Infectious disease and Yellow fever

Infectious disease noun - A disease transmitted only by a specific kind of contact.

Yellow fever and infectious disease are semantically related. In some cases you can replace phrase "Yellow fever" with "Infectious disease", this phrases are similar.

Yellow fever noun - Caused by a flavivirus transmitted by a mosquito.

Infectious disease and yellow fever are semantically related. You can use "Infectious disease" instead a noun phrase "Yellow fever".