Avian influenza spreads further throughout the world. The virus has been detected in many countries, both within and outside Europe. Caution must therefore be exercised in the areas in question, while the following recommendations remain applicable. 

Prevention
The avian influenza vaccine being administered to chikens is not suitable for human use. 

We advise against carrying antiviral drugs as Oseltamivir (Tamiflu) when visiting countries where cases of avian influenza have been reported. It is not necessary at the moment. There is no risk, provided one avoids direct contact with infected birds. 
If Tamiflu were available on board, there is a chance that seafarers who suffer from a common cold while sailing in waters where avian flu has been identified might take the drug as a precaution. This could be risky, as more widely the drug is used, the greater the chance that viruses will become resistant. This could mean that Tamiflu would no longer be effective when it is really needed, as has occurred with several antibiotics.   
 
Advice for those visiting countries affected by Avian influenza

• Avoid direct contact with birds and poultry. Do not visit markets where birds are sold or events at 
  which birds are present.
• Bear in mind that manure can also be a source of infection. Take care when cleaning up bird 
  droppings on deck.
• Do not handle dead birds.
• In the Netherlands, report suspicious bird deaths to the General Inspectorate (AID), T +31 (0)45  546 62 30. Every single dead swan or heron is suspect. Dead geese and ducks are suspect in numbers from five upwards, while deaths in excess of twenty among other species should also be reported.
• Pursuant to European regulations, eggs and meat originating from areas where avian flu has been identified among poultry flocks should neither be sold commercially nor processed in foodstuffs. If you are sailing in waters beyond the European Union or have purchased such products during a period in which the source of infection among birds was not yet clear, then you should wash your hands regularly and thoroughly when handling chicken or other poultry meat, as well as ensuring that the meat is thoroughly cooked and heated (at least 70 °C). Do not prepare dishes containing raw eggs. Even in the event that chicken or eggs prove to be infected, the virus cannot survive thorough heating. When visiting restaurants, it is essential that one avoid consuming bird meat that is not thoroughly cooked.
• Do not bring any animal products, such as eggs, meat, cheese, milk, skins or hunting trophies, back from countries affected by avian influenza, not even in small quantities.