A news report about the suicides of several Indian chicken farmers reminded me of an email which one of my old friends sent me a little over a week ago. Said friend was in audience as a bird ecologist from the US Geological Survey expounded on the etiology of the avian flu. The following is a slightly edited version of the email which contains some of the presentation’s key items. Be advised: the words below are that of my friend, rather than that of the bird ecologist, and the facts are recited from his memory. However, the facts are easily checked and links are provided, when found and/or available.
• H5N1 [avian influenza or 'bird flu'] is a poultry disease. It’s very deadly to chickens. Most that catch it die, within 48 hours. Wild birds carry it around and are more resistant.The great thing about being a woman with men friends who respect you is that they treat you like a delicate flower even when they know that you’re not. :-)• H5N1 is unusual because it started with domestic birds and spread laterally to wild birds and to humans. The normal progression for a bird virus is:
wild birds --> domestic birds --> domestic mammals --> people --> more people
• H5N1 went like this:
wild birds <=== domestic birds --> some people
• H5N1 first appeared in 1997 [in humans], in China. It percolated over there in Asia for many years, moving to Vietnam, Indonesia, Philippines, etc.
• Chinese officials responded to the disease by taking farmers’ chickens away from them (thereby destroying the farmers...they don’t have farm subsidy and insurance over there). Farmers responded by hiding their chickens, sending them to relatives, or not reporting the disease, so it spread even more.
• There is now a Vietnamese clade and a Chinese clade. Most of the vaccines being produced against it are only good against the Vietnamese clade. But the Chinese clade is the one that's spreading everywhere.
• In early 2005, H5N1 killed a ton of wild birds at a lake in China. Experts from all over the world went to study it identified the disease.
• The current mass spread began in May 2005. It moved from China across Asia to Turkey and Eastern Europe, east to west.
• The cause of the sudden breakout is a mystery. The move from east to west does not correspond to wild bird migration, which runs north to south. There’s been some spread north to south (it’s in Africa now too), but the biggest rush was east to west.
• The cause probably had to do with trade and shipping of chickens and other poultry. Also with smuggling of exotic birds. And migration too; [likely] a combination of all these things.
• Poultry imports and smuggling will probably bring H5N1 to North America [much more quickly] than wild bird migration.
• H5N1 will probably appear in North America eventually, but it is NOT certain it will appear this year.
• There is an Asian strain and a North American strain. North American H5N1 was already here. So when the newsmongers said “They’ve found H5N1 in Canada!” it means nothing. That strain was already here. It’s always been here [can’t find links to confirm the 'always' part –ed.], it’s not the same disease.
• Not a single human being has caught H5N1 from a wild bird; only from chickens.
• People catch H5N1 by direct physical contact through unsanitary practices (which I won’t describe, unless you ask me to).
• Heat kills it. You can’t get it from a cooked bird.As indicated.• H5N1 thrives in cool, moist places. It can survive in deep cold. There are geese that migrate from China OVER the Himalayas that can carry it into India. India is upset.
• Dogs and cats have caught it, from eating dead (i.e. uncooked) infected birds. There is currently no data on mortality rates among dogs and cats.I doubt that access to pertinent information on the bird flu would have prevented those Indian farmers from taking their lives, since, as this article indicates, the Indian government has been trying to tell its constituents that it okay to consume cooked chickens, but, overall, Indians aren’t buying it. However, in societies which are more likely to believe information from acknowledged experts--along with individually-researched information--a little push in the right direction can help prevent panic from spreading.• Since 1997 to date, 191 people have caught H5N1. Of these, over 100 have died of it. So far it’s been a 57% mortality rate (that's fifty-seven).
• The mortality rate of the 1918-1919 Spanish flu pandemic, which killed millions, was only 2% (that's two).
• Nobody knew what a virus was in 1918.
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No one has caught H5N1 from another human. It's still just a chicken disease. Some day it might be human to human, or it may not ever be. But a 57% mortality rate is nothing to sniff at.
If you find a dead bird, remember that birds die all the time, from many, many different diseases. If you must dispose of it, wash well with hot water If you must eat it, cook it. If you must handle it, try to, you know.... restrain yourself. And wash.
H5N1 is a respectable disease. Chicken farmers should be concerned. The rest of us can ease up, but be respectful.
So keep chowing down on that *well-cooked* drumstick. For now.
WORST CASE SCENARIO: Reports says that President Bush is likely to approve a national response plan which has been prepared in case of mutation of the virus (90 million infected, 2 million dead as target figures).
(Thanks to D.)
WHO has a nice chart with info on bird flu outbreaks.
http://www.who.int/csr/don/2004_03_02/en/
Scroll down.
My posts are in this category:
http://blog.simmins.org/index.php/category/medicine/avian-flu/
Posted by: Chuck Simmins | April 18, 2006 at 06:29 PM
One note on the high (57%) mortality rate of the current H5N1 chicken-to-human cases; it may well be that it has been recorded as high because less-severe cases have not been recorded, only severe to fatal ones.
It could stil turn out to be as bad or worse than the 1918 pandemic, it might turn out to be far milder.
Posted by: steveH | April 18, 2006 at 08:00 PM
I wonder If Hillary will sell her TYSON stock ?
Posted by: skinner | April 19, 2006 at 10:15 PM
I really haven't seen anything that breaks the flu down tlike this, so I'm glad to have read this! I have been very curious how much stock to put in the scare over it. Thanks for these facts!
Posted by: fantasy fan | April 21, 2006 at 01:01 PM
I think maybe I first amelican
flew VICTIM i VERY DIZZY WITH UPSET BELLY . tODAY i TRY TO fly
NiCE DAY....... so VERY HAPPY
TRY SOMETHING NEW I Have trained pegions They Velly smart
FLY AWAY.......... FLY HOME
I can feed them and rift them up to check for eggs They live on top of house vely high vely smart I would fry THIS DAY, I
Scorthed taped 27 of my best frying birds to my body I use vely strong box tape with strong fibers 6 on each reg and 6 on each arm 6 on head and shoulders
Aso 6 pegions all around torso
I have 3 more I put 2 on buttocks for parachute and biggest one in flont for decoration and moral support
I reap off the building and we fry and fry !!! We are free
we circle we dart we lift higher and higher we glide and I yell HEY HEY ROOK AT ME then I sing I want to fry like an eagle In the sky ,,,.... And I am an were ROVIN it We AIRBORNE I can command my pegions and arways they obey I say "GO TO BIG PARK " and they rift way up
in sky and change directions
we hav to avoid airpranes
I see nice park bench and say down quick benth by pond open They obey me ,of course and we rearry good fo r randin on bench But stupid kid was throwing bread for birds in pond and pegions disobeyed and well velly bad end to landing I forgive pegions two days ago and now feeding them aso
Posted by: skinner | April 22, 2006 at 04:14 AM
I think a handful of humans are known to have caught it from other humans. In all cases they were taking care of the sick. But I've always wondered how they can be so sure of the mortality rate. They don't confirm every case of flu in this country. You have certain symptoms and that's assumed to be what you have. Lots of Asian people could have had H5N1, been moderately sick, had their symptoms treated, and not been counted in the statistics. How would they know?
The kids in Turkey who died got it from playing catch with the head of a chicken that their mother had beheaded before she cooked it. It's true that the cooked chicken won't give you the disease, but somebody has to slaughter and butcher those chickens. That's what irritated me about Chirac reassuring the populace by saying that all you have to do is avoid uncooked chicken. Who's going to cook them? Other chickens?
Posted by: Laura(southernxyl) | April 30, 2006 at 02:59 PM