Demystifying Medicine Video

This video looks into the truth behind the myth of the 5-second rule — the belief that if you drop food on the floor, it is safe to eat it within 5 seconds after it is dropped and is considered contaminated after 5 seconds.

[Please complete our feedback form]

  • Brogan, R. (2018). What Are Germs? Retrieved 12 February 2018.
  • Dawson, P., Han, I., Cox, M., Black, C., & Simmons, L. (2007). Residence time and food contact time effects on transfer of Salmonella Typhimurium from tile, wood and carpet: testing the fiveā€second rule. Journal of Applied Microbiology, 102(4), 945-953.
  • Gorman, R., Bloomfield, S., Adley, C. C. (2002). A study of cross-contamination of food-borne pathogens in the domestic kitchen in the Republic of Ireland. International Journal of Food Microbiology, 76(1-2), 143-150.
  • Kusumaningrum, H. D., Riboldi, G., Hazeleger, W. C., & Beumer, R. R. (2003). Survival of foodborne pathogens on stainless steel surfaces and cross-contamination to foods. International Journal of Food Microbiology, 85(3), 227-236.
  • Mead, P. S. et al. (1999). Food related illness and death in the United States. Emerging Infectious Disesease, 5(5), 607-625.
  • Miranda, R. C., & Schaffner, D. W. (2016). Longer contact times increase cross-contamination of Enterobacter aerogenes from surfaces to food. Applied and Environmental Microbiology, 82(21), 6490-6496.