New bird flu outbreaks test Thai defences

Thailand, among the countries hardest hit by bird flu, appeared to turn a corner this year in its fight against the virus.

The disease had not shown up in humans or chickens for nearly eight months, fuelling hopes that a widely praised government and industry campaign had finally brought the H5N1 virus to heel.

But a new human death and fresh outbreaks in poultry in late July have exposed serious gaps in Thailand’s defences and forced officials to rethink their battle plan.

“It’s not entirely a surprise,” said Laurence Gleeson, a bird flu expert with the U.N. Food and Agriculture Organization (FAO) who will meet Thai officials next week to review the country’s surveillance and containment campaign.

“This is a disease that is difficult to eliminate completely,” he said of H5N1, which has killed 134 people worldwide, including a 15th Thai on July 24.

An outbreak in the northern province of Pichit, where the 17-year-old youth died, revealed shortcomings officials are now scrambling to fix.

Despite the threat of fines and public awareness campaigns, the youth’s family did not report their sick chickens, fearing authorities would cull the rest of the flock.

Critics say the compensation paid to farmers, worth 75 percent of the market price, should be increased.

Instead, the government says fines for failing to report bird deaths, rarely imposed in the past year, will now be enforced strictly in all 76 provinces.

Farmers who do not report bird deaths within 12 hours will face a 4,000 baht ($105) fine or two months’ jail, Agriculture Minister Sudarat Keyuraphan said.

The teenager’s death also triggered a review of how doctors administer Tamiflu, the most commonly used anti-bird flu drug.

Doctors believed the youth had dengue fever and did not give Tamiflu despite his known close contact with poultry.

New guidelines will now require doctors to administer Tamiflu, most effective within 48 hours after symptoms appear, in suspected cases rather than wait for laboratory results.

COVER UP?

Thailand, the world’s fourth-largest chicken exporter until the virus began ravaging poultry flocks in late 2003, was widely criticized for not reporting the virus when it arrived.

But since then, the government has won international praise for its surveillance and control efforts, involving 13 government ministries and two million volunteers who scoured villages and live markets for sick poultry.

But no system is foolproof and constant fine-tuning is needed against a virus still evolving, animal health experts say.

Critics say Thailand’s success has bred complacency and led some local officials to try again to hide outbreaks.

“Investigations remain to be completed, but it appears local authorities even colluded with villagers to cover up initial reports of avian flu,” the Bangkok Post said in an editorial.

Sudarat denied that, but she removed Pichit’s livestock chief after he admitted fighting-cock owners had resisted efforts to cull their birds, blamed for spread the virus.

While Sudarat has predicted Thailand could be free of bird flu in three years, chicken exporters have accepted it could linger for much longer.

About 24 firms, which operate 1,734 farms, agreed this month to adopt a compartment system of poultry raising that includes a one-km (1,000 yard) “buffer zone” around commercial farms to keep out infection from wild birds and poultry raised in backyards.

“It should be a national policy,” said Payungsak Tanagul, a biosecurity expert at poultry exporter Chareon Pokphand, which uses the system on 856 of its farms but cannot export raw chicken to major importers such as Japan and the European Union.

“If it is successful, the advantage is that we can export raw chicken again because we are ensuring it is free from disease.”

Provided by ArmMed Media
Revision date: June 22, 2011
Last revised: by Andrew G. Epstein, M.D.