The best replacement for virus is bacteria.

The best alternatives to virus are rated as following:
★★★★★  bacteria
★★★  worm
★★★  flu
★★  infection
★★  cold
★★  food poisoning
★★  malware
★  bacterial infection
★  bacterial
★  trojan
★  disease
★  virion
★  bacteria symptoms
★  cell
★  spyware
  strep throat
  sinus infection
  strep
  bacteria fever
  retrovirus
  hoax
  virus
  morning sickness
  bacteria size
  appendicitis
  bacterial cold
  bacteria biology
  parasite
  venus
  allergies
  living cell
  bacteria how to tell
  organism
  flu symptoms
  bacterium
  hpv
  worms
  ibs
  living organisms
  antibiotics
  internet security
  bad virus
  bateria
  allergy
  spam
  germ

Your alternative for virus is not listed? Suggest!
Speaking about virus, one probably shouldn't forget about hives.

Other search terms related to virus and their ratings are:
★★★★★ hives
★★★ capsid
★★★ vaccine
★★ rash on face
★ joint pain
★ opening email
★ skin rash
rash and fever
You have in mind a companion for virus and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of virus in all years. Click on graph for more.
virus
bacteria
worm