Back in the 1st world, every salad roll is an invitation to Enterobius vermicularis.    From Wordnik.com.  [The (Lesser) Rules of Civilization | Heretical Ideas Magazine] Reference

Enterobius vermicularis or Pinworm eggs roundworm and infection is very common in children as well as adults worldwide.    From Wordnik.com.  [CreationWiki - Recent changes [en]] Reference

(Enterobius) - (40 mg./kg./day).    From Wordnik.com.  [Chapter 31] Reference

Cleanliness - and Problems that Come from Lack of CleanlinessBasic Guidelines of CleanlinessPublic Cleanliness (Sanitation) Worms and Other Intestinal ParasitesRoundworm (Ascaris) Pinworm, Threadworm, Seatworm (Enterobius) Whipworm (Trichuris, Trichocephalus) HookwormTapewormTrichinosisAmebasGiardiaBlood Flukes (Schistosomiasis, Bilharzia) Vaccinations (Immunizations) - Simple, Sure ProtectionOther Ways to Prevent Sickness and InjuryHabits That Affect Health.    From Wordnik.com.  [Chapter 19] Reference

Enterobius Mug.    From Wordnik.com.  [To file under “Pretty and educational but… ultimately depressing”] Reference

(threadworm, Enterobius).    From Wordnik.com.  [Chapter 31] Reference

Pinworm, Threadworm, Seatworm (Enterobius).    From Wordnik.com.  [Chapter 19] Reference