Bird flu alarm drives world towards once-shunned vaccines

By Joe Silverstein; Edited by News Gate Team

Channel : @Reuters


  • Severe bird flu kills millions of fowl worldwide
  • EU on track to allow bird flu vaccinations
  • Mexico, Ecuador recently launched vaccination campaigns
  • U.S. government reluctant due to fears of trade barriers

France’s CASTELNAU-TURSAN, February 17 (Reuters) – Herve Dupouy, a French duck farmer, has had to cull his flock four times since 2015 to stop the spread of bird flu, but now that the farm is once more in the path of a devastating outbreak, he says it’s time to accept a remedy that was formerly frowned upon: vaccination.

On his farm in Castelneu-Tursan, southwest France, Dupouy stated, “The goal is that our animals don’t get sick and that they don’t spread the virus.” “Collecting deceased animals is not our business as farmers,”

As Dupouy discovered, an increasing number of governments around the world are rethinking their objections to vaccines because killing or confining birds has not been able to stop bird flu from decimating commercial flocks year after year.

Reuters spoke to senior officials in the world’s largest poultry and egg producers, along with vaccine makers and poultry companies. They all said there had been a marked shift in the approach to vaccines globally due to the severity of this year’s bird flu outbreak, though the biggest exporter of poultry meat, the United States, told Reuters it remains reluctant.

In addition to the expense of killing millions of chickens, ducks, turkeys, and geese, governments and scientists are growing increasingly concerned that if the virus spreads to humans and becomes endemic.

Marc Fesneau, France’s minister of agriculture, stated that this is the reason why bird flu is a concern for every nation in the globe.

“There is no need to worry, but we must draw lessons from the past on these issues. We are investigating vaccinations globally because of this “He informed Reuters.

The majority of the largest poultry producers worldwide have rejected vaccinations out of concern that they would conceal the spread of bird flu and hurt exports to nations that have banned vaccinated chicken out of concern that sick birds might evade detection.

The International Organisation for Animal Health (WOAH) told Reuters that since early last year, bird flu, also known as avian influenza, has devastated farms all over the world, killing more than 200 million birds either directly from the illness or as a result of mass culls.

The enormous slaughters from the previous year also caused egg prices to soar, adding to the world food crisis.


While Ecuador announced this month that it planned to vaccinate more than two million birds after the virus infected a 9-year-old kid, Mexico began emergency vaccinations last year.

France is on track to start vaccinating poultry in September, agriculture minister Fesneau told Reuters, before the return of migrating wild birds that can infect farms.

The EU, meanwhile, agreed last year to implement a vaccine strategy across its 27 member states.

Brussels has also normalised its poultry vaccination rules, which are due to come into force next month. They will ensure poultry products and day-old chicks can be traded freely within the bloc, a European Commission spokesperson told Reuters.

China, which consumes most of its poultry production domestically, has been vaccinating against avian influenza for nearly 20 years and has managed to sharply reduce outbreaks.

But the biggest producer of poultry meat in the world, the United States, is holding out for now.

The United States has been hit hardest worldwide in the latest outbreak with a toll of more than 58 million birds in the past year, followed by Canada, while France has suffered the most within the EU, WOAH data showed.

But the fear of trade restrictions remains centre stage for countries reluctant to vaccinate poultry against bird flu.

[1/6] A French farmer looks at ducks in their enclosure at a poultry farm in Castelnau-Tursan, France, January 24, 2023. REUTERS/Stephane Mahe
[2/6] Ducks are seen inside a poultry farm in Castelnau-Tursan, France, January 24, 2023. REUTERS/Stephane Mahe
[3/6] Ducklings are seen inside a poultry farm in Castelnau-Tursan, France, January 24, 2023. REUTERS/Stephane Mahe
[4/6] A French farmer looks at ducks in their enclosure at a poultry farm in Castelnau-Tursan, France, January 24, 2023. REUTERS/Stephane Mahe
[5/6] Ducks are seen inside a poultry farm in Castelnau-Tursan, France, January 24, 2023. REUTERS/Stephane Mahe
[6/6] Ducks are seen in their enclosure at a poultry farm in Castelnau-Tursan, France, January 24, 2023. REUTERS/Stephane Mahe

While vaccines can reduce death rates, some vaccinated birds could still contract the disease and transmit it, effectively masking the spread of the virus.

