The best replacement for yellow fever is malaria.

The best alternatives to yellow fever are rated as following:
★★★★★  malaria
★  dengue
★  dengue fever
★  typhoid fever
★  typhoid
★  scarlet fever
  jungle fever

Your alternative for yellow fever is not listed? Suggest!
Speaking about yellow fever, one probably shouldn't forget about live vaccines.

Other search terms related to yellow fever and their ratings are:
★★★★★ live vaccines
You have in mind a companion for yellow fever and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of yellow fever in all years. Click on graph for more.
yellow fever
malaria
dengue