Featured Research

from universities, journals, and other organizations

Malaria can be defeated without a globally led eradication program, experts say

Date:
February 21, 2013
Source:
University of Florida
Summary:
Malaria does not have to be eradicated globally for individual countries to succeed at maintaining elimination of the disease, according to new research.

Malaria does not have to be eradicated globally for individual countries to succeed at maintaining elimination of the disease, according to research from the University of Florida's Emerging Pathogens Institute and department of geography, to be published in the journal Science Feb. 22.

Related Articles


Researchers Andrew Tatem and Christina Chiyaka found that those countries that have eliminated malaria have maintained their malaria-free states with remarkable stability, going against traditional theory. Between 1945 and 2010, 79 countries eliminated malaria and 75, or 95 percent, remained malaria-free, shrinking the geographic range of the disease, the researchers said.

For the 99 countries with endemic malaria today, the research by Tatem and his colleagues has important implications for tackling the problem. The elimination of malaria may be less costly to achieve and maintain than previously thought, Tatem said.

"Traditional theory suggests that we have to get rid of malaria completely, all across the world, all at around the same time, to keep new cases from being imported and starting outbreaks in elimination countries all over again," said Tatem, who conducted the research at UF and now is a professor at the University of Southampton in the United Kingdom. Chiyaka also has moved to the United Kingdom with her family.

The researchers found, however, that malaria elimination may be a 'sticky state,' meaning that once elimination is achieved, resurgence becomes a rare event.

"For instance, the United States imports 1,500 cases of malaria per year but has seen very few local outbreaks resulting from these, despite still having mosquitoes capable of spreading malaria," Tatem said. "The United States doesn't have active control measures in place, but does have a well-functioning detection system in place to take care of it."

Tatem said that many factors, working in combination, have likely contributed to the stability of malaria elimination seen in many countries. These include urbanization, which creates environments that are unfavorable for malaria-spreading mosquitoes; improvements in surveillance within health systems to ensure that imported cases are treated promptly and any local outbreaks are controlled early; and travel patterns, with travelers who bring in infections from elsewhere rarely ending up in rural areas where mosquito densities are highest, thus reducing the likelihood of onward spread.

Malaria has long been a global health issue. In 1955, the World Health Organization launched an eradication campaign that eliminated the disease in many temperate and subtropical regions but did not achieve worldwide eradication. The program was scrapped after less than two decades in favor of controlling malaria. However, WHO attributed about 660,000 deaths to the disease in 2010, mostly African children.


Story Source:

The above story is based on materials provided by University of Florida. Note: Materials may be edited for content and length.


Journal Reference:

  1. C. Chiyaka, A. J. Tatem, J. M. Cohen, P. W. Gething, G. Johnston, R. Gosling, R. Laxminarayan, S. I. Hay, D. L. Smith. The Stability of Malaria Elimination. Science, 2013; 339 (6122): 909 DOI: 10.1126/science.1229509

Cite This Page:

University of Florida. "Malaria can be defeated without a globally led eradication program, experts say." ScienceDaily. ScienceDaily, 21 February 2013. <www.sciencedaily.com/releases/2013/02/130221143756.htm>.
University of Florida. (2013, February 21). Malaria can be defeated without a globally led eradication program, experts say. ScienceDaily. Retrieved December 19, 2014 from www.sciencedaily.com/releases/2013/02/130221143756.htm
University of Florida. "Malaria can be defeated without a globally led eradication program, experts say." ScienceDaily. www.sciencedaily.com/releases/2013/02/130221143756.htm (accessed December 19, 2014).

Share This


More From ScienceDaily



More Health & Medicine News

Friday, December 19, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

The Best Tips to Curb Holiday Carbs

The Best Tips to Curb Holiday Carbs

Buzz60 (Dec. 19, 2014) It's hard to resist those delicious but fattening carbs we all crave during the winter months, but there are some ways to stay satisfied without consuming the extra calories. Vanessa Freeman (@VanessaFreeTV) has the details. Video provided by Buzz60
Powered by NewsLook.com
Sierra Leone Bikers Spread the Message to Fight Ebola

Sierra Leone Bikers Spread the Message to Fight Ebola

AFP (Dec. 19, 2014) More than 100 motorcyclists hit the road to spread awareness messages about Ebola. Nearly 7,000 people have now died from the virus, almost all of them in west Africa, according to the World Health Organization. Video provided by AFP
Powered by NewsLook.com
Researchers Test Colombian Village With High Alzheimer's Rates

Researchers Test Colombian Village With High Alzheimer's Rates

AFP (Dec. 19, 2014) In Yarumal, a village in N. Colombia, Alzheimer's has ravaged a disproportionately large number of families. A genetic "curse" that may pave the way for research on how to treat the disease that claims a new victim every four seconds. Duration: 02:42 Video provided by AFP
Powered by NewsLook.com
Double-Amputee Becomes First To Move Two Prosthetic Arms With His Mind

Double-Amputee Becomes First To Move Two Prosthetic Arms With His Mind

Buzz60 (Dec. 19, 2014) A double-amputee makes history by becoming the first person to wear and operate two prosthetic arms using only his mind. Jen Markham has the story. Video provided by Buzz60
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

More Coverage


Eliminating Malaria Has Longlasting Benefits for Many Countries

Feb. 21, 2013 A review of malaria elimination suggests stopping malaria transmission completely has longlasting benefits for many countries and that once eliminated, the disease is unlikely to reemerge over ... read more

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins