They occasionally get hepatitis or something and die.

https://en.wikipedia.org/wiki/Chi-Chi%27s

Oddly, the restaurants are gone, but there is salsa using the brand in some supermarkets still. I wouldn't buy it, even though it presumably is just someone else using the logo.

They still exist in my country! (Belgium)

That's widely understood, but I hope nobody is boiling their salads in response to that statistic. Maybe tomorrow I'll trip on my shoelace and crack my skull open on the sidewalk, but I'm not going to wear a helmet just in case. There is an endless supply of extremely low probability ways to die, but if you spend your time worrying about all that crap you'll ironically hasten your own demise by stressing yourself out. Round those small possibilities down to zero and stop worrying about it.