Two workers die within three days after coronavirus outbreak at Grimsby seafood factory Hilton Seafood have confirmed that two members of staff have died after testing positive for Covid-19 06:00, 3 MAR 2021 Two members of staff at Hilton Seafood have sadly died after testing positive for Covid-19 (Image: GrimsbyLive/Donna Clifford) Two workers at a Grimsby seafood factory have died in the last three days following a coronavirus outbreak at the site. Hilton Seafood has confirmed that two staff members have died after testing positive for Covid-19. According to the company, the staff members were being treated at Diana, Princess of Wales Hospital before sadly passing away in the three days up to March 2.