Meat was undercooked twice... since ive eaten there, they need to becareful with that because someone is going to get sick.

Call the general manager and tell them asap. RE: Anytime or anywhere you are served under cooked meat of any kind it should be reported to the health department. Say you get sick 24 hours later and you didnt report the incident it would do you no good after the fact due to the lapsed time. DOCUMENTATION is the only way to proove anything, if its not put aside due to lack of insufficient facts. To the defending party they would say one thing about it. Proof we need proof...not 24 hours after the fact, or one minute. You act on this type of situation immediately so its legit.

I would've taken both undercooked burgers back into McDonald's and asked them for new burgers

I agree. Should be a review instead. And have you mentioned it to them at McDonald's at all? You might save someone's life even by doing so. Thanks

You should post this as a review so more people knlw... Its posted as a question so i believe local guides see it. Thamk you for the info.