Not certain, but all 3 of us had this. A few hours later spouse starts feeling nauseous, followed by my 7 year old then myself. 2 hours later my son starts vomiting a lot. We still only feel queasy. Our son has woken up every hour give or take and vomited. Gave him Nauzene and sips of water. No fever, no diarrhea he just can’t really keep anything down. 2 adults 1 child. Just a few hours after eating. We all had burgers, child was the only one to eat bacon.