This figure gives the names of the infectious diseases in different font sizes and contrasting colours: in the largest font, in yellow – HIV/AIDS, influenza, measles; in the second-largest font, in red – polio, diarrhoea, meningitis, hepatitis; in the third-largest font, in orange – common cold, Ebola, yellow fever; and in the smallest font, in brown – herpes, mumps, rubella, rabies.