Kebab shop worker Omar Zouhri, from Aylesbury, Buckinghamshire, is thought to have not received a vaccine "until it was too late".
Now, his heartbroken widow Chadia, 51, told The Sun: “You have no idea how tragic this is. It will all come out at the inquest.”
Mr Zouhri, who is believed to be a dual British-Moroccan national, was nipped by the rabid cat while holidaying abroad two weeks ago.
The 58-year-old was reportedly visiting relatives in the town of Mehdya.
He died on November 4 in the UK. Public Health England (PHE) has now issued a warning to travellers.