Zika Virus outbreak: More babies born with birth defects

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Zika Virus outbreak: More babies born with birth defects

#1  Postby DougC » Jan 22, 2016 12:42 am

http://www.bbc.co.uk/news/world-latin-america-35368401

B.B.C. Article

Brazil says the number of babies born with suspected microcephaly or abnormally small heads since October has now reached nearly 4,000.
In the worst affected area, about 1% of newborns have suspected microcephaly.

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The Brazilian authorities believe the increase is caused by an outbreak of Zika virus. Just 150 babies were born with microcephaly in 2014.
The brain condition can be deadly or cause intellectual disability and developmental delays.
Colombia's health minister has advised women there to delay pregnancy.

(Continues)



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This thread title has been edited on request of the OP as this discussion no longer about just Brazil. kiore
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Re: Brazil Zika outbreak: More babies born with birth defects

#2  Postby kiore » Jan 22, 2016 3:45 am

This current outbreak is affecting a wide geographical range and the vector mosquito has an even wider range so the possibility of expansion remains high. One of the reasons why this has and could spread quite quickly is that most infected people do not have significant symptoms. Cases have been reported around the world wherever the Aedes mosquito is found, aside from the Americas outbreaks have occurred in Africa, South East Asia and the Pacific Islands.
A vaccine would be a useful thing but really what is needed is a war on Aedes, vector for the related Dengue Fever, Chikungunya and Yellow Fever.
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Re: Brazil Zika outbreak: More babies born with birth defects

#3  Postby laklak » Jan 22, 2016 4:42 am

Yep, time to exterminate the little fuckers. Around here they're responsible for West Nile and eastern equine encephalitis. Actually, lets just kill ALL the little bloodsucking shitheads.
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Re: Brazil Zika outbreak: More babies born with birth defects

#4  Postby kiore » Jan 22, 2016 5:51 am

laklak wrote:Yep, time to exterminate the little fuckers. Around here they're responsible for West Nile and eastern equine encephalitis. Actually, lets just kill ALL the little bloodsucking shitheads.


Really not even necessary to kill everyone of them, just seriously reduce their numbers a good start. I hate mosquitoes, being a past victim of Dengue Fever and living in malaria land for years I have no tolerance to them.
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Re: Brazil Zika outbreak: More babies born with birth defects

#5  Postby RNeto » Jan 22, 2016 12:53 pm

Things are getting uglier around our trenches here, this sums up to a shitty education, dirty urban environments and a rainny season that improves the conditions to the mosquito reproduction.

Now some proposals of plane sprayed insecticides are arising, but discussions conducted here are always led by several political tone and can never be taken serious (but on this matter I don’t know how different it would be in other countries or regions, aside the Nordic, maybe).

Other preventive actions have been failing systematically through the years.
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Re: Brazil Zika outbreak: More babies born with birth defects

#6  Postby DougC » Jan 24, 2016 11:30 pm

B.B.C. - Zika virus travel warnings spread to Africa and Oceania

B.B.C. - Zika virus: Three Britons infected, say health officials
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Re: Brazil Zika outbreak: More babies born with birth defects

#7  Postby kiore » Jan 25, 2016 4:37 am

Is a difficult outbreak, biggest issue is that it has been considered a very mild illness until recently. The extent of this current outbreak means it is likely to spread to other areas very easily. Many countries have the Aedes vector present so is possible this will become widespread quickly.
Urgent action to reduce mosquito populations in affected areas essential, however the response from the Brasilian Health Ministry prior to the Olympics not very reassuring.
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Re: Brazil Zika outbreak: More babies born with birth defects

#8  Postby DougC » Jan 26, 2016 5:05 am

B.B.C. - 'likely to spread across Americas' says WHO
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Re: Brazil Zika outbreak: More babies born with birth defects

#9  Postby quas » Jan 26, 2016 5:16 am

The thing is, if you eliminate mosquitoes, how will the animals that feed on mosquitoes survive? Lizards, birds, fishes, frogs, dragonflies, spiders, bats...
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Re: Brazil Zika outbreak: More babies born with birth defects

#10  Postby Aca » Jan 26, 2016 6:08 am

http://www.nature.com/news/2010/100721/ ... 6432a.html

Eradicating any organism would have serious consequences for ecosystems — wouldn't it? Not when it comes to mosquitoes, finds Janet Fang.
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Re: Brazil Zika outbreak: More babies born with birth defects

#11  Postby RNeto » Jan 26, 2016 10:43 am

On this sense the "method" selected for exterminating the mosquitoes could do more harm to the other species than the absence of the flies itself.

For instance, airplane thrown insecticides could be more effective to the combat against the mosquitoes, but there would be an unavoidable impact over other populations, like those on lakes or the rest of the urban environments.
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Re: Brazil Zika outbreak: More babies born with birth defects

#12  Postby quas » Jan 26, 2016 10:52 am

Aca wrote:http://www.nature.com/news/2010/100721/full/466432a.html

Eradicating any organism would have serious consequences for ecosystems — wouldn't it? Not when it comes to mosquitoes, finds Janet Fang.


