I'm kind of surprised no one has posted about this yet. Is anyone else panicking about this like I am?

Yesterday I purchased a tuna sandwich at school and it had tomato slices on it. Later that evening I went to a barbecue and ate a bunch of tortilla chips dipped in a fresh homemade salsa. I haven't been able to stop worrying since. I've eaten today but my stomach has been in a strange state of hunger/nausea (haven't been able to distinguish between the two) all day.

Anyone know any details about it? How soon symptoms start to develop? Could I be at risk?

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