Some chefs have switched to using pasteurized eggs to make Hollandaise, so that lessens the likelihood of someone getting sick, but not all. Mussels are fine if they are fresh and stored appropriately. If you eat at a high-end place and know they keep an immaculate kitchen, there’s little danger. However: “CDC estimates that about 80,000 people get vibriosis—and 100 people die” from eating mussels. You’re one of the lucky ones. Congratulations.