The Impact of Environmental and Anthropogenic Factors on the Transmission Dynamics of Vector Borne Diseases

2019 ◽  
pp. 609-613
Author(s):  
Layla Kamareddine
Keyword(s):  
Transmission Dynamics ◽  
Anthropogenic Factors ◽  
Vector Borne Diseases ◽  
Vector Borne ◽  
The Impact

scholarly journals Analyzing the Effects of Temperature and Human Movement on Malaria Disease Transmission Dynamics

2020 ◽  
Author(s):  
Ganga Ram Phaijoo
Keyword(s):  
Disease Transmission ◽  
Human Movement ◽  
Transmission Dynamics ◽  
Vector Borne Diseases ◽  
Movement Rates ◽  
Anopheles Mosquitoes ◽  
Vector Borne ◽  
Temperature Levels ◽  
Global And Local ◽  
The Impact

Abstract Background: Malaria disease is transmitted by the bite of Anopheles mosquitoes. Plasmodium parasites are responsible for the disease. Due to human movement from one place to the other, vector borne diseases like malaria are spreading rapidly throughout the world. They have become major causes of morbidity and mortality worldwide. Changing temperature levels has significant impact on the life cycle, biting behavior and death rates of the mosquitoes which can transmit the disease.Methods: A multi patch SEIRS - SEI deterministic compartmental model for malaria disease is developed to study the disease transmission dynamics. The impact of temperature and human movement in transmission dynamics is investigated. Both global and local basic reproduction numbers are computed for two patches in two patch setting.Results: Disease free equilibrium is locally stable when the basic reproduction number is less than unity and unstable when the number is greater than unity. Numerical results show that the prevalence of the disease changes with the change in human movement rates between the patches; temperature affects the transmission dynamics of malaria disease.Conclusion: The burden of malaria disease can be reduced by managing the host movement between low and high disease prevalent patches. The optimal temperature for malaria disease transmission is 25 °C.

scholarly journals THE IMPACT OF GLOBAL WARMING ON THE PUBLIC HEALTH INCREASING THE BACTERIAL CAUSING INFECTIOUS DISEASES PERFORMED BY EXPERIMENT: VECTOR-BORNE DISEASES INSECTS, TAIF, KSA

2017 ◽  
Vol 5 (5) ◽  
pp. 42-53
Author(s):  
Sherifa Mostafa M. Sabra ◽  
Samar Ahamed
Keyword(s):  
Public Health ◽  
Global Warming ◽  
Infectious Diseases ◽  
Vector Borne Diseases ◽  
The Public ◽  
Colony Forming Unit ◽  
Tapinoma Sessile ◽  
Vector Borne ◽  
The Mean ◽  
The Impact

The search conducted on "The impact of global warming (GW) on the public health (PH) increasing the bacterial causing infectious diseases (IDs) performed by experiment: Vector-borne diseases (VBDs) insects, Taif, KSA", the experiment used ants (Taif Tapinoma sessile), prepared, arranged appropriate nests and adjusted the temperature at (20, 25, 30, 35, 40 and 45°C), for a week of each zone. It revealed the behaviour as (normal, semi-normal and ab-normal), the mean of mortality rates were between (0-53.3%). The bacterial contents measured by the turbidity indicated the presence of multiplication, were between (0.109-0.328). The bacterial growth degrees by sings were between (+ - +++++) and percent between (12-100%). Colony Forming Unit/ml (CFU/ml) confined between (1.8X102-15.0X102)/mL. Through this experiment it turned out the GW had a significant role on the PH, helped the proliferation of bacterial pathogens that caused IDS. The conclusion wiped from the experiment that the extent degrees of GW disadvantages on the PH. The PH workers must take the "Preventive Health Prophylaxis Measures" (PHPMs) to protect the individuals from IDs by eliminating the VBDs of various types, monitoring the immunological situation of individuals, provided the vaccinations of IDs and preparing for complete PHPMs against any changes in the PH.

Waterborne Diseases and Climate Change: Impact and Implications

2018 ◽  
pp. 469-484
Author(s):  
Maha Bouzid
Keyword(s):  
Climate Change ◽  
Developing Countries ◽  
Disease Transmission ◽  
Waterborne Diseases ◽  
Vector Borne Diseases ◽  
Significant Burden ◽  
Change Impact ◽  
Vector Borne ◽  
The Impact ◽  
Adaptation Options

Waterborne diseases are caused by a multitude of pathogens and associated with a significant burden in both developed and developing countries. While the assessment of the adverse impacts of climate change on human heath from infectious diseases has mainly focused on vector-borne diseases, waterborne diseases prevalence and transmission patterns are also likely to be impacted by environmental change. This chapter will outline relevant waterborne pathogens, summarise the impact of climate change on disease transmission and explore climate change adaptation options in order to reduce the increased burden of waterborne diseases.

