The best replacement for stomach bug is flu.

The best alternatives to stomach bug are rated as following:
★★★★★  flu
★★★★  food poisoning
★  appendicitis
★  ibs
★  norovirus
★  something i ate
★  morning sickness
★  hangover
★  indigestion
★  pregnant
★  food poison
  food poisoning symptoms
  pregnancy nausea
  bad food

Your alternative for stomach bug is not listed? Suggest!
Speaking about stomach bug, one probably shouldn't forget about no vomiting.

Other search terms related to stomach bug and their ratings are:
★★★★★ no vomiting
You have in mind a companion for stomach bug and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of stomach bug in all years. Click on graph for more.
stomach bug
flu
food poisoning