoubi ◽

Sébastien Gourbière

Keyword(s):

Cellular Automaton ◽

Chagas Disease ◽

Reproduction Number ◽

Cellular Automaton Model ◽

Vector Borne Diseases ◽

Vector Borne

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Chromatic and Morphological Differentiation of Triatoma dimidiata (Hemiptera: Reduviidae) with Land Use Diversity in El Salvador

Pathogens ◽

10.3390/pathogens10060753 ◽

2021 ◽

Vol 10 (6) ◽

pp. 753

Author(s):

Víctor D. Carmona-Galindo ◽

Claire C. Sheppard ◽

Madelyn L. Bastin ◽

Megan R. Kehrig ◽

Maria F. Marín-Recinos ◽

...

Keyword(s):

Land Use ◽

El Salvador ◽

Chagas Disease ◽

Green Space ◽

Morphological Differentiation ◽

Mitigation Strategies ◽

Vector Borne Diseases ◽

Land Use Types ◽

Vector Borne ◽

Change Mitigation

Chagas disease is caused by the parasite Trypanosoma cruzi, which is transmitted by insect-vectors in the taxonomic subfamily Triatominae and affects approximately 8,000,000 people world-wide. Current mitigation strategies for Chagas focus on insecticides, infrastructure improvements, and management of symptoms, which are largely unsustainable in underserved communities where the disease is widespread. Transmission patterns of vector-borne diseases are known to adaptively respond to habitat change; as such, the objective of our study was to evaluate how the physical characteristics of Triatoma dimidiata would vary in relation to land use in El Salvador. We hypothesized that the color and morphology of T. dimidiata would change with municipal levels of urban and natural green space, natural green space, and agricultural space, as well as municipal diversity, richness, and evenness of land use types. Our results characterize how T. dimidiata color and morphology vary directly with anthropogenic changes to natural and agricultural environments, which are reflective of a highly adaptable population primed to respond to environmental change. Mitigation studies of Chagas disease should exploit the relationships between anthropogenic land use and T. dimidiata morphology to evaluate how the transmission pattern of T. cruzi and Chagas disease symptomology are impacted.

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