News / Health

    Revolutionary Vaccine Breaks Refrigeration Barrier in Africa

    FILE - A Somali baby cries while receiving a five-in-one vaccine against several potentially fatal childhood diseases, at the Medina Maternal Child Health center in Mogadishu, Somalia
    FILE - A Somali baby cries while receiving a five-in-one vaccine against several potentially fatal childhood diseases, at the Medina Maternal Child Health center in Mogadishu, Somalia
    Jennifer Lazuta
    For decades, distribution of vaccines in Africa and other warm regions has been hampered by the need to keep the vaccines refrigerated - a major challenge in remote areas without electric power.  But the World Health Organization says a new vaccine aimed at preventing meningitis A can withstand temperatures up to 40 degrees Celsius, and was found to be 100 percent effective during a trial study in Benin. 

    Researchers said that health workers in Benin have successfully immunized more than 155,000 people against meningitis A using the first vaccination to be approved for use without constant refrigeration, also known as the "cold chain."

    The World Health Organization (WHO) said the vaccine, which is known as MenAfriVac, can be stored for up to four days in temperatures up to 40 degrees Celsius.

    PATH is a U.S.-based non-profit organization that partnered with the WHO on the Meningitis Vaccine Project.  Dr. Marie-Pierre Preziosi, the project's director, said the new breakthrough could revolutionize the way vaccination campaigns are conducted in developing countries.  She spoke to VOA from Ouagadougou.

    “As you know, vaccines are usually kept in cold chains, between 2 to 8 degrees Celsius.  And so you have to have the whole capacity around the cold chain: that is freezers, ice packs, transportation fuel, electricity fuel, all of this.  Sometimes, it is not only costly, but it is also very challenging to reach remote areas with such constraints,” said Preziosi.

    Health experts said that because of the cold chain requirement, there is normally a lot of wasted vaccine vials during immunization campaigns, particularly during the “last mile” -- the time from when the vaccine leaves the refrigerator at the district health center until it is injected into a person’s arm at the village level.

    Many communities in Africa have no access to electricity and are often too remote to be reached before the ice packs in insulated coolers melt.

    Preziosi said the flexibility of being able to transport the vaccine outside of the cold chain meant that only nine vaccine vials out of 15,000 had to be discarded during the trial study in Benin.

    Being able to work outside the cold chain also meant that health workers didn’t have to travel to and from the district health center each day to replenish vaccine supplies.  This allowed them to vaccinate more people in a shorter amount of time.

    PATH’s vice president for product development, Dr. David Kaslow, said that removing the refrigeration requirement for MenAfriVac could also reduce costs.

    “The one study that was done with the WHO looked at the modeled scenario, which is: what are all the costs that are incurred in that last mile?  And really, one of the major costs, obviously, are the cold chain costs themselves… And so the analysis was done as to what is the cost savings.  And it’s about 50 percent," he noted. "On average, from 24 cents per dose delivered to 12 cents per dose delivered.”

    Meningitis, which is the inflammation of the protective tissue that covers the brain and spinal cord, can lead to severe brain damage if left untreated and results in death in about 50 percent of cases.

    The WHO said that while meningitis can be prevented with vaccines, more than one million suspected cases have been reported by countries in Africa’s "meningitis belt" over the past 20 years.

    The Meningitis Vaccine Project said that following the MenAfriVac vaccination campaign in Benin, there were no reported cases of Meningitis A in any of the 150 vaccinated communities.

    Kaslow said that it is now up to individual countries to take advantage of this success and allow health workers to use MenAfriVac within the new temperature conditions.

    He said the next step will be for pharmaceutical developers to see if the refrigeration requirements for other vaccines, such as cholera, can also be changed.

    You May Like

    Video Democrats Clinton, Kaine Offer 'Very Different Vision' Than Trump

    In a jab at Trump, Clinton says her team wants to 'build bridges, not walls'; Obama Hails Kaine's record; Trump calls Kaine a 'job-killer'

    Turkey Wants Pakistan to Close Down institutions, Businesses Linked to Gulen

    Thousands of Pakistani students are enrolled in Gulen's commercial network of around two dozen institutions operating in Pakistan for over two decades

    AU Passport A Work in Progress

    Who will get the passport and what the benefits are still need to be worked out

    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.
    In State of Emergency, Turkey’s Erdogan Focuses on Spiritual Movementi
    X
    July 22, 2016 11:49 AM
    The state of emergency that Turkish President Recep Tayyip Erdogan has declared is giving him even more power to expand a purge that has seen an estimated 60,000 people either arrested or suspended from their jobs. VOA Europe correspondent Luis Ramirez reports from Istanbul.
    Video

    Video In State of Emergency, Turkey’s Erdogan Focuses on Spiritual Movement

    The state of emergency that Turkish President Recep Tayyip Erdogan has declared is giving him even more power to expand a purge that has seen an estimated 60,000 people either arrested or suspended from their jobs. VOA Europe correspondent Luis Ramirez reports from Istanbul.
    Video

    Video Scientists in Poland Race to Save Honeybees

    Honeybees are in danger worldwide. Causes of what's known as colony collapse disorder range from pesticides and loss of habitat to infections. But scientists in Poland say they are on track to finding a cure for one of the diseases. VOA’s George Putic reports.
    Video

    Video Wall Already Runs Along Parts of US-Mexico Border

    The Republican Party’s presidential nominee, Donald Trump, gained the support of many voters by saying he would build a wall to keep undocumented immigrants and drugs from coming across the border from Mexico. Critics have called his idea impractical and offensive to Mexico, while supporters say such a bold approach is needed to control the border. VOA’s Greg Flakus has more from the border town of Nogales, Arizona.
    Video

    Video New HIV Tests Emphasize Rapid Results

    As the global fight against AIDS intensifies, activists have placed increasing importance on getting people to know their HIV status. Some companies are developing new HIV testing methods designed to be quick, easy and accurate. Thuso Khumalo looks at the latest methods, presented at the International AIDS conference in Durban, South Africa.
    Video

    Video African Youth with HIV Urge More Support

    HIV, the virus that causes AIDS, is the top killer of teens in sub-Saharan Africa. But many youths say their experience with the virus is unique and needs to be addressed differently than the adult epidemic. VOA South African Correspondent Anita Powell reports.
    Video

    Video Poor Residents in Cleveland Not Feeling High Hopes of Republican Convention

    With the Republican Party's National Convention underway in Cleveland, Ohio, delegates and visitors are gathered in the host city's downtown - waiting to hear from the party's presidential candidate, Donald Trump. But a few kilometers from the convention's venue, Cleveland's poorest residents are not convinced Trump or his policies will make a difference in their lives. VOA's Ramon Taylor spoke with some of these residents as well as some of the Republican delegates and filed this report.
    Video

    Video Pop-Up Art Comes to Your Living Room, Backyard and Elsewhere

    Around the world, independent artists and musicians wrestle with a common problem: where to exhibit or perform? Traditional spaces such as museums and galleries are reserved for bigger names, and renting a space is not feasible for many. Enter ArtsUp, which connects artists with venue owners. Whether it’s a living room, restaurant, office or even a boat, pop-up events are bringing music and art to unexpected places. Tina Trinh has more.
    Video

    Video With Yosemite as Backdrop, Obama Praises National Parks

    Last month, President Barack Obama and his family visited some of the most beautiful national parks in the U.S. Using the majestic backdrop of a towering waterfall in California's Yosemite National Park, Obama praised the national park system which celebrates its 100th anniversary this year. He talked about the importance of America’s “national treasures” and the need to protect them from climate change and other threats. VOA’s Julie Taboh reports.
    Video

    Video Counter-Islamic State Coalition Plots Next Steps

    As momentum shifts against Islamic State in Iraq, discussions are taking place about the next steps for driving the terrorist group from its final strongholds. Secretary of State John Kerry is hosting a counter-IS meeting at the State Department, a day after defense ministers from more than 30 countries reviewed and agreed upon a course of action. VOA Pentagon correspondent Carla Babb reports.
    Video

    Video Russia's Participation at Brazil Olympic Games Still In Question

    The International Olympic Committee has delayed a decision on whether to ban all Russian teams from competing in next month's Olympic Games in Brazil over allegations of an elaborate doping scheme. The World Anti-Doping Agency recently released an independent report alleging widespread doping by Russian athletes at the 2014 Winter Olympics in Sochi. So far, only Russian track and field athletes have been barred from the Summer Games in Brazil. VOA's Zlatica Hoke has more.
    Video

    Video Scotland’s Booming Whisky Industry Fears Brexit Hangover

    After Britain’s vote to leave the European Union, Scotland’s government wants to break away from the United Kingdom – fearing the nation’s exports are at risk. Among the biggest of these is whisky. Henry Ridgwell reports on a time of turmoil for those involved in the ancient art of distilling Scotland’s most famous product.
    Video

    Video Millennials Could Determine Who Wins Race to White House

    With only four months to go until Americans elect a new president, one group of voters is getting a lot more attention these days: those ages 18 to 35, a generation known as millennials. It’s a demographic that some analysts say could have the power to decide the 2016 election. But a lot depends on whether they actually turn out to vote. VOA’s Alexa Lamanna reports.

    Special Report

    Adrift The Invisible African Diaspora