That’s why some big buyers of poultry meat and live birds have banned imports from countries where vaccines are permitted, for fear of bringing in the virus as well.

Bird flu can also mutate rapidly and reduce the efficacy of vaccines while programmes are costly and time consuming, as shots often need to be administered individually. And even once birds have been vaccinated, flocks need to be monitored.

“The use of a vaccine at this time would have detrimental impacts on poultry trade while still necessitating response activities such as quarantine, depopulation, and surveillance testing,” the U.S. Department of Agriculture (USDA) told Reuters.

Given trade restrictions on vaccinated poultry, bilateral negotiations would be needed to clear exports to those markets and avoid unfair competition, Philippe Gelin, chief executive of France’s LDC (LOUP.PA), one of Europe’s largest poultry firms.

French minister Fesneau told Reuters that Paris was negotiating with its non-EU trade partners to allow exports of vaccinated poultry while there were also bilateral talks at the EU level with countries outside the bloc.


Brazil, the world’s largest poultry exporter, has so far avoided an outbreak – and the need for vaccines – though the virus is getting closer with several of its neighbours including Bolivia reporting outbreaks.

But countries such as France, which spent 1.1 billion euros ($1.2 billion) last year compensating poultry farmers for their losses, believe it’s time to bite the vaccination bullet.

“This is a huge economic loss,” said Gilles Salvat, deputy director of the research division at French health security agency ANSES. “We won’t avoid occasional introductions (of the virus) via wildlife or via a contaminated environment, but what we want to avoid is these occasional introductions spreading throughout the country.”

As part of the EU-wide strategy, France is carrying out tests on vaccines for ducks, which are very receptive to the virus and remain asymptomatic for many days, increasing the risk of transmission to other farms.

The Netherlands is testing vaccines on egg-laying hens, Italy is doing the same on turkeys and Hungary on Pekin ducks, with the results from the EU trials expected in the coming months.

France’s Ceva Animal Health, one of the main companies developing bird flu vaccines along with Germany’s Boehringher Ingelheim, said initial results were “very promising”, notably by sharply reducing the excretion of the virus by infected birds.

Ceva said it was using the mRNA technology used in some COVID shots for the first time in poultry vaccines.

The global market for bird flu vaccines would be about 800 million to 1 billion doses per year, excluding China, said Sylvain Comte, corporate marketing director for poultry at Ceva.

Although the risk to humans from bird flu remains low, and there have never been cases of human-to-human transmission, countries must prepare for any change in the status quo, the World Health Organization said last week.

The recent COVID crisis has shown the risk of a virus found in animals mutating or combining with another influenza virus to make the jump to humans – and lead to a global pandemic.

The H5N1 strain prevalent in the latest bird flu outbreak has killed several mammals, including minks in Spain, foxes and otters in Britain, a cat in France and grizzly bears in the United States.

“Without being alarmist, we should be careful and not let this virus circulate too intensively and for too long,” said Salvat at French agency ANSES.

($1 = 0.9351 euros)

Reporting by Sybille de La Hamaide and Stephane Mahe in France, Cassandra Garrison in Mexico, Tom Polansek in Chicago, Ana Mano in Sao Paulo, Phil Blenkisop in Brussels, Michael Hogan in Hamburg, Nigel Hunt in London, Sarah El Safty in Cairo and Dominique Patton in Beijing; Editing by David Clarke

By Joe Silverstein; Edited by News Gate Team

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