Infectious disease and Rickettsiosis

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

Rickettsiosis and infectious disease are semantically related. In some cases you can replace term "Rickettsiosis" with "Infectious disease", this terms are similar.

Rickettsiosis noun - Infectious disease caused by ticks or mites or body lice infected with rickettsial bacteria.

Infectious disease and rickettsiosis are semantically related. You can use "Infectious disease" instead a noun "Rickettsiosis".