There are four (4) Classes of Dangerous Goods which are relevant to a certified shipper of infectious substances:
There are two substance categories which fall under Division 6.2. Infectious Substances
NOTE: Assignment to UN 2814 or UN 2900 shall be based on the known medical history and symptoms of the source human or animal, endemic local conditions, or professional judgement concerning individual circumstances of the source: human or animal.
Shippers of infectious substances shall ensure that packages are prepared utilizing the Triple Packaging System. This packaging system is used for the transportation of all infectious substances in such a manner that they reach their destination in good condition and present no hazard to persons or animals during transport.
As the name suggests, there are three layers of containment to protect the substances being shipped –