For citizens of several countries, no visa is required to enter Brazil. Other nationalities have to apply for a visa before arriving to Brazil. Please check here whether you will need a visa or not. The Conference Secretary will provide participants with a letter of invitation to NANO 2008 if necessary.

Brazilian authorities require proof of Yellow Fever vaccination from travelers that have traveled to one of the countries listed below during the past 90 days:

Africa: Angola, Benin, Burkina Faso, Burundi, Cameroon, Cape Verde, Central African Republic, Democratic Republic of Congo, Congo, Côte d’Ivoire, Ethiopia, Gabon, The Gambia, Ghana, Guinea, Guinea Bissau, Equatorial Guinea, Liberia, Mali, Mauritania, Niger, Nigeria, Kenya, Rwanda, São Tomé and Principe, Senegal, Sierra Leone, Somalia, Sudan, Tanzania, Togo, and Uganda.

South America: Bolivia, Colombia, Ecuador, Guyana, French Guiana, Peru, Surinam, and Venezuela.

Central America & Caribbean: Panama, and Trinidad and Tobago.