What does sporadic?

Sporadic CJD represents at least 85% of all cases. Sporadic cases have no identifiable source of infection.

it is the occasional sale of a commodity at below cost or at a lower price abroad than domestically in order io unload an unforeseen and temporary surