Earlier, the Welsh Assembly said it was investigating a suspected outbreak of bird disease at a farm in North Wales.

The H5N1 virus is hard for humans to catch and is mainly a bird disease.

For the moment, H5N1 is hard for humans to catch and is essentially a bird disease.

Although it remains a bird disease, experts still fear it could kill millions once it learns how to pass efficiently among people.

Health officials in the Netherlands have slaughtered more than 100,000 chickens, hoping to contain a contagious bird disease.

Although experts have warned of an H5N1 pandemic for years now, the virus remains largely a bird disease.

There are hopes an outbreak of Newcastle bird disease can be contained within the Papua New Guinea town of Wutung on the Indonesian border.

Although H5N1 remains a bird disease, experts say the virus could spark a pandemic if it ever spreads efficiently among people.

Although it remains a bird disease, it is known to have infected 270 people since late 2003, killing 164 of them.