Vaping-linked lung injuries that have killed 29 and sickened more than 1,000 people in the United States are likely to be rare in Britain and other countries where the suspect products are not widely used, specialists said Monday.

Experts in toxicology and addiction said they are sure that the 1,299 confirmed and probable American cases of serious lung injuries linked to vaping are "a U.S.-specific phenomenon," and there is no evidence of a similar pattern of illness in Britain or elsewhere.

"What's happening in the U.S. is not happening here (in Britain), nor is it happening in any other countries where vaping is common," said John Britton, a professor and respiratory medicine consultant and director of the U.K. Center for Tobacco & Alcohol Studies at Nottingham University.