Public Health
publicado em 21/01/2013 às 16h37:00
   Dê o seu voto:

Study links effects of temperature variation with records of dengue

Research on impact of climate on dengue cases appearing analyzes according to meteorological variables

 
font size
A-
A+

Some pieces of information on this page may have been automatically translated. Makernews is not responsible for the irregularities resulting from these translations. When in doubt,      consult the original text.



Foto: Rogério Santana/SECOM/RJ
Increase of one degree in the minimum temperature in just one month causes 45% increase in cases of dengue in the following month
  « Previous
next »  
Increase of one degree in the minimum temperature in just one month causes 45% increase in cases of dengue in the following month

Developed by industry researcher Epidemiology UFRJ Adriana Fagundes Gomes, the study Spatial and Temporal Analysis of the Relationship Between Weather Variables and Dengue in the city of Rio de Janeiro, from 2001 to 2009, shows that is not always very high temperatures along with increased rainfall are determining factors for the increase in dengue cases.

In the survey, Adriana shows that an increase of one degree in the minimum temperature in just one month causes 45% increase in the number of dengue cases in the following month, while increased rainfall at 10 mm results in a 6% increase in the number of cases in the same period. Moreover, it shows that climate is an important factor in the temporal and spatial distribution of vector-borne diseases.

She explains that weather conditions are directly related to the development of the mosquito vector to deliver faster maturation (for temperature) and increase in the number of breeding sites (in case of rain), increasing the likelihood of vector-human interaction and therefore man-virus.

Studies show that temperature is inversely proportional to the time development of Aedes aegypti to adulthood. However, above 40 ° C, the life expectancy of the mosquito decreases, while its capability to transmit the virus. The maximum rates of survival are in the range 20 to 30 ° C. However, Aedes aegypti survives above 30 ° C with minimal impact, since it is housed. Thus, in the city of Rio de Janeiro, the mosquito is, most of the year, the ideal temperature. But, being a seasonal disease, the number of cases is concentrated in the summer, says the researcher.

According to Adriana, his research contributes to preventive actions, since it involves analysis of climatic parameters, which can be done at low cost and to try to understand the impact of climate, providing information for the development of statistical tools for risk analysis is made.

<i> information ENSP / RJ <i>

Source: Isaude.net
   Palavras-chave:   ENSP    Epidemiology    Dengue    Weather    Temperature    Precipitation    Breeding   
  • Share this pageShare this page
  • Share this pageCorrect
  • ShareShare
  • AlertAlert
Reduced link: 
  • You are recommending this story: Study links effects of temperature variation with records of dengue
  • Fill in the following form to send your recommendation to your friend:

  • You are suggesting a correction for this story: Study links effects of temperature variation with records of dengue


Receba notícias do iSaúde no seu e-mail de acordo com os assuntos de seu interesse.
Seu nome:
Seu email:
Desejo receber um alerta com estes assuntos:
ENSP    epidemiology    dengue    weather    temperature    precipitation    breeding   
Comments:
Comment
Leave your comment
Close
(Required fields are marked with an *)

(Your email address will never be published or shared.)

Enter the letters and numbers below and click in the button "send"

  • Twitter iSaúde
advertising
Informe Saúde printed version

Recommend the portal
Close [X]
  • You are recommending this story: http://www.isaude.net
  • Fill in the following form to send your recommendation to your friend:

RSS news from the portal  iSaúde.net
Get the newsletter of the portal  iSaúde.net
Recommend the portal iSaúde.net
News from  iSaúde.net in your blog or website.
Get news on the subject of your interest.
© 2000-2011 www.isaude.net Todos os direitos reservados.