It seems like the article is saying a different thing altogether? When we talk about protecting the ecosystem, we are mostly interested in maintaining the status quo. Whereas the article seems to be saying that the ecosystem is not that delicate and will survive the extinction of several species (just as it had done many, many times).
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Re: Brazil Zika outbreak: More babies born with birth defects

#13  Postby kiore » Jan 27, 2016 12:34 am

Is not needed to eradicate the mosquitoes, the easiest option is to seriously reduce the population frequently until you have reduced the number of mosquitoes carrying the virus which will tend to be older females. Eliminate breeding grounds near human habitation, fog or spray the adults twice a week for a while and you will have a 'young' population not infected and the human population free of the virus so that even if bitten by the mosquito the chain is broken.

I do not mean this to sound easy, but this is what has worked in the past, it takes hard work and commitment to achieve but is the best bet currently. OK would be great to turn a large majority of the mosquito population to harmless males and crash the population, but is still required to wipe out the older female population living in close proximity to people which will be disproportionately infected.
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Re: Brazil Zika outbreak: More babies born with birth defects

#14  Postby kiore » Jan 28, 2016 4:42 am

Just to reset this discussion to current knowledge, here is the link to PAHO/WHO/OMS latest FAQs on the outbreak:
http://www.paho.org/hq/index.php?option ... 63&lang=en
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Re: Brazil Zika outbreak: More babies born with birth defects

#15  Postby mindhack » Jan 28, 2016 10:27 am

A mosquito expert yesterday said on television it's only a matter of time before the virus reaches Europe. He said the virus will be transported in by an infected person who is then bitten by a south European type of mosquito of some sort, which will then become a carrier and spread the virus further by stinging other people.
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Re: Brazil Zika outbreak: More babies born with birth defects

#17  Postby Teague » Jan 28, 2016 11:49 am

CONDITIONS IDEAL FOR MOSQUITO BREEDING

Wet, warm weather in many parts of the State and the recent release of water into some previously dry forest areas have created excellent mosquito breeding conditions, Victoria's Chief Health Officer, Dr Robert Hall said today.

http://hnb.dhs.vic.gov.au/web/pubaff/me ... e000148799



It is a very common misconception among the public that streams, ponds and lakes and are mosquito breeding habitats. Mosquitoes cannot breed successfully in flowing water, and streams can only produce mosquitoes when they dry up and leave shallow, stagnant puddles in the stream bed. Although it is true that your average farm pond can produce a few mosquitoes (e.g., 1-2 mosquitoes per 50 ft of shoreline per week), these would all originate from narrow bands of emergent vegetation or stagnant inlets along the shoreline. A pond that has several hundred square feet of shallow marshy habitat on one end will be able to produce more mosquitoes. However, if a pond is deep, contains fish, or has been in existence for long enough to develop resident populations of predatory species (insects, frogs, spiders, etc.), it will not produce enough mosquitoes to be of any consequence. In contrast, a temporary body of water such as a 10 ft. long x 1 ft. wide x 6 in. deep section of flooded ditch or wheel rut can easily produce a thousand mosquitoes in a short period of time.

Mosquito larvae associated with permanent bodies of water generally live where the water is shallow (1 ft or less), and weeds, debris, emergent grasses or some sort of aquatic vegetation shelters the mosquito larvae from fish and other predators. Relatively few mosquito species actually breed in permanent bodies of water such as marshes or swamps. Most of the mosquito species associated with marshes or swamps actually breed in temporary pools along the margins of these habitats.

Any temporary body of water that is present for more than a week can be a mosquito breeding habitat.

http://www.vdh.virginia.gov/lhd/Central ... bitats.htm
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Re: Brazil Zika outbreak: More babies born with birth defects

#18  Postby mindhack » Jan 28, 2016 12:06 pm


Years ago a comedian made a tv "commercial" for a similar product, the "Star Wars Mosquito Defense System". :grin:

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Re: Brazil Zika outbreak: More babies born with birth defects

#19  Postby Teague » Jan 28, 2016 1:41 pm

The mosquito is the most dangerous animal in the world, carrying diseases that kill one million people a year. Now the Zika virus, which is carried by mosquitoes, has been linked with thousands of babies born with brain defects in South America. Should the insects be wiped out?

There are 3,500 known species of mosquito but most of those don't bother humans at all, living off plant and fruit nectar.

It's only the females from just 6% of species that draw blood from humans - to help them develop their eggs. Of these just half carry parasites that cause human diseases. But the impact of these 100 species is devastating.

"Half of the global population is at risk of a mosquito-borne disease," says Frances Hawkes from the Natural Resources Institute at the University of Greenwich. "They have had an untold impact on human misery."


http://www.bbc.co.uk/news/magazine-35408835


Interesting.
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Re: Brazil Zika outbreak: More babies born with birth defects

#20  Postby Thommo » Jan 28, 2016 2:53 pm

kiore wrote:Just to reset this discussion to current knowledge, here is the link to PAHO/WHO/OMS latest FAQs on the outbreak:
http://www.paho.org/hq/index.php?option ... 63&lang=en


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