The U.S., Australia and U.K. have issued warnings for travelers in Vang Vieng after several tourists died in a suspected methanol poisoning outbreak.

At least six tourists who traveled to Laos have died in recent days, prompting international alarm about the dangers of consuming alcoholic drinks that contain methanol.

Simone White, 28, from Orpington, Kent, was one of a number of people taken to hospital after the incident in the popular backpacking town of Vang Vieng last week