News / Health

    Vaccine, Other Strategies May Soon Control Dengue Fever

    Vaccine And Other Strategies May Soon Control Dengue Feveri
    X
    Carol Pearson
    July 10, 2014 11:59 PM
    There's new hope for those who suffer from dengue, a virus characterized by hammering headaches, high fevers and pain. VOA's Carol Pearson reports about a possible new vaccine reported in The Lancet on July 10, and on other ways to contain this sometimes deadly virus.
    Carol Pearson

    There's new hope for those who suffer from dengue, a virus characterized by hammering headaches, high fevers and pain. A vaccine shows promise after a two-year trial in five Asian countries.

    Dr. Maria Rosario Capeding, one of the researchers in the Philippines, said that during the trial, the vaccine cut the number of dengue cases in half and significantly reduced the number of severe cases that cause hemorrhaging.

    "The vaccine efficacy against dengue hemorrhagic fever, according to the WHO criteria, after three doses was 88.5 percent," she said.

    Another large scale study is taking place in Latin America. Sanofi Pasteur, the manufacturer, says the vaccine could be available by 2015. The study was published in The Lancet medical journal.

    Dengue is a mosquito-borne disease called "break-bone fever," because it causes a high fever and such severe pain in the joints and bones that people who have it feel that their bones are breaking. It can take months to recover, may require hospitalization and kills 22,000 people each year, mostly children, according to the World Health Organization (WHO).

    FILE - A female Aedes aegypti mosquito is shown in this Center for Disease Control photograph.FILE - A female Aedes aegypti mosquito is shown in this Center for Disease Control photograph.
    x
    FILE - A female Aedes aegypti mosquito is shown in this Center for Disease Control photograph.
    FILE - A female Aedes aegypti mosquito is shown in this Center for Disease Control photograph.

    The WHO says the virus is now 30 times more prevalent than it was 50 years ago. It's common in many regions of Asia, the Pacific, the Americas and Africa. There are no particular drugs to fight dengue.

    In addition to the vaccine, researchers are working on other ways to prevent or contain the virus. At the John's Hopkins mosquito lab, Professor George Demopoulos has discovered a way to block the dengue virus in lab mosquitos. The next step, he says, is to do the same in wild mosquitoes.

    "Dengue and malaria are diseases that can only be controlled through the use of multiple approaches," he said. "It's like a war. You cannot win a war with only one weapon.  You need multiple types of weapons and strategies to win a war. And the same applies for these diseases."

    Other approaches include teaching people how to eliminate mosquito-breeding sites like water cisterns, water left in small containers near their homes or pools of standing water.  Warmer climates and urbanization are increasing the spread of the mosquito that carries the virus. With urbanization, there's more standing water where mosquitoes can lay their eggs.       

    Dr. Luis Castellanos is an infectious disease expert with the Pan American Health Organization, or PAHO. The number of deaths from dengue
    has declined in the Americas because, as he explains, "PAHO has extensively been working with the countries [of the Americas] over the last three, four years to train thousands of physicians throughout the countries to be ready to suspect dengue, identify, diagnose and treat any dengue case."

    The World Health Organization estimates that 40 percent of the world's population is at risk for developing dengue. By this time next year, there may be a way to fight it.

    You May Like

    Turkey, US Splits Deepen Over Support for Kurdish Militants

    Ankara summons American ambassador to protest remarks by State Department spokesman who said Washington does not consider Syria's Kurdish Democracy Union Party (PYD) a terrorist organization

    Obama Seeking $19 Billion for National Cybersecurity

    Move, touted as attempt to build broad, cohesive federal response to cyberthreats, calls for increase in cybersecurity spending across all government agencies

    Video Foreign Policy Weighs Heavy for Some US Voters

    VOA talks to protesters in Manchester, New Hampshire, who sound off on foreign policy issues such as the Guantanamo Bay prison, the Israeli-Palestinian conflict and the wars in Iraq, Syria and Yemen

    Featured Videos

    Your JavaScript is turned off or you have an old version of Adobe's Flash Player. Get the latest Flash player.
    Valentine's Day Stinks for Lebanese Clownsi
    X
    February 09, 2016 8:04 PM
    This weekend, on Valentine's Day in Lebanon, love is not the only thing in the air. More than half a year after the country's trash crisis began, the stink of uncollected garbage remains on the streets. Step forward "Clown Me In," a group of clowns who use their skills for activism. Before the most romantic day of the year the clowns have released their unusual take on love in Lebanon -- in a bid to keep the pressure up and get the trash off the streets. John Owens reports from Beirut.
    Video

