What documents do I need to travel outside the United States? In general, you will need to present a passport from your country of citizenship or your refugee travel document to travel to a foreign country. In addition, the foreign country may have additional entry/exit requirements (such as a visa).
However, avian influenza A viruses are very contagious among birds and some of these viruses can sicken and even kill certain domesticated bird species including chickens, ducks, and turkeys. Infected birds can shed avian influenza A viruses in their saliva, nasal secretions, and feces.
Subtypes of bird flu. There are different subtypes and strains of the virus that causes bird flu, and some cause more severe disease than others. The subtypes of the virus that have caused recent concern include: 1  influenza A (H5N1) virus (or simply H5N1 virus); and, more recently, 2  influenza A (H7N9) virus.uman infections with bird flu are not common, but it is possible for people to catch bird flu from infected poultry or surfaces contaminated with droppings, saliva or feathers from infected birds. Human cases of bird flu generally coincide with outbreaks in poultry.