pre-cooked corned beef Precooked cornbeef purchased on 3/10/20. Refrigerated, unopened. Opened and heated on stove top 3/18. Put in refridge. 3/19 eaten by person A at 4pm. No problem. Eaten from refridge by person B at 9 pm. Person B had severe vicious projectile vomiting at 7am-11am. 4 others in home had eaten corned beef earlier then person A and B but had no problems.