How to model the impact of climate change on vector-borne diseases?

2021 ◽  
pp. 26-31
Author(s):  
Cyril Caminade
Keyword(s):  
Climate Change ◽  
Risk Assessment ◽  
Mathematical Models ◽  
Future Climate ◽  
Future Climate Change ◽  
Climate Change Risk ◽  
Vector Borne Diseases ◽  
Impact Of Climate Change ◽  
Vector Borne ◽  
The Impact

Abstract This expert opinion provides an overview of mathematical models that have been used to assess the impact of climate change on ticks and tick-borne diseases, ways forward in terms of improving models for the recent context and broad guidelines for conducting future climate change risk assessment.

Waterborne Diseases and Climate Change

2017 ◽  
pp. 1041-1055
Author(s):  
Maha Bouzid
Keyword(s):  
Climate Change ◽  
Developing Countries ◽  
Disease Transmission ◽  
Waterborne Diseases ◽  
Waterborne Pathogens ◽  
Vector Borne Diseases ◽  
Significant Burden ◽  
Vector Borne ◽  
The Impact ◽  
Adaptation Options

Waterborne diseases are caused by a multitude of pathogens and associated with a significant burden in both developed and developing countries. While the assessment of the adverse impacts of climate change on human heath from infectious diseases has mainly focused on vector-borne diseases, waterborne diseases prevalence and transmission patterns are also likely to be impacted by environmental change. This chapter will outline relevant waterborne pathogens, summarise the impact of climate change on disease transmission and explore climate change adaptation options in order to reduce the increased burden of waterborne diseases.

scholarly journals Narrative Review on Health-EDRM Primary Prevention Measures for Vector-Borne Diseases

2020 ◽  
Vol 17 (16) ◽  
pp. 5981 ◽  
Author(s):  
Emily Chan ◽  
Tiffany Sham ◽  
Tayyab Shahzada ◽  
Caroline Dubois ◽  
Zhe Huang ◽  
...  
Keyword(s):  
Primary Prevention ◽  
Keyword Search ◽  
Risk Mitigation ◽  
World Health ◽  
Limiting Factors ◽  
Prevention Measures ◽  
Vector Borne Diseases ◽  
Vector Borne ◽  
Health Organization ◽  
The Impact

Climate change is expanding the global at-risk population for vector-borne diseases (VBDs). The World Health Organization (WHO) health emergency and disaster risk management (health-EDRM) framework emphasises the importance of primary prevention of biological hazards and its value in protecting against VBDs. The framework encourages stakeholder coordination and information sharing, though there is still a need to reinforce prevention and recovery within disaster management. This keyword-search based narrative literature review searched databases PubMed, Google Scholar, Embase and Medline between January 2000 and May 2020, and identified 134 publications. In total, 10 health-EDRM primary prevention measures are summarised at three levels (personal, environmental and household). Enabling factor, limiting factors, co-benefits and strength of evidence were identified. Current studies on primary prevention measures for VBDs focus on health risk-reduction, with minimal evaluation of actual disease reduction. Although prevention against mosquito-borne diseases, notably malaria, has been well-studied, research on other vectors and VBDs remains limited. Other gaps included the limited evidence pertaining to prevention in resource-poor settings and the efficacy of alternatives, discrepancies amongst agencies’ recommendations, and limited studies on the impact of technological advancements and habitat change on VBD prevalence. Health-EDRM primary prevention measures for VBDs require high-priority research to facilitate multifaceted, multi-sectoral, coordinated responses that will enable effective risk mitigation.

Effects of climate change on vector-borne diseases: an updated focus on West Nile virus in humans

2019 ◽  
Vol 3 (2) ◽  
pp. 143-152 ◽  
Author(s):  
Shlomit Paz
Keyword(s):  
Climate Change ◽  
West Nile Virus ◽  
The West ◽  
West Nile ◽  
Local Conditions ◽  
Transmission Season ◽  
Vector Borne Diseases ◽  
Vector Borne ◽  
The Impact ◽  
Impacts Of Climate Change

Abstract One of the main impacts of climate change on health is the influence on vector-borne diseases (VBDs). During the last few years, yearly outbreaks of the West Nile virus (WNV) have occurred in many locations, providing evidence of ongoing transmission. Currently, it is the most widely distributed arbovirus in the world. Increases in ambient temperature have impacts on WNV transmission. Indeed, clear associations were found between warm conditions and WNV outbreaks in various areas. The impact of changes in rainfall patterns on the incidence of the disease is influenced by the amount of precipitation (increased rainfall, floods or droughts), depending on the local conditions and the differences in the ecology and sensitivity of the species of mosquito. Predictions indicate that for WNV, increased warming will result in latitudinal and altitudinal expansions of regions climatically suitable for transmission, particularly along the current edges of its transmission areas. Extension of the transmission season is also predicted. As models show that the current climate change trends are expected to continue, it is important to reinforce WNV control efforts and increase the resilience of population health. For a better preparedness, any assessment of future transmission of WNV should consider the impacts of the changing climate.

