Breaking News
November 17, 2018 - Sexuality education before age 18 may reduce risk of sexual assault in college
November 17, 2018 - Lab Innovations 2018 confirmed as a major hit with visitors, exhibitors and speakers
November 17, 2018 - Largest parasitic worm genetic study hatches novel treatment possibilities
November 17, 2018 - People with rare cancers can benefit from genomic profiling, shows research
November 17, 2018 - NIH awards over $1.8 million to husband-and-wife doctors to test new breast cancer approach
November 17, 2018 - Four-in-one antibody used to fight flu shows promise in mice
November 17, 2018 - New approach allows pathogens to be starved by blocking important enzymes
November 17, 2018 - Higher body mass index could cause depression even without health problems
November 17, 2018 - Protein which plays role in sensing cell damage serves as new target to treat pulmonary hypertension
November 17, 2018 - FDA Approves Adcetris (brentuximab vedotin) in Combination with Chemotherapy for Adults with Previously Untreated Systemic Anaplastic Large Cell Lymphoma or Other CD30-Expressing Peripheral T-Cell Lymphomas
November 17, 2018 - ID specialist input improves outcomes for outpatient parenteral antimicrobial therapy
November 17, 2018 - UT Southwestern scientists selected to receive 2019 Edith and Peter O’Donnell Awards
November 17, 2018 - New clinical algorithm to help individuals manage type 2 diabetes when fasting during Ramadan
November 17, 2018 - Researchers identify LZTR1 as evolutionarily conserved component of RAS pathway
November 17, 2018 - Heart Disease Leading Cause of Death in Low-Income Counties
November 17, 2018 - Estrogen Levels Test: MedlinePlus Lab Test Information
November 17, 2018 - Research reveals link between immunity, diabetes
November 17, 2018 - Research shows how to achieve improved smoking cessation outcomes within California’s Medicaid population
November 17, 2018 - New study finds less understanding and implementation of patient engagement
November 17, 2018 - New shoe insole technology could help diabetic ulcers heal better while walking
November 17, 2018 - New method to extend cell division and immortalization of avian-derived cells
November 17, 2018 - Australian Academy of Science urges parents to vaccinate children against meningococcal disease
November 17, 2018 - Hot water treatment may help improve inflammation and metabolism in sedentary people
November 17, 2018 - Researchers produce 3D chemical maps of small biological samples
November 17, 2018 - Must Blood Pressure Rise Wth Age? Remote Tribes Hold Clues
November 17, 2018 - Noonan Syndrome
November 17, 2018 - Interventions to delay and prevent type 2 diabetes are underused, researchers say
November 17, 2018 - Hackathon prize winner seeks to remotely monitor patient skin conditions
November 17, 2018 - Research team identifies Ashkenazi Jewish founder mutation for Leigh syndrome
November 17, 2018 - Gene editing could be used to halt kidney disease in patients with Joubert syndrome
November 17, 2018 - Study uncovers link between gut disruption and aging
November 17, 2018 - Teens more likely to pick up smoking after exposure from friends and family
November 17, 2018 - Nicoya designate the Institute for Stem Cell Biology and Regenerative Medicine as the OpenSPR Centre of Excellence
November 17, 2018 - new horizon in dental, oral and craniofacial research
November 17, 2018 - How does poor air quality affect your health?
November 17, 2018 - New device can regulate children’s blood glucose more like natural pancreas
November 17, 2018 - Game-Changers in Western Blotting and Protein Analysis
November 17, 2018 - FDA announces new actions to limit sale of e-cigarettes to youth
November 17, 2018 - Warmer winter temperatures related to higher crime rates
November 17, 2018 - MCO places increasing emphasis on helping people find and access healthy food
November 17, 2018 - Group of students aim to improve malaria diagnosis using old smartphones
November 17, 2018 - Transplantation of feces may protect preterm children from deadly bowel disease
November 17, 2018 - Researchers explore whether low-gluten diets can be recommended for people without allergies
November 17, 2018 - New and better marker for assessing patients after cardiac arrest
November 17, 2018 - For 7-year-old with failing bone marrow, a life-saving transplant | News Center
November 17, 2018 - New first-line treatment for peripheral T-cell lymphoma approved by FDA
November 17, 2018 - Artificial intelligence could be valuable tool to help young victims disclose traumatic testimony
November 17, 2018 - Breakthrough in the treatment of Restless Legs Syndrome
November 16, 2018 - FDA Approves Keytruda (pembrolizumab) for the Treatment of Patients with Hepatocellular Carcinoma (HCC) Who Have Been Previously Treated with Sorafenib
November 16, 2018 - Eagle Books | Native Diabetes Wellness Program
November 16, 2018 - Patients with common heart failure more likely to have lethal heart rhythms
November 16, 2018 - How AI could help veterinarians code their notes | News Center
November 16, 2018 - Bias-based bullying does more harm to students than generalized bullying
November 16, 2018 - Researchers find first direct evidence that cerebellum plays role in cognitive functions
November 16, 2018 - Non-coding genetic variant plays key role in endothelial function and disease incidence
November 16, 2018 - EMA recommends first all-oral treatment to tackle deadly sleeping sickness
November 16, 2018 - Drug used to treat dizziness may slow down growth of triple-negative breast cancer
November 16, 2018 - AHA: Icosapent Ethyl Cuts CV Risk From Elevated Triglycerides
November 16, 2018 - ‘Orphan’ RNAs make cancer deadlier, but potentially easier to diagnose
November 16, 2018 - Air Cube touches down at hospital | News Center
November 16, 2018 - CRISPR-based tool shown to enhance cell-based immunotherapy
November 16, 2018 - Mechanisms that govern HIV latency differ in the gut and blood, finds study
November 16, 2018 - Researchers unravel mystery of NPM1 protein in acute myeloid leukemia
November 16, 2018 - High school students less likely to select milk, fruit for lunch when fruit juice is available
November 16, 2018 - Football coaches with great emotional competence are more successful
November 16, 2018 - Researchers awarded $10 million grant to address root causes of asthma in Puerto Rico
November 16, 2018 - Personalized scheduling of radiotherapy using genetic data could reduce side effects
November 16, 2018 - American Cancer Society study links social isolation to higher mortality risk
November 16, 2018 - Health Tip: Manage Morning Sickness
November 16, 2018 - Long term exposure to road traffic noise linked with greater obesity risk
November 16, 2018 - Infant gut microbes altered by mother’s obesity may increase risk for future disease
November 16, 2018 - Immunotherapy combination and chemotherapy show encouraging results in Phase II acute myeloid leukemia study
November 16, 2018 - ACC Latin America Conference brings experts to discuss latest cardiovascular science
November 16, 2018 - Pooled analysis of Intersect ENT’s steroid releasing implants in patients after frontal sinus surgery to be published
November 16, 2018 - Expectations about pain intensity can become self-fulfilling prophecies
November 16, 2018 - NIH awards $3.4 million to UC researchers to study gastrointestinal lymphatic system
November 16, 2018 - Highlighting Advances in Bioengineering and Analytical Technologies with eBooks
November 16, 2018 - Scientist Dr David Taylor of MR Solutions is a finalist in the BMW i UK Tech Founder Awards
November 16, 2018 - Earlier treatment could help reverse autistic-like behavior in tuberous sclerosis
November 16, 2018 - Sucking your baby’s pacifier could improve their health
Impact of climate change on sleeping sickness vector population in Africa

