AIDS vs herpes simplex

AIDS

adj

  • Extremely annoying or frustrating. 

noun

  • Acquired immune deficiency syndrome. 

herpes simplex

noun

  • A viral disease caused by Human herpesvirus 1 or Human herpesvirus 2 in genus Simplexvirus. 

How often have the words AIDS and herpes simplex occurred in a corpus of books? (source: Google Ngram Viewer )