Calm down, chaps, it's fairly difficult to catch. DEFRA hasn't issued any guidance yet- if we have any vets they might advise here - but I've culled this from the CDC in America. I've highlighted anything I think is specially relevant.
Travelers' Health
Travelers' Health Home > Travel Notices > Outreak Notice
Outbreak Notice
Update: Human Infection with Avian Influenza A (H5N1) Virus
This information is current as of today, February 18, 2006, 12:16:44 PM
Updated: February 17, 14, 8 and 3, and January 13, 2006; December 27, November 18 and 3, October 28, 26, 21, 18, and 5, 2005
Released: September 23, 2005
Avian influenza A (H5N1) viruses usually affect wild birds but now are infecting and causing serious disease among poultry, such as chickens. Human infections with H5N1 viruses are rare, but have occurred during 2003 - 2006 in Cambodia, China, Indonesia, Iraq, Thailand, Turkey and Vietnam, with many cases resulting in death.
Most cases of H5N1 infection in humans are thought to have occurred from direct contact with infected poultry in affected countries. Therefore, when possible, care should be taken to avoid contact with live, well-appearing, sick, or dead poultry and with any surfaces that may have been contaminated by poultry or their feces or secretions. Transmission of H5N1 viruses to two persons through consumption of uncooked duck blood may also have occurred in Vietnam in 2005. Uncooked poultry or poultry products, including blood, should not be consumed. For current information about avian influenza and cumulative human case numbers, please see the World Health Organization (WHO) website at
http://www.who.int/csr/disease/avian_influenza/en/.
Countries that have experienced confirmed outbreaks of H5N1 infection among poultry and other birds in 2005-2006 include Azerbaijan, Bulgaria, Cambodia, China (including Hong Kong SAR), Croatia, Germany, Greece, Indonesia, Iran, Italy, Kazakhstan, Mongolia, Nigeria, Romania, Russia, Thailand, Turkey, Ukraine, and Vietnam. Poultry outbreaks were also reported in Japan, Laos, and Malaysia during 2004.
CDC remains in communication with WHO and continues to closely monitor the H5N1 situation in countries reporting human cases and bird outbreaks. The threat of a pandemic arising from novel influenza subtypes such as influenza A (H5N1) will be greatly increased if the virus gains the ability to spread from one human to another. Such transmission has not yet been observed. However, a few cases of limited person-to-person spread of H5N1 viruses have been reported, with no instances of transmission continuing beyond one person. For example, one instance of probable person-to-person transmission associated with close contact between an ill child and her mother is thought to have occurred in Thailand in September 2004.
H5N1 infections in humans can cause serious disease and death. A vaccine to protect humans against influenza A (H5N1) is not yet available, but a candidate vaccine is undergoing human clinical trials. The H5N1 viruses currently infecting birds and some humans are resistant to amantadine and rimantadine, two antiviral medications commonly used to treat influenza. The H5N1 viruses are susceptible to the antiviral medications oseltamivir and zanamivir, but the effectiveness of these drugs when used for treatment of H5N1 virus infection is unknown. For more information about influenza antiviral drugs, see
http://www.cdc.gov/flu/professionals/treatment/.
CDC has not recommended that the general public avoid travel to any of the countries affected by H5N1. Persons visiting areas with reports of outbreaks of H5N1 among poultry or of human H5N1 cases can reduce their risk of infection by observing the following measures:
Before any international travel to an area affected by H5N1 avian influenza
* Visit CDC's Travelers' Health website at
http://www.cdc.gov/travel to educate yourself and others who may be traveling with you about any disease risks and CDC health recommendations for international travel in areas you plan to visit. For other information about avian influenza, see CDC's Avian Influenza website:
http://www.cdc.gov/flu/avian/index.htm.
* Be sure you are up to date with all your routine vaccinations, and see your doctor or health-care provider, ideally 4–6 weeks before travel, to get any additional vaccination medications or information you may need.
* Assemble a travel health kit containing basic first aid and medical supplies. Be sure to include a thermometer and alcohol-based hand gel for hand hygiene. See the Travelers Health Kit page in Health Information for International Travel for other suggested items.
* Identify in-country health-care resources in advance of your trip.
* Check your health insurance plan or get additional insurance that covers medical evacuation in case you become sick. Information about medical evacuation services is provided on the U.S. Department of State web page Medical Information for Americans Traveling Abroad, at
http://travel.state.gov/travel/tips/hea ... _1185.html.
During travel to an affected area
* Avoid
all direct contact with poultry, including touching well-appearing, sick, or dead chickens and ducks. Avoid places such as poultry farms and bird markets where live poultry are raised or kept, and avoid handling surfaces contaminated with poultry feces or secretions.
* As with other infectious illnesses, one of the most important preventive practices is
careful and frequent handwashing. Cleaning your hands often with soap and water removes potentially infectious material from your skin and helps prevent disease transmission. Waterless alcohol-based hand gels may be used when soap is not available and hands are not visibly soiled.
* Influenza viruses are destroyed by heat; therefore, as a precaution,
all foods from poultry, including eggs and poultry blood, should be thoroughly cooked.
* If you become sick with symptoms such as a fever accompanied by a cough, sore throat, or difficulty breathing or if you develop any illness that requires prompt medical attention, a U.S. consular officer can assist you in locating medical services and informing your family or friends. Inform your health-care provider of any possible exposures to avian influenza. See Seeking Health Care Abroad in Health Information for International Travel for more information about what to do if you become ill while abroad. You should defer further travel until you are free of symptoms, unless traveling locally for medical care.
Note: Some countries have instituted health monitoring techniques, such as temperature screenings, at ports of entry of travelers arriving from areas affected by avian influenza. Please consult the Embassy of your travel destination country if you have any questions.
After your return
* Monitor your health for 10 days.
* If you become ill with a fever plus a cough, sore throat, or trouble breathing during this 10-day period, consult a health-care provider. Before you visit a health-care setting, tell the provider the following: 1) your symptoms, 2) where you traveled, and 3) if you have had direct contact with poultry or close contact with a severely ill person. This way, he or she can be aware that you have traveled to an area reporting avian influenza.
* Do not travel while ill, unless you are seeking medical care. Limiting contact with others as much as possible can help prevent the spread of an infectious illness.
For more information about H5N1 infections in humans, visit the World Health Organization avian influenza website at
http://www.who.int/csr/disease/avian_influenza/en/ and the CDC Avian Influenza site,
http://www.cdc.gov/flu/avian/index.htm. [/color]
The gist of this seems to be close netting and roofing of runs to stop wild birds getting to your chooks. I don't know if small bird such as robins can catch H5N1 but if they can I think I might have to cull rather than take the risk, and wait for an avian vaccine. Doesn't seem to be any evidence of people catching from water butts - there always seems to be close contact with poultry.