Chickens in farms in north Nigeria just tested positive for H5N1. Wild birds likely to get blame for spreading H5N1 to Nigeria. No matter that Nigeria not a (major) destination for ducks from areas hit with H5N1 before autumn. Smuggling of poultry should be investigated here.
High duties create an incentive to avoid tariff payments. Common illicit practices include under-invoicing, "round-tripping" foreign exchange, and smuggling... When the level of illicit, undocumented imports for particular products such as frozen chicken exceed that of legal imports, (this before Nigeria banned chicken imports; demand for chickens may be higher since, encouraging smuggling if so)
Infected chickens in battery cages; so surely unlikely to have contact with outside world, inc wild birds.
Thousands of bird deaths have also been reported in Kano state, which borders Kaduna. The federal ministries of health and agriculture have not provided information on how many birds have died or in which areas exactly. In Kano city, poultry farmers were trying to sell chickens at less than half the normal price, including from farms where birds have been dying. "I am confused. I lost 10 birds yesterday on my little farm and I cannot afford to lose more, so I came to the market to dispose of many of my birds at these ridiculous prices," said Ismail Musa.
http://www.cbsnews.com/stories/2006/02/08/health/main1294381.shtml - so, again, might cheap chickens have been smuggled into Nigeria?