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Poultry vaccines
Disease prevention by vaccination is an integral part of flock health management protocols. Active immunization using live vaccines is the current industry standard. Routinely used vaccines in chickens include MDV, NDV, IBV, and IBDV, and in turkeys NDV and HEV. Newer vaccines, including molecular recombinants in which genes of immunogenic proteins from infectious agents are inserted into a live viral vector, are also being examined for commercial use. Efforts are under way to enhance vaccine efficacy by the use of adjuvants, particularly cytokines. The vaccine delivery systems include in ovo injection, aerosol, spray, drinking water, eye drop, and wing web injection. The in ovo vaccination procedure is relatively new and at the present time it is used primarily to vaccinate broiler chickens against MDV. Birds respond to vaccines by developing humoral and cellular immune responses. There are two main types of vaccine available for poultry: live or killed.
The top World Health Organization (WHO) influenza expert said on Friday drug companies and governments had to speed up production of bird flu vaccines or risk a pandemic which could kill thousands of people.
Klaus Stohr, head of WHO's global influenza program, said the world was totally unprotected against the potentially lethal bird-borne virus, which experts fear could mutate and spread among humans, possibly as early as this winter.
Only two drug companies are developing human...
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A new and promising bird flu vaccine will be tested on chickens at a high security Geelong research facility.
The trial for the experimental vaccine to protect against the deadly H5N1 strain of avian influenza virus will start within weeks in a contained laboratory at CSIRO's Australian Animal Health Laboratory.
Once developed, the vaccine could be used to protect the world's poultry industry from further outbreaks and stop it spreading to Australia.
Vaccine research scientist Scott...
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Chiron Corp has won a contract to develop a human vaccine against a strain of bird flu that can infect people and "has the potential to trigger a modern-day pandemic," the U.S. government said on Tuesday.
The National Institute of Allergy and Infectious Diseases said it had awarded Chiron, of Emeryville, California, the contract to develop a vaccine against the H9N2 strain of avian influenza virus.
Avian influenza has been sweeping through poultry farms and markets across Asia this year,...
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A debate unfolding in Thailand over the merits of vaccinating poultry to save them from the lethal avian influenza virus may offer lessons to Asian countries with an eye towards the inoculation.
Driving it forward is Thailand's poultry sector, which is increasingly worried at the mixed messages coming from the government about vaccinating poultry.
''We fear that people will stop eating chickens if they know the poultry has been vaccinated,'' Chaweewan Kampha, president of the Poultry...
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The UN Food and Agriculture Organisation (FAO) will revise its guidelines to increase support of poultry vaccination in order to contain the spread of bird flu, according to a statement issued on 28 July. Until now, the FAO has recommended vaccination policies "where appropriate and practical".
Poultry populations that will be targeted for vaccination include hens that lay eggs for human consumption and young birds needed to replenish stocks devastated by bird flu. But the chief of the FAO...
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A United Nations agency will urge wider use of a vaccine among birds to help stop the continuing spread of a virus that is deadly to birds and a threat to human health, an official said Thursday.
The guidelines, to be issued by the end of August by the agency, the Food and Agricultural Organization, are needed because of new findings that the strain of the avian influenza virus has become a permanent fixture in many Asian countries, Dr. Joseph Domenech, chief of the agency's animal health...
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Avian flu has resurfaced in parts of Indonesia, prompting officials to launch a massive campaign to vaccinate chickens, the government announced Wednesday.
Dr. Tri Satya Putri Naipospos, director of animal health for the Ministry of Agriculture, said the government planned to distribute as many as 300 million doses of vaccine to poultry farms after reports that a few thousand chickens had died in the eastern part of Java island in July.
"We can say there have been new cases in several...
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As Thailand comes to grips with another outbreak of bird flu, the government appears keen to go down the risky road of vaccinating poultry as a potent countermeasure to stall the spread of this lethal disease.
On Tuesday, Deputy Prime Minister Chaturon Chaisaeng, who is heading a government committee to contain the H5N1 strain of avian flu, gave the green light for the country's researchers to experiment with vaccines best suited for this South-east Asian country.
The outcome of such...
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