181dbf4c_of_Health__Victoria__Australia__Research_findings
[Egg facts] When egg shells are dirty, bacteria can contaminate eggs. Washing eggs can make it easier for bacteria to penetrate the porous shell. Dirty eggs should be thrown away. [Research findings] 
39% of respondents would use a dirty egg, while a further 51% would wash it and use it.
Research: Eggs need TLC - Department of Health, Victoria, Australia
Research findings