Case Study: Mosquito Eradication Program (Part 9)

Look carefully at all three graphs and focus on the year 1988.

What can you deduce?

Three stacked graphs titled Percent of houses covered, Percent of houses infested, and Cases of dengue, double as the y-axes. The x-axis of all 3 graphs is labeled Year and ranges from 1986 to 1989 with 1988 highlighted. The data show over 75% of houses are covered, less than 1% of houses infested, and very few cases of dengue in 1988.
Percentage of houses covered by mosquito interventions vs. percentage of houses infested with mosquitoes vs. cases of dengue in Fortaleza in 1988