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Airborne flu detection at bird markets

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arirish View Drop Down
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    Posted: September 03 2016 at 6:50am
Airborne flu detection at bird markets hints at human exposure risk

Viable avian flu virus is easily detectable in the air of live-poultry markets, which may explain why those who visit markets but don't have direct contact with the birds become infected, according to air sampling from sites in China and Hong Kong.

A research team based at Hong Kong University isolated three subtypes during their sampling activities: H5N6, H7N9, and H9N2. They reported their findings today in the latest edition of Eurosurveillance.

Their results come just weeks after a report from Chinese researchers who isolated H5N6 during bioaerosol surveillance at live-poultry markets in the Guangdong province city of Zhongshan.

Role of defeathering devices

For the new study, the team sampled three different types of poultry markets in Guangzhou, which also in Guangdong province: a wholesale market, a mixed-animal market, and a retail market. They also obtained samples from a wholesale market in Hong Kong.

Using two different types of biaerosol samplers, the researchers collected air samples near poultry at different intervals in 2014 and 2015. They also collected environmental swabs.

Viral RNA and infectious virus of H5N6, H7N9, and H9N2 strains were detected mainly in particles 1 micrometer or larger from the air collected in poultry markets in Guangzhou. H9N2 from different lineages was detected in both the air and environment during all the testing months.

In terms of volume of airborne virus detected, use of defeathering devices increased the quantity of virus, while market closures reduced the amount of particles carrying viral material.

The researchers said the airborne virus findings are consistent with earlier findings of viral RNA in poultry farm air and from experiments in the United States that found infectious influenza viruses at swine barns and live-pig markets.

They said their results underscore the possibility of airborne transmission among poultry or between poultry and humans and could explain how some patients became infected with H7N9 in China despite no direct contact with poultry or poultry stalls.

http://www.cidrap.umn.edu/news-perspective/2016/09/airborne-flu-detection-bird-markets-hints-human-exposure-risk
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jacksdad View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jacksdad Quote  Post ReplyReply Direct Link To This Post Posted: September 03 2016 at 8:00am
Interesting findings, but will they act on it? Or will it be something else to point a finger at after a major pandemic is unleashed on the world, like factory farming, crappy biosecurity and misuse of antivirals in food animals.
It's all very well for researchers to conduct studies like this, but we never seem willing to make the changes necessary to avoid the possible consequences. I understand that vendors and local/government officials in places like Guangdong probably don't give a damn, and Big Ag will never let anything get in the way of profit, but the stakes are so high that you have to wonder what everyone involved is thinking.

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Post Options Post Options   Thanks (0) Thanks(0)   Quote wtaumme Quote  Post ReplyReply Direct Link To This Post Posted: September 19 2016 at 5:15am
These types of cases are always found in birds and animals so try to eat vegan, as I think that plants don't suffer from such flues and viruses.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Technophobe Quote  Post ReplyReply Direct Link To This Post Posted: September 19 2016 at 10:56am
Yes they are.  It is also true that the closer the relative, the more diseases you have in common.  However, flu is not just caught by eating the infected and the healthiness of a varied diet is a better bet.

But, here is another however: Don't eat your relatives - so Avoid primates (including rabbits), eat very little mammals and try to eat a vegan diet for most of the time, if you want to lead a long healthy life. 

Most meat eating people eat far more than is healthy.  One small portion (about 100g) MONTHLY is enough for optimum health.  The rest is just for pleasure (meat tastes nice) or laziness (vegan recipes require more cooking and preparation time).

These days the veg is less than healthy too.  Pesticide residue is a nasty consequence of mass production and some of those are cumulative.  So grow your own where possible and if you buy your veg at the supermarket, don't cook it in aluminum pans (they react with some pesticides and form plaques which attack neural tissue).

Of course, we will all die some day: so you could just eat what you like.
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