references

• see wikipedia re "handwashing", many other searchable references.
• Provident Living: basic physical health with limited resources (incl good info on laundry, food, hygiene, cleanliness, water, storage, 1st aid, ETC)
• A lifetime of reading news like re penalized restaurants, and serious, life-altering health problems in places w/o good health practices.
• NHS article about handwashing, risks: How long do bacteria and viruses live outside the body?
• The Church has had hygiene programs teaching handwashing, diseases are spread; many years of science!
• On not touching face and other cautions for covid-19 (the illness caused by the new coronavirus in early 2020 news), flus, etc.
• "Keeping Physically Healthy" (chapter in ~2003? Church priesthood manual)
  

  "???To prevent sickness, we should bathe, brush our teeth, and wash our hands
  regularly. We should also regularly wash our clothes, bedding, and dishes.
  
  Sickness and disease can be prevented by eliminating germs. We can eliminate
  germs by keeping insects and animals out of the home and by disposing of
  animal and human waste. For the same reason, food should be stored in a clean,
  safe place.
  "