MedicineWorld.Org
Your gateway to the world of medicine
Home
News
Cancer News
About Us
Cancer
Health Professionals
Patients and public
Contact Us
Disclaimer

Medicineworld.org: SARS: a model disease

Back to infectious disease news Blogs list Cancer blog  


Subscribe To Infectious Disease News RSS Feed  RSS content feed What is RSS feed?

SARS: a model disease




A new model to predict the spread of emerging diseases has been developed by scientists in the US, Italy, and France. The model, described in the online open access journal BMC Medicine, could give healthcare professionals advance warning of the path an emerging disease might take and so might improve emergency responses and control.

Severe acute respiratory syndrome (SARS) spread rapidly in 2002-2003, revealing just how vulnerable we might be to emerging diseases and how global transportation is critical to the spread of an epidemic.



SARS: a model disease
SARS virus

Now, Vittoria Colizza and Alessandro Vespignani of Indiana University, Bloomington, USA and the Institute for Scientific Interchange Foundation, in Turin, Italy, and his colleagues in France have developed a predictive model of the spread of emerging diseases based on actual travel and census data for more than three thousand urban areas in 220 countries. The model provides predictions of how likely an outbreak will be in each region and how widespread it might become. The research highlights just how the accuracy in predicting the spreading pattern of an epidemic can be correlation to clearly identifiable routes by which the disease could spread.

In order to assess the predictive power of their model, the scientists turned to the historical records of the global spread of the SARS virus. They reviewed the initial conditions before the disease had spread widely, based on the data for the arrival of the first patient who left mainland China for Hong Kong, and for the resulting outbreak there. They then simulated the likelihood that SARS would emerge in specific countries thereafter, as brought by infectious travelers. The simulated results fit very accurately with the actual pattern of the spread of SARS in 2002. Analysis of the results also identified possible paths of the virus' spread along the routes of commercial air travel, highlighting some preferred channels which may serve as epidemic pathways for the global spread of the disease.

"The presented computational approach shows that the integration of long-range mobility and demographic data provides epidemic models with a predictive power that can be consistently tested," the scientists explain. "This computational strategy can be therefore considered as a general tool in the analysis and forecast of the global spreading of emerging diseases".


Posted by: Mark    Source




Did you know?
A new model to predict the spread of emerging diseases has been developed by scientists in the US, Italy, and France. The model, described in the online open access journal BMC Medicine, could give healthcare professionals advance warning of the path an emerging disease might take and so might improve emergency responses and control.

Medicineworld.org: SARS: a model disease

SARS Main| SARS Abroad| SARS and Goverment| SARS Information in different languages| Media about SARS| Physicians resources for SARS| Reference information for SARS| Updates on SARS|

Copyright statement
The contents of this web page are protected. Legal action may follow for reproduction of materials without permission.