Also of concern now is the fact that over recent years, Vietnam has become a popular holiday destination for Westeners as it is so cheap to enjoy a stay there.

The food is good, the scenery beautiful and the people very friendly.

Unfortunately, that is just the perfect combination that appeals to Westerners for their holiday destinations and for all reports, it is now very rapidly "Westernizing" as a country, with a vibrant tourist industry.

But again, this would the most likely way that H5N1 will spread itself around the globe within just a few days, by flying inside all those thousands of tourists, who will unknowingly be carrying and spreading this killer.