scholarly journals Rapid ageing and species identification of natural mosquitoes for malaria surveillance

2020 ◽  
Author(s):  
Doreen J. Siria ◽  
Roger Sanou ◽  
Joshua Mitton ◽  
Emmanuel P. Mwanga ◽  
Abdoulaye Niang ◽  
...  
Keyword(s):  
Mosquito Species ◽  
Natural Populations ◽  
Cost Effective ◽  
Malaria Vectors ◽  
Sampling Effort ◽  
Malaria Surveillance ◽  
Vector Borne Diseases ◽  
Vector Borne ◽  
Species Specific ◽  
The Impact

AbstractThe malaria parasite, which is transmitted by several Anopheles mosquito species, requires more time to reach its human-transmissible stage than the average lifespan of a mosquito. Monitoring the species-specific age structure of mosquito populations is critical to evaluating the impact of vector control interventions on malaria risk. We developed a rapid, cost-effective surveillance method based on deep learning of mid-infrared spectra of mosquitoes’ cuticle that simultaneously identifies the species and the age of three main malaria vectors, in natural populations. Using over 40,000 ecologically and genetically diverse females, we could speciate and age grade An. gambiae, An. arabiensis, and An. coluzzii with up to 95% accuracy. Further, our model learned the age of new populations with minimal sampling effort and detected the impact of control interventions on simulated mosquito populations, measured as a shift in their age structures. We anticipate our method to be applied to other arthropod vector-borne diseases.

scholarly journals Modeling the propagation of the Dengue, Zika and Chikungunya virus in the city of Bello using Agent-Based Modeling and Simulation

2021 ◽  
Author(s):  
Rafael Mateus Carrion ◽  
Susana Alvarez Zuluaga ◽  
Mariajose Franco Orozco ◽  
Paula Alejandra Escudero Marín
Keyword(s):  
Computational Cost ◽  
Simulation Models ◽  
Transmission Dynamics ◽  
Agent Based ◽  
Vector Borne Diseases ◽  
Ode Models ◽  
Vector Borne ◽  
Future Work ◽  
The City ◽  
High Computational Cost

Agent-Based Models (ABM) have become a very useful tool to simulate the propagation of infectious diseases. To enhance the scope of these simulation models, some authors have combined ABMs with ODE models which are called Hybrid ABMs, and allows the simulation of models that demand a very high computational cost. In the present project, the main approach is to develop hybrid ABMs to understand the transmission dynamics of vector-borne diseases such as Dengue, Zika, and Chikungunya considering some geospatial characteristics of the city of Bello, Colombia. Some assumptions were considered to develop the computational model to understand and verify if the transmission dynamics were happening according to their theoretical behavior. The results obtained were satisfactory, and for future work, the idea is to integrate more components and make the model more realistic.

scholarly journals Survey of protozoan vector-borne diseases in dogs from Atlantic Rainforest fragment around Billings Dam, São Paulo, Brazil

2020 ◽  
Vol 50 (9) ◽  
Author(s):  
Roberta Carvalho de Freitas e Azevedo ◽  
Giovanna Stefani Nosberto Castelli ◽  
Ryan Emiliano da Silva ◽  
Jaciara de Oliveira Jorge Costa ◽  
Renata Tonhosolo ◽  
...  
Keyword(s):  
Animal Health ◽  
Companion Animals ◽  
Sao Paulo ◽  
Control Measures ◽  
Molecular Diagnostic ◽  
São Paulo ◽  
Vector Borne Diseases ◽  
Babesia Vogeli ◽  
Vector Borne ◽  
The Impact

ABSTRACT: Vector-borne diseases are currently one of the biggest public health concerns worldwide. Dogs, being the closest companion animals to humans, are considered the main reservoir of some of these diseases in the urban environment. Therefore, the study of the disease behavior in dogs can help to understand the disease affecting human health. Serological and molecular diagnoses of Babesia vogeli, Rangelia vitalli, Leishmania infantum, and other trypanosomatids, were performed by immunochromatographic and PCR assays, respectively, on dogs in a dog shelter located in an Atlantic Forest fragment near the Billings Dam, São Bernardo do Campo, São Paulo-Brazil. Our molecular diagnostic results showed a high prevalence of Babesia vogeli, at 20.9% (17/81). No other protozoan was detected in any of the tests. Determining the prevalence of major vector-borne diseases is essential to establish preventive and control measures for zoonotic diseases in animals kept in shelters, in order to minimize the impact of vector-borne diseases on animal health.

Sign in / Sign up

Export Citation Format

Share Document