The final missing samples of the deadly 1957 Asian flu have been located and all but one has been destroyed according to a spokesperson at the World Health Organization.

The final sample had been sent to a lab in Beirut and was finally located at the airport there. It is scheduled to be destroyed shortly. The other missing samples sent to Mexico and South Korea have already been found and destroyed.

The Asian flu virus, officially known as H2N2, killed between 1 million and 4 million people worldwide in 1957. Samples of the deadly virus were accidentally sent to labs throughout the world as part of a test of influenza vaccines. The WHO feared another epidemic outbreak of H2N2 if the samples were not handled properly.

Now, with only one sample remaining and soon to be destroyed, it seems as if the threat has passed. Thus far, nobody who has handled the Asian flu samples has taken sick as a result. By working together, the world health community was able to avert a potential disaster.