Dengue fever is a viral disease transmitted by mosquitoes in tropical and subtropical regions of the world. It is one of the most significant insect-borne diseases found in humans, with 2.5 billion people living in high-risk areas globally. In recent years, the number of cases occurring has increased dramatically. Being able to predict the trend of dengue fever facilitates early public heath responses to minimise morbidity and mortality.
A research team led by Qiyong Liu of the State Key Laboratory for Infectious Disease Prevention and Control, and China CDC, and Linwei Tian of the Stanley Ho Centre for Emerging Infectious Diseases, School of Public Health and Primary Care, Chinese University of Hong Kong, correlated weather conditions, including minimum and maximum temperature, wind velocity, humidity and rainfall with the number of cases of dengue fever in the city of Guangzhou, capital city of Guangdong Province, China, over a six year period from 2001 until 2006
As dengue fever is a legally notifiable disease in China, the researchers were able to retrieve the monthly incidence of dengue fever from the Notifiable Infectious Disease Report System in the China Centre for Disease Control and Prevention. They correlated this with monthly weather data obtained from the China Meteorological Data Sharing Service System over the same period of time.
Higher minimum temperatures and lower wind speeds were associated with the highest number of cases of dengue fever. If the effects of humidity were factored into the mathematical model, the model fit actual events even better. The effects of minimum temperature and humidity on the incidence of dengue fever were subject to a lag of about one month, whereas the effects of wind velocity were apparent in the same month.
The authors suggest that the effects of humidity and temperature are likely to be related to mosquito survival; low humidity and cooler temperatures decrease mosquito survival. Wind speed affects mosquito flying, so high wind velocities lead to lower density of mosquitoes. But the authors point out "the transmission of dengue fever is more complex, and is influenced by community intervention measures, human behavioural influences on mosquito population and human mosquito interaction," and conclude, "future studies require studying mosquito populations."1. Time series analysis of dengue fever and weather in Guangzhou, China
3. BioMed Central (http://www.biomedcentral.com/) is an STM (Science, Technology and Medicine) publisher which has pioneered the open access publishing model. All peer-reviewed research articles published by BioMed Central are made immediately and freely accessible online, and are licensed to allow redistribution and reuse. BioMed Central is part of Springer Science+Business Media, a leading global publisher in the STM sector.
Charlotte Webber | EurekAlert!
Rutgers-led innovation could spur faster, cheaper, nano-based manufacturing
14.02.2018 | Rutgers University
New study from the University of Halle: How climate change alters plant growth
12.01.2018 | Martin-Luther-Universität Halle-Wittenberg
An international team of researchers has discovered a new anti-cancer protein. The protein, called LHPP, prevents the uncontrolled proliferation of cancer cells in the liver. The researchers led by Prof. Michael N. Hall from the Biozentrum, University of Basel, report in “Nature” that LHPP can also serve as a biomarker for the diagnosis and prognosis of liver cancer.
The incidence of liver cancer, also known as hepatocellular carcinoma, is steadily increasing. In the last twenty years, the number of cases has almost doubled...
In just a few weeks from now, the Chinese space station Tiangong-1 will re-enter the Earth's atmosphere where it will to a large extent burn up. It is possible that some debris will reach the Earth's surface. Tiangong-1 is orbiting the Earth uncontrolled at a speed of approx. 29,000 km/h.Currently the prognosis relating to the time of impact currently lies within a window of several days. The scientists at Fraunhofer FHR have already been monitoring Tiangong-1 for a number of weeks with their TIRA system, one of the most powerful space observation radars in the world, with a view to supporting the German Space Situational Awareness Center and the ESA with their re-entry forecasts.
Following the loss of radio contact with Tiangong-1 in 2016 and due to the low orbital height, it is now inevitable that the Chinese space station will...
Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology FEP, provider of research and development services for OLED lighting solutions, announces the founding of the “OLED Licht Forum” and presents latest OLED design and lighting solutions during light+building, from March 18th – 23rd, 2018 in Frankfurt a.M./Germany, at booth no. F91 in Hall 4.0.
They are united in their passion for OLED (organic light emitting diodes) lighting with all of its unique facets and application possibilities. Thus experts in...
A new scenario seeking to explain how Mars' putative oceans came and went over the last 4 billion years implies that the oceans formed several hundred million...
For the first time, an interdisciplinary team from the University of Basel has succeeded in integrating artificial organelles into the cells of live zebrafish embryos. This innovative approach using artificial organelles as cellular implants offers new potential in treating a range of diseases, as the authors report in an article published in Nature Communications.
In the cells of higher organisms, organelles such as the nucleus or mitochondria perform a range of complex functions necessary for life. In the networks of...
19.03.2018 | Event News
16.03.2018 | Event News
13.03.2018 | Event News
22.03.2018 | Trade Fair News
22.03.2018 | Earth Sciences
22.03.2018 | Earth Sciences