Thailand confirmed more recurrences of the deadly bird flu virus on several farms in two northern provinces on Saturday, just days after fresh outbreaks near Bangkok.
"Bird flu is confirmed in both places and we have already told OIE," said Yukol Limlaemthong, head of the Agriculture Ministry's livestock department, referring to the Paris-based World Organisation for Animal Health.
Agriculture and Co-operatives minister Somsak Thepsuthin told reporters that around 200 chickens had died on each of several farms in the northern provinces of Uttaradit and Sukothai, but did not say how many farms were hit.
Another 1,000 chickens had been killed in an attempt to contain the outbreaks, he said.
Chicken deaths on small farms in the north-eastern province of Mukdahan were also being investigated as possible bird flu infections and the results would be known within the next two days, Yukol said.