Climate change has raised average temperatures in the Central Highlands region of Kenya, allowing the disease to creep into higher altitude areas where the population has little or no immunity.

Such conditions prevail throughout much of northern South America and Cuba, but many Central American savannas, as well as coastal areas of Brazil and the island of Trinidad, do not fit this pattern.

Article 55 Tractors are prohibited to pass along expressways or roads in central areas of large and medium-sized cities.