Yellow fever - Risk is present in rural areas. The tourist destinations of Cuzco and Machu Picchu are considered free of risk, although travel to and from those destinations may involve risk depending on the route. Diseases such as measles and diphtheria are commonly reported. Influenza risk extends throughout the year. Cajamarca, La Libertad, Lambayeque, Piura.
Chloroquine resistance is confirmed in the departments bordering Brazil and Ecuador.
Persons facing exposure in other risk areas should undertake chemoprophylaxis with chloroquine in addition to personal protective measures.