New hazards associated with certain diseases or species may develop in particular due to changes in trade patterns, the environment, the climate, animal husbandry and farming traditions, but also as a result of social changes.
Féadfaidh guaiseanna nua a bhaineann le galair nó speicis áirithe forbairt go háirithe i ngeall ar athruithe i bpatrúin thrádála, ar an gcomhshaol, an aeráid, feirmeoireacht ainmhithe, traidisiúin feirmeoireachta ach mar thoradh ar bharr athruithe sóisialta chomh maith.