"I have not been vaccinated until it is too late," said an Englishman who died after being bite by a rabid cat in Morocco overseas.
Public Health UK (PHE) warned travelers after the British bites the rabies cat and then gets sick.
Details of the case were not disclosed by the public officials.
However, it is understood that he had been bitten a few weeks ago and had not received immediate and potentially life-saving treatment.
Rapid treatment, including wound healing and rabies vaccination, is very effective and can save lives of infected people.
Britain tried to take care of Morocco anytime after bite at home.
Professor Jimmy Whitworth of the London School of Hygiene and Tropical Medicine said: "I am in contact with a cat that behaves abnormally and is being cared for. I am Morocco and the UK, but unfortunately I was not vaccinated until it was too late.
"I think the cat asked this guy a few weeks ago."
He added: "The usual time interval between symptoms (until symptoms appear) is two to three months, so you should spend enough time.
"But it can be as short as a week, so it's important to find an immediate treatment and get vaccinated.
"In this tragic case, a person was not vaccinated on time.
"It is difficult to tell from the information provided. The delay could be in Morocco, and the delay could have been in the UK, so one of the messages is that the health practitioner must be out of the possibility of rabies.
"There is a high stake, you should not misunderstand."
The PHE said it was "not dangerous" for the wider public, but suggested a vaccination if needed as a preventive measure in close contact with the health care provider.
Rabies is not prevalent in the wild in England or in livestock, but between 2000 and 2017, five Britons were infected with rabies after "foreign animal exposure," PHE added.
The last recorded rabies incident in England was in 2012, and a British resident was bitten by a South Asian dog.
Dr. Mary Ramsay, director of immunization at the PHE, said: "This is an important reminder that people should be reminded of what to do when traveling to a rabies country.
"If you are bitten by an animal, or if you are injured or licked, wash your wound or exposed area with a lot of soap and water and consult a doctor immediately.
"There is no risk to the public in this case, but we are vaccinating if we feel we need close contact with health workers as a precautionary measure."
Rabies are transmitted through infected animals through injuries such as water or scratching.
It does not spread from human to human.
No infection is found in British animals except a few wild bats.
There have been no reports of rabies adoptions in animals other than bats in the UK since 1902.
In 2002, however, an example of a human rabies bat in Scotland was reported in a bat handler.
People traveling in areas where rabies is common, such as Asia or Africa, are encouraged to consider vaccination. Especially if you are planning to stay for longer than a month or planning activities at risk, you will contact animals with rabies.
The PHE said rabies travelers should avoid contact with dogs, cats and other animals as much as possible, and seek advice on the need for rabies vaccinations before traveling.
More country-specific information on rabies is available from the National Travel Health Network and the Center's Web site.