Bacterial food poisoning can lead to various long-term diseases. Look up Reactive Arthritis, and Guillian-Barre syndrome.

I speak from experience. Reactive Arthritis is not fun, and one can be genetically predisposed to it.

But, it is true that Salmonella in eggs is pretty rare. And given the string of recent outbreaks, you're perhaps more likely to get it from something else.

I guess about one person in every county in the US every year to be fairly rare. Pasteurized eggs sound like they would be more expensive. I suspect my friend was buying massive chicken-house raised eggs laid by birds with red glasses taped to their heads and hacked off beaks, pumped up with antibiotics and living in their own filth.