There is antibiotic residue in the eggs. The next time you get an infection, an antibiotic may not work because bacteria have built up immunity due to previous small doses of the duramycin. I'm sure you've heard about situations like this in the media.
The use of antibiotics effects the immune systems in humans. The more ones intake, the more likely your own body's immune system will be surpressed. Ingesting unknown amounts of antibiotics through such methods as tainted eggs, could cause adverse effects on your health.