Once poliomyelitis is eradicated, infectious poliovirus materials retained in laboratories, vaccine production sites, and other facilities will pose a risk for poliovirus reintroduction into communities.
You can't just look at infection numbers and declare victory. You also need to ensure the virus exists only in dedicated labs with obsessively strict safety protocols and purge it from every other scientific and medical facility that might, maybe, harbor particles of the deadly infection. Such labs are numerous.
Incidents causing potential exposures to pathogens occur frequently in the high security laboratories. Lab incidents that lead to undetected or unreported laboratory-acquired infections can lead to the release of a disease into the community outside the lab.
The Canadian Border Services Agency (CBSA) intercepted Gang Li’s flight and found he was transporting seven undeclared test tubes of an unknown substance in his checked baggage. Laboratory testing confirmed the items included the following viruses: Peste des Petits Ruminants, Newcastle disease, Duck Adenovirus 1, and Parainfluenza Virus 5.
Global terrorism is a rapidly growing threat to world security, and increases the risk of bioterrorism.
Preventing a potential attack isn’t as simple as monitoring a list of outlawed pathogens as it’s possible to order smaller components of a longer genetic sequence and then reassemble them in a lab to build a harmful biological agent.
The US Army has reprimanded a Brigadier General after finding fault with his command of its laboratories at Dugway Proving Ground.