Impact of climate change on sleeping sickness vector population in Africa

image_pdfDownload PDFimage_print

LSTM’s Dr Jennifer Lord is first author on a paper looking at the impact of climate change on the vectors of sleeping sickness in Africa.

The study, published in PLOS Medicine, is based on 27 years of data from Mana Pools National Park in Zimbabwe. The mathematical model developed by Dr Lord and co-authors suggests that temperature increases over the last three decades have already caused major declines in local populations of tsetse flies, thereby providing a first step in linking temperature to the risk of sleeping sickness in Africa.

Dr Lord said: “If the effect at Mana Pools extends across the whole of the Zambezi Valley, then the transmission of trypanosomes is likely to be have been greatly reduced in this warm low-lying region.” While that is good news for the disease situation in Zambezi Valley, “rising temperatures may have made some higher, cooler parts of Zimbabwe, more suitable for tsetse flies.”

Tsetse are blood-feeding insects that transmit trypanosome pathogens which cause the potentially fatal sleeping sickness in humans across sub-Saharan Africa. The parasites also cause a similar disease in livestock, with recent estimates indicating about one million cattle deaths per year.

Researchers from the Liverpool School of Tropical Medicine, the South African Centre of Excellence for Epidemiological Modelling and Analysis (SACEMA) at Stellenbosch University, and the Natural Resources Institute at the University of Greenwich, developed a mathematical model used in the study. The results, which were only made possible because of prolonged laboratory and field measures of fly densities, provided evidence that locations such as the Zambezi Valley in Zimbabwe may soon be too hot to support tsetse populations.

Since the 1990s, researchers at Rekomitjie Research Station, in the park, have been catching tsetse flies from cattle and found that the catches declined from more than 50 flies per animal per catching session in 1990, to less than 1 fly per 10 catching sessions in 2017. Since 1975, mean daily temperatures have risen by nearly 1°C and by around 2°C in the hottest month of November.

Professor John Hargrove, Senior Research Fellow at SACEMA, says the effect of recent and future climate change on the distribution of tsetse flies and other vectors, particularly mosquitoes, is poorly understood: “We don’t know, for example, whether the resurgence of malaria in the East African highlands in the 1990s was caused by rising temperatures or by increasing levels of drug resistance and decreasing control efforts.

Work carried out on tsetse at Rekomitjie has produced long-term datasets for both vector abundance and climate change. The station is located inside a protected area and has been free of agricultural activities since 1958. As not much has changed other than climate, the data from the site provided the ideal opportunity to develop a temperature-driven model for tsetse population dynamics.

The authors highlight that other areas traditionally too cold to support tsetse in large numbers are now potentially warm enough to support larger populations. If this is the case new control measures will need to be developed to protect livestock and humans previously not thought to be at risk.

Source:

https://www.lstmed.ac.uk/news-events/news/latest-study-climate-change-and-african-trypanosomiasis-vector-populations-in

Tagged with:

About author

Related Articles