Figure 3
From: The decline of malaria in Finland – the impact of the vector and social variables
Decadal trend of equilibrium points of malaria localities in 1750 – 1959. The linear trend line from the end points in 1750's and 1950's are indicated with yellow rings. The length of the black vector is only 4,9 km. The decreasing size of red dots symbolizes decreasing malaria frequency.