News / Health

Scientists Race to Contain Malaria: New Discoveries, More Resistance

Scientists Race to Contain Malaria: New Discoveries, More Resistancei
X
May 18, 2013 3:35 AM
Two new medical discoveries are raising hopes of containing malaria - the mosquito-borne parasitic disease that each year infects more than 200 million people and claims an estimated 660 thousand lives. Meantime, the World Health Organization is warning about dire consequences if a drug-resistant form of malaria spreads beyond southeast Asia.
Scientists Race to Contain Malaria: New Discoveries, More Resistance
Carol Pearson
Two new medical discoveries are raising hopes of containing malaria - the mosquito-borne parasitic disease that each year infects more than 200 million people and claims an estimated 660 thousand lives.  Meantime, the World Health Organization is warning about dire consequences if a drug-resistant form of malaria spreads beyond southeast Asia.

Artemisinin has helped cut global malaria deaths by more than 25 percent over the past decade. But now, in parts of Southeast Asia, this drug no longer works. And the World Health Organization's Dr. Shin Young-Soo warns of serious setbacks if drug resistance continues to spread.  

"The truth is, that malaria will beat us all unless we do more than what we are doing now, and we do it better," he said.

Controlling malaria involves a range of strategies: using insecticidal bed nets to prevent mosquito bites, spraying insecticides, preventive treatment for children  and pregnant women, and controlling or changing mosquitoes, or the malaria parasites they carry.

The World Health Organization says that in the last 10 years, 20 countries have brought the disease under control. At a U.S. congressional hearing, Dr. Mark Dybul executive director of the Global Fund to Fight AIDS, Tuberculosis and Malaria, said the world is on course to end malaria.

"We've had so much success over the last 10 years that you've heard about, that high-transmission areas are becoming much more confined," said Dybul.

Dybul said global efforts have led to better treatment and more effective control of the mosquito that carries the parasite.
 
Dr. Anthony Fauci, at the US National Institutes of Health, points to promising research that involves introducing a strain of bacteria into the mosquito.

"It's a bacteria that infects the mosquito, and what it does is it interferes with the developmental process that the malaria parasite goes through in the mosquito in its lifecycle," said Fauci.

And once the bacterium is in the mosquito, it's passed down to succeeding generations. The hope is, these malaria-proof mosquitoes eventually will replace those that can carry the parasite.  

"Which means, if you can get this out there among populations of mosquitoes in different regions of the world in different countries, it could have a profound effect on the control of malaria," said Fauci.

The true test, of course, will come when mosquitos infected with the bacterium are released into the wild. Dr. Guowu Bian is the Michigan State University scientist who led this research. He spoke to VOA via Skype.

"I hope in a few years, maybe three or four years, our mosquito can go to the field," he said.

Another promising line of research involves manipulating the mosquito's genes. Right now, the anopheles mosquito has no defense against the malaria parasite. If scientists can change its genetic makeup, the mosquito's immune system could repel the organism.

Meanwhile, the clock is ticking as the malaria parasite becomes immune to the world's front-line drug against the disease.

You May Like

Will Cuba Follow the Southeast Asia Model?

Decision to restore ties between US and Cuba has some debating whether it will lead to an enhancement or regression of democracy on the Communist island nation More

Kenyan Designer Finds Her Niche in Fashion Industry

‘Made in China’ fabrics underlie her success More

Report: CIA, Israel's Mossad Killed Senior Hezbollah Commander

The Washington Post story says Imad Mughniyah was killed instantly by a bomb "triggered remotely" from Tel Aviv by Mossad agents More

This forum has been closed.
Comments
     
There are no comments in this forum. Be first and add one

Featured Videos

Your JavaScript is turned off or you have an old version of Adobe's Flash Player. Get the latest Flash player.
Jefferson's Library Continues to Impress, 200 Years Lateri
X
Deborah Block
January 31, 2015 12:12 AM
Two hundred years after the U.S. Congress purchased a huge collection of books belonging to former President Thomas Jefferson, it remains one of America’s greatest literal treasures and has become the centerpiece of Washington’s Library of Congress. VOA’s Deborah Block reports.
Video

