Here are five layers of data that could be added to ArcGIS Online to study the dengue fever outbreak in Brazil and predict where outbreaks may occur:
1. Population density - Areas with higher population density are likely to see more cases since the virus spreads between humans.
2. Precipitation levels - Higher rainfall leads to more standing water where mosquitoes can breed.
3. Temperature - The mosquitoes that transmit dengue fever thrive in warmer conditions.
4. Socioeconomic data - Areas with poorer infrastructure and sanitation may see higher rates as mosquitoes find more breeding habitats.
5. Land use - Urban/peri-urban areas with more development and less green space could experience higher transmission