3 dengue fever infections blamed on mosquitoes in Yoyogi Park

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  • 1

    Farmboy

    Japanese officials say they have not detected the dengue virus in mosquitoes caught in Yoyogi Park but they will disinfect areas where sufferers were bitten.

    Better check the larvae in the pond, and in bodies of water around the park. It's good they're going after this aggressively, but maybe they should widen the search for the source.

  • 2

    onagagamo

    Good luck eradicating that!

  • -5

    Novenachama

    In addition to the spraying of some chemicals insecticides like they did at Yoyogi park, I wonder if they have considered an additional option if conditions get worse like the new high-tech strategies that involves releasing of genetically manipulated mosquitoes back into the wild. It is suppose to be able to overtake the wild mosquito population that transmits disease to humans. However the best defense against the Dengue fever appears to be by building a strong immune system against the nasty insect borne virus. In other words by supporting your body's own natural ability to defend itself against pathogens, you will not only have resistance to Dengue fever but to every other infectious illness that comes your way.

  • 1

    jerseyboy

    Good luck to these three. My fiance is from the Philippines, and her niece almost died from dengue last fall. Good that they apparently caught these three cases early. Certainly not something you would normally worry about in Tokyo.

  • -3

    yugodabe

    Must have been spread through the recent festivals at Yoyogi park, all these cultural festivals are a feast for these mosquitoes.

  • 1

    CrazyJoe

    The mosquito that causes Dengue ((pronounced dhen-gey) is a day biting mosquito, so be especially careful not to be bitten during the day.

  • -3

    toshiko

    Aren'r=t there DDT spray in Japan now?

  • 1

    Tokiyo

    DDT is a terrible choice of pesticide that kills not only bugs, but damages the egg laying capacity of birds that consume them. No, no DDT please

  • 1

    rickyvee

    i wonder how many other people caught it but didn't know it was dengue fever. i hope this isn't the tip of the iceberg. for adults, it's not a big deal but for kids and infants, it could be fatal.

  • -2

    Disillusioned

    Japanese officials say they have not detected the dengue virus in mosquitoes caught in Yoyogi Park but they will disinfect areas where sufferers were bitten.

    Eh? So, why are they spraying there?

  • 1

    toshiko

    @tokiyo; During WW II, soldiers brought back mosquito eggs with their luggages (bags) so, we had to spray DDT outside. Not on top of trees for birds as we did not climb trees, then. Takeda Yakuhin sdistgributed DDT. for mosquitoes, we jusgt waited it rests on arm and hit to kill.

  • 0

    Educator60

    Disillusioned "Japanese officials say they have not detected the dengue virus in mosquitoes caught in Yoyogi Park but they will disinfect areas where sufferers were bitten.

    Eh? So, why are they spraying there?"

    Because the three students who are confirmed to have dengue had recently been going to the park to practice a dance routine for an upcoming school festival and had been bitten by mosquitos there and there was no other likely common factor.

    The news showed workers spraying and reported they were spraying insecticide but didn't mention what exactly was used.

  • -1

    Ryokai

    Must be due in part to the tropical weather in Tokyo, high heat, rainfall and humidity - but it doesn't explain how the dengue mosquitoes got to Japan, on a ship from the Philippines?

  • 0

    Educator60

    Ryokan "but it doesn't explain how the dengue mosquitoes got to Japan"

    I saw a couple of experts on TV say that if people who had got dengue while overseas (known cases are about 200 per year) were bitten by mosquitos after their return to Japan, those insects would then be infected and could pass it on to other people they bite.

  • 0

    smithinjapan

    Ah, the old 'bone-break' fever. A close friend of mine got it in Vietnam (not the war, but humanitarian work well after) in Hue and nearly died from it -- and this guy was in GREAT shape. Not a whole lot you can do, but try to be careful, peeps.

    CrazyJoe: Very true, but in well lit areas they are also quite active at night. Don't crack out the mosquito nets around the futon just yet, but I wouldn't leave the windows or doors open while hanging out laundry or what have you.

  • 0

    Kaerimashita

    Awful. Educator is right about how dengue gets to Japan.

  • 0

    Yubaru

    Must have been spread through the recent festivals at Yoyogi park, all these cultural festivals are a feast for these mosquitoes.

    And nothing to do with the fact that there are something like 13 million people living in Tokyo? And probably somewhere in the neighborhood of a gazillion or more mosquitoes?

  • -1

    Garthgoyle

    Noooo, not in Yoyogi park. That's like my favorite place to hang out with friends and meet people in Tokyo.

  • 1

    Kazumichi

    There must have been so many other bugs that died for humans...

    However, if dengue fever go pandemic, the medical expense on this will be horrendous.

  • 0

    Magnus Roe

    lol sofa investors.

  • 0

    Farmboy

    Noooo, not in Yoyogi park. That's like my favorite place to hang out with friends and meet people in Tokyo.

    Look on the bright side. This should really cut down on the crowds.

  • 0

    wipeout

    We had to spray DDT outside. Not on top of trees for birds as we did not climb trees, then.

    Well then and now, not all birds live in trees.

    But anyway, what you're suggesting is not relevant to the route by which DDT was accumulating as a toxin in birds.

  • 0

    toshiko

    @wipeout: write bad effect reports of DDT in past 70 years.

  • 0

    Novenachama

    Unfortunately there is no vaccine or specific medicine to prevent dengue fever and no conventional treatment. So the only defense is the eradication of the mosquitoes that carry it and measures to protect people from mosquito bites. Antiviral medications like the ones used for the flu have been found to have marginal value therefore treating it as you would the flu appears to be the best option to date. However hope is offered by research being carried out at America in a Biomedical center. They are studying how the disease takes hold and what factors might cause the more serious and deadly hemorrhagic fever. So there is process being made by the investigators.

  • 0

    chikv

    I keep failing to se why so much fuzz, Japan has over 200 human cases of dengue every year, the only novelty is that this 3 new cases were originated inside the country, but in comparison the risk for an epidemic is much higher from the imported cases.

    Even more, mosquitoes can not (yet) overwinter in Tokyo, so there is minimal chance to get a real epidemic before the mosquitoes go inactive and die (no direct human to human transmission). Even more, Japanese people generally have not yet been infected with the disease, so the most dangerous form of the disease (the hemorrhagic fever) would be almost impossible to see here because that requires a at least a second infection.

    But lets wait until global warming brings winter temperature a couple of degrees hotter and then you will have a real problem.

  • 0

    kurisupisu

    Imagine being attacked by mosquitoes all year round and living in Tokyo, one of the world's most expensive cities-ironic!

  • 0

    David Quintero Navarro

    I know it may sound a bit selfish but after the earthquakes, tsunamis, radiation, all we need is these stupid mosquitos with DENGUE!! I hope this is controlled ASAP!!

  • 0

    Farmboy

    @toshiko,

    If you are looking for confirmation of the toxic effects of DDT, there are thousands and thousands of articles. Here is one from a reputable source, with references. http://www.fws.gov/contaminants/info/ddt.html

  • 0

    jhagen

    I think JP should cover deeply this topic...onegaishimasu.

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