Samples of pandemic flu virus found in 3 foreign warehouses of shipper

Some samples of a potentially deadly flu virus, sent by mistake to thousands of laboratories from October through March, were found last week in FedEx warehouses in Lebanon, Mexico and Chile...WHO alerted health authorities last week that samples of the H2N2 flu virus, the strain that caused the pandemic of 1957 that killed at least 1 million people, were included in kits used to test laboratories' proficiency in identifying unlabeled viruses. The kits were sent to about 5,000 labs in 19 countries.Many samples remain in circulation and exactly how this happened is still unclear.Serious questions and answers should result from this incident, considering the danger if such items were to fall into the wrong hands.