    Video Valentine's Day Stinks for Lebanese Clowns

    This weekend, on Valentine's Day in Lebanon, love is not the only thing in the air. More than half a year after the country's trash crisis began, the stink of uncollected garbage remains on the streets. Step forward "Clown Me In," a group of clowns who use their skills for activism. Before the most romantic day of the year the clowns have released their unusual take on love in Lebanon -- in a bid to keep the pressure up and get the trash off the streets. John Owens reports from Beirut.
    Video

    Video Rocky Year Ahead for Nigeria Amid Oil Price Crash

    The global fall in the price of oil has rattled the economies of many petroleum exporters, and Africa’s oil king Nigeria is no exception. As Chris Stein reports from Lagos, analysts are predicting a rough year ahead for the continent’s top producer of crude.
    Video

    Video Foreign Policy Weighs Heavy for Some US Voters

    VOA talks to protesters in Manchester, New Hampshire who sound off on foreign policy issues such as the Guantanamo Bay Prison, the Israeli-Palestinian conflict, Middle East Affairs and national security.
    Video

    Video 'No Means No' Program Targets Sexual Violence in Kenya

    The organizers of an initiative to reduce and stop rape in the informal settlements around Kenya's capital say their program is having marked success. Girls are taking self-defense classes while the boys are learning how to protect the girls and respect them. Lenny Ruvaga reports from Nairobi.
    Video

    Video New Hampshire Voters Are Independent, Mindful of History

    Once every four years, the northeastern state of New Hampshire becomes the center of the U.S. political universe with its first-in-the-nation presidential primary. What's unusual about New Hampshire is how seriously the voters take their role and the responsibility of being among the first to weigh in on the candidates.
    Video

    Video Chocolate Lovers Get a Sweet History Lesson

    Observed in many countries around the world, Valentine’s Day is sometimes celebrated with chocolate festivals. But at a festival near Washington, the visitors experience a bit more than a sugar rush. They go on a sweet journey through history. VOA’s June Soh takes us to the festival.
    Video

    Video 'Smart' Bandages Could Heal Wounds More Quickly

    Simple bandages are usually seen as the first line of attack in healing small to moderate wounds and burns. But scientists say new synthetic materials with embedded microsensors could turn bandages into a much more valuable tool for emergency physicians. VOA’s George Putic reports.
    Video

    Video Bhutanese Refugees in New Hampshire Closely Watching Primary Election

    They fled their country and lived in refugee camps in neighboring Nepal for decades before being resettled in the northeastern U.S. state of New Hampshire -- now the focus of the U.S. presidential contest. VOA correspondent Aru Pande spoke with members of the Bhutanese community, including new American citizens, about the campaign and the strong anti-immigrant rhetoric of some of the candidates.
    Video

    Video Researchers Use 3-D Printer to Produce Transplantable Body Parts

    Human organ transplants have become fairly common around the world in the past few decades. Researchers at various universities are coordinating their efforts to find solutions -- including teams at the University of Pennsylvania and Rice University in Houston that are experimenting with a 3-D printer -- to make blood vessels and other structures for implant. As VOA’s Greg Flakus reports from Houston, they are also using these artificial body parts to seek ways of defeating cancerous tumors.
    Video

    Video Helping the Blind 'See' Great Art

    There are 285 million blind and visually impaired people in the world who are unable to enjoy visual art at a museum. One New York photographer is trying to fix this situation by making tangible copies of the world’s masterpieces. VOA correspondent Victoria Kupchinetsky was there as visually impaired people got a feel for great art. Joy Wagner narrates her report.
    Video

    Video German Artists to Memorialize Refugees With Life Jacket Exhibit

    Sold in every kind of shop in some Turkish port towns, life jackets have become a symbol of the refugee crisis that brought a million people to Europe in 2015.  On the shores of Lesbos, Greece, German artists collect discarded life jackets as they prepare an art installation they plan to display in Germany.  For VOA, Hamada Elrasam has this report from Lesbos, Greece.
    Video

    Video E-readers Help Ease Africa's Book Shortage

    Millions of people in Africa can't read, and there's a chronic shortage of books. A non-profit organization called Worldreader is trying to help change all that one e-reader at a time. VOA’s Deborah Block tells us about a girls' school in Nairobi, Kenya where Worldreader is making a difference.
    Video

    Video Genius Lets World Share Its Knowledge

    Inspired by crowdsourcing companies like Wikipedia, Genius allows anyone to edit anything on the web, using its web annotation tool
    Video

    Video In Philippines, Mixed Feelings About Greater US Military Presence

    In the Philippines, some who will be directly affected by a recent Supreme Court decision clearing the way for more United States troop visits are having mixed reactions.  The increased rotations come at a time when the Philippines is trying to build up its military in the face of growing maritime assertiveness from China.  From Bahile, Palawan on the coast of the South China Sea, Simone Orendain has this story.