The best replacement for influenza is cold.

The best alternatives to influenza are rated as following:
★★★★★  cold
★★★★  flu
★★★  pneumonia
★★  stomach flu
★★  common cold
★★  bronchitis
★  swine flu
★  h1n1
★  sinus infection
  mononucleosis
  parainfluenza
  influenza
  strep throat
  bird flu
  meningitis
  rhinovirus
  stomach virus
  sars
  gripe
  gastroenteritis
  upper respiratory infection
  flu virus
  dengue
  ili
  resfriado comun
  kennel cough
  gripa
  h1n1 symptoms
  colds

Your alternative for influenza is not listed? Suggest!
Speaking about influenza, one probably shouldn't forget about vomiting and diarrhea.

Other search terms related to influenza and their ratings are:
★★★★★ vomiting and diarrhea
You have in mind a companion for influenza and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of influenza in all years. Click on graph for more.
influenza
cold
flu