Video Jefferson's Library Continues to Impress, 200 Years Later

Two hundred years after the U.S. Congress purchased a huge collection of books belonging to former President Thomas Jefferson, it remains one of America’s greatest literal treasures and has become the centerpiece of Washington’s Library of Congress. VOA’s Deborah Block reports.
Video

Video Egypt's Suez Canal Dreams Tempered by Continued Unrest

Egypt plans to expand the Suez Canal, raising hopes that the end of its economic crisis may be in sight. But some analysts say they expect the project may cost too much and take too long to make life better for everyday Egyptians. VOA's Heather Murdock reports.
Video

Video Threat of Creeping Lava Has Hawaiians on Edge

Residents of the small town of Pahoa on the Big Island of Hawaii face an advancing threat from the Kilauea volcano. Local residents are keeping a watchful eye on creeping lava. Mike O’Sullivan reports.
Video

Video Pro-Kremlin Youth Group Creatively Promotes 'Patriotic' Propaganda

As Russia's President Vladimir Putin faces international pressure over Ukraine and a failing economy, unofficial domestic groups are rallying to his support. One such youth organization, CET, or Network, uses creative multimedia to appeal to Russia's urban youth with patriotic propaganda. VOA's Daniel Schearf reports.
Video

Video Filmmakers Produce Hand-Painted Documentary on Van Gogh

The troubled life of the famous 19th century Dutch painter Vincent van Gogh has been told through many books and films, but never in the way a group of filmmakers now intends to do. "Loving Vincent " will be the first ever feature-length film made of animated hand-painted images, done in the style of the late artist. VOA’s George Putic reports.
Video

Video Issues or Ethnicity? Question Divides Nigeria

As Nigeria goes to the polls next month, many expect the two top presidential contenders to gain much of their support from constituencies organized along ethnic or religious lines. But are faith and regional blocs really what political power in Nigeria is about? Chris Stein reports.
Video

Video Rock-Consuming Organisms Alter Views of Life Processes

Scientists thought they knew much about how life works, until a discovery more than two decades ago challenged conventional beliefs. Scientists found that there are organisms that breathe rocks. And it is only recently that the scientific community is accepting that there are organisms that could get energy out of rocks. Correspondent Elizabeth Lee reports.
Video

Video Paris Attacks Highlight Global Weapons Black Market

As law enforcement officials piece together how the Paris and Belgian terror cells carried out their recent attacks, questions are being asked about how they obtained military grade assault weapons - which are illegal in the European Union. As VOA's Jeff Swicord reports, experts say there is a very active worldwide black market for these weapons, and criminals and terrorists are buying.
Video

Video Activists Accuse China of Targeting Religious Freedom

The U.S.-based Chinese religious rights group ChinaAid says 2014 was the worst year for religious freedom in China since the end of the Cultural Revolution. As Ye Fan reports, activists say Beijing has been tightening religious controls ever since Chinese leader Xi Jinping came to office. Hu Wei narrates.
Video

Video Theologians Cast Doubt on Morality of Drone Strikes

In 2006, stirred by photos of U.S. soldiers mistreating Iraqi prisoners, a group of American faith leaders and academics launched the National Religious Campaign Against Torture. It played an important role in getting Congress to investigate, and the president to ban, torture. VOA's Jerome Socolovsky reports.
Video

Video Former Sudan 'Lost Boy' Becomes Chess Master in NYC

In the mid-1980’s, thousands of Sudanese boys escaped the country's civil war by walking for weeks, then months and finally for more than a year, up to 1,500 kilometers across three countries. The so-called Lost Boys of the Sudan had little time for games. But one of them later mastered the game of chess, and now teaches it to children in the New York area. VOA’s Bernard Shusman in New York has his story.
Video

Video NASA Monitors Earth’s Vital Signs From Space

The U.S. space agency, NASA, is wrapping up its busiest 12-month period in more than a decade, with three missions launched in 2014 and two this month, one in early January and the fifth scheduled for January 29. As VOA’s Rosanne Skirble reports, the instruments being lifted into orbit are focused on Earth’s vital life support systems and how they are responding to a warmer planet.

Circumventing Censorship

An Internet Primer for Healthy Web Habits

As surveillance and censoring technologies advance, so, too, do new tools for your computer or mobile device that help protect your privacy and break through Internet censorship.
More

All About America

AppleAndroid