Recommended for all unvaccinated people traveling to or working in countries with an intermediate or high level of hepatitis A virus infection where exposure might occur through food or water. Cases of travel-related hepatitis A can also occur in travelers to developing countries with "standard" tourist itineraries, accommodations, and food consumption behaviors.
Recommended for all unvaccinated persons traveling to or working in countries with intermediate to high levels of endemic HBV transmission, especially those who might be exposed to blood or body fluids, have sexual contact with the local population, or be exposed through medical treatment (e.g., for an accident).
Recommended for travelers spending a lot of time outdoors, especially in rural areas, involved in activities such as bicycling, camping, or hiking. Also recommended for travelers with significant occupational risks (such as veterinarians), for long-term travelers and expatriates living in areas with a significant risk of exposure, and for travelers involved in any activities that might bring them into direct contact with bats, carnivores, and other mammals. Children are considered at higher risk because they tend to play with animals, may receive more severe bites, or may not report bites.
Yellow Fever Vaccine Requirement: Brazil does not require travelers entering Brazil to present proof of yellow fever vaccination. CDC yellow fever vaccination recommendation for travelers to Brazil: For all travelers ≥9 months of age going to the following areas at risk for yellow fever transmission, including the ENTIRE states of Acre, Amapá, Amazonas, Distrito Federal (including the capital city of Brasília), Goiás, Maranhão, Mato Grosso, Mato Grosso do Sul, Minas Gerais, Pará, Rondônia, Roraima, and Tocantins; only designated areas of the following states: Bahia, Paraná, Piauí, Rio Grande do Sul, Santa Catarina, and São Paulo. Vaccination is recommended for travelers visiting Iguassu Falls. Vaccination is NOT recommended for travel to the following coastal cities: Rio de Janeiro, São Paulo, Salvador, Recife, and Fortaleza. (Updated March 10, 2010) Vaccination should be given 10 days before travel and at 10 year intervals if there is on-going risk.
Recommended for all unvaccinated people traveling to or working in Brazil, especially if staying with friends or relatives or visiting smaller cities, villages, or rural areas where exposure might occur through food or water.