South Korea's smallpox vaccine stockpile spoils

Approximately one million doses of smallpox vaccine out of South Korea’s stockpile of seven million have reportedly spoiled.

The doses, for use in case of a biological attack from North Korea, were recently found unfit for use and will have to be destroyed, according to

The spoiled doses were produced by South Korean domestic pharmaceutical companies in 2009 and have yet to reach their expiration date. Another 4.59 million doses purchased from 2003 and 2008 have reached their expiration date but are currently not being eliminated from the stockpile.

According to data from the Korea Food and Drug Administration that was recently released by Lee Jae-Sun, a lawmaker from the Liberty Forward Party, a series of animal tests conducted on the doses produced in 2009 failed.

All of the guinea pigs used in the toxicity tests died after being injected with doses from the batch, reports. The KFDA said the high toxicity of the batch has made the doses unfit for human use and they have asked the Korean Centers for Disease Control and Prevention to destroy them.

Seoul acquired 980,000 doses of antibiotics to treat bubonic plague in 2001. They were destroyed after passing their expiration date and have yet to be replaced, according to