Cockfighters spread Asian killer bird flu
From ANIMAL PEOPLE, March 2004:
BANGKOK, BEIJING–Cockfighters, cock
breeders, and public officials kow-towing to
them tried to pass the blame for spreading the
deadly H5N1 avian flu virus throughout Southeast
Asia to pigeons, sparrows, and even open-billed
storks.
Bad vaccines took some of the rap, too.
An attempt was even made, as the death
toll increased on factory farms, to attribute
the epidemic to free range poultry producers.
But as the H5N1 “red zones” expanded in
at least eight nations, the evidence pointed
ever more directly at commerce in gamecocks–and
at the efforts of cockfighters and cock breeders
to protect their birds from the culls and disease
outbreaks that had already killed more than 100
million chickens who were raised to lay eggs and
be eaten, as well as 22 people, most of them
children.
The pattern of the H5N1 outbreak
paralleled the spread of exotic Newcastle disease
through southern California and into Arizona
between November 2002 and May 2003.
Approximately 3.7 million laying hens were killed
to contain the Newcastle epidemic, but USDA
investigators believe it began among backyard
fighting bird flocks, advancing as gamecocks
were transported between fights. It apparently
invaded commercial layer flocks through
contaminated clothing worn by workers who
participated in cockfighting.