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The troubling reason why vaccines are made too late ... if they’re made at all

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    The child's symptoms begin
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    with mild fever, headache, muscle pains,
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    followed by vomiting and diarrhea,
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    then bleeding from the mouth,
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    nose, and gums.
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    Death follows in the form of organ failure
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    from low blood pressure.
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    Sounds familiar?
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    If you're thinking this is Ebola,
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    actually in this case it's not.
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    It's an extreme form of dengue fever,
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    a mosquito-born disease which also does
    not have effective therapy or a vaccine
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    and kills 22,000 people each year.
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    That is actually twice
    the number of people
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    that have been killed by Ebola
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    in the nearly four decades
    that we've known about it.
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    As for measles, so much
    in the news recently,
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    the death toll is actually tenfold higher.
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    Yet for the last year,
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    it has been Ebola that has stolen
    all of the headlines and the fear.
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    Clearly, there is something
    deeply rooted about it,
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    something which scares us
    and fascinates us
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    more than other diseases.
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    But what is it exactly?
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    Well, it's hard to acquire Ebola,
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    but if you do, the risk
    of a horrible death is high.
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    Why?
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    Because right now, we don't have any
    effective therapy or vaccine available.
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    And so that's the clue.
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    We may have it someday.
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    So we rightfully fear Ebola
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    because it doesn't kill
    as many people as other diseases.
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    In fact, it's much less transmissible
    than viruses such as flu or measles.
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    We fear Ebola because of the fact
    that it kills us and we can't treat it.
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    We fear the certain inevitability
    that comes with an Ebola.
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    Ebola has this inevitability
    that seems to defy modern medical science.
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    But wait a second, why is that?
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    We've known about Ebola since 1976.
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    We've known what it's capable of.
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    We've had ample opportunity to study it
    in the 24 outbreaks that have occurred.
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    And in fact, we've actually had
    vaccine candidates available now
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    for more than a decade.
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    Why is that those vaccines are just
    going into clinical trials now?
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    This goes to the fundamental problem
    we have with vaccine development
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    for infectious diseases.
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    It goes something like this:
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    the people most at risk for these diseases
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    are also the ones least able
    to pay for vaccines.
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    This leaves little in the way
    of market incentives
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    for manufacturers to develop vaccines
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    unless there's large numbers of people
    who are at risk in wealthy countries.
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    It's simply too commercially risky.
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    As for Ebola, there is absolutely
    no market at all,
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    so the only reason we have two vaccines
    in late stage clinical trials now
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    is actually because
    of a somewhat misguided fear.
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    Ebola was relatively ignored
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    until September 11 and the anthrax attacks
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    when all of a sudden,
    people perceived Ebola
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    as potentially a bioterrorism weapon.
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    Why is it that the Ebola vaccine
    wasn't fully developed at this point?
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    Well partially, because
    it was really difficult
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    or thought to be difficult
    to weaponize the virus,
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    but mainly because of the financial risk
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    in developing it,
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    and this is really the point.
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    The sad reality is, we develop vaccines
    not based upon the risk
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    the pathogen poses to people,
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    but on how economically risky it is
    to develop these vaccines.
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    Vaccine development
    is expensive and complicated.
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    It can cost hundreds of millions of dollars
    to take even a well-known antigen
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    and turn it into a viable vaccine.
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    Fortunately for diseases like Ebola,
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    there are things we can do
    to remove some of these barriers.
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    The first is to recognize
    when there's a complete market failure.
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    In that case, if we want vaccines,
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    we have to provide incentives
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    or some type of subsidy.
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    We also need to do a better job
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    at being able to figure out which
    are the diseases that most threaten us.
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    By creating capabilities within countries,
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    we then create the ability
    for those countries to create
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    epidemiologic and laboratory networks
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    which are capable of collecting
    and categorizing these pathogens.
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    The data from that then can be used
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    to understand the geographic
    and genetic diversity,
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    which then can be used
    to help us understand
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    how these are being changed
    immunologically
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    and what type of reactions they promote.
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    So these are the things that can be done,
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    but to do this, if we want to deal
    with a complete market failure,
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    we have to change the way we view
    and prevent infectious diseases.
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    We have to stop waiting
    until we see evidence
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    of a disease becoming a global threat
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    before we consider it as one.
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    So for Ebola,
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    the paranoid fear of an infectious disease
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    followed by a few cases
    transported to wealthy countries
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    led the global community to come together,
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    and with the work
    of dedicated vaccine companies,
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    we now have these
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    two Ebola vaccines in efficacy trials
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    in the Ebola countries.
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    (Applause)
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    And a pipeline of vaccines
    that are following behind.
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    Every year, we spend billions of dollars
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    keeping a fleet of nuclear submarines
    permanently patrolling the oceans
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    to protect us from a threat
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    that almost certainly will never happen,
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    and yet we spend virtually nothing
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    to prevent something as tangible
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    and evolutionary certain
    as epidemic infectious diseases.
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    And make no mistake about it,
    it's not a question of if but when.
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    These bugs are going to continue to evolve
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    and they're going to threaten the world,
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    and vaccines are our best defense.
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    So if we want to be able to prevent
    epidemics like Ebola,
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    we need to take on the risk
    of investing in vaccine development
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    and in stockpile creation,
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    and we need to view this then
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    as the ultimate deterrent:
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    something we make sure is available,
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    but at the same time praying
    we never have to use it.
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    Thank you.
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    (Applause)
Title:
The troubling reason why vaccines are made too late ... if they’re made at all
Speaker:
Seth Berkley
Description:

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Video Language:
English
Team:
closed TED
Project:
TEDTalks
Duration:
07:17

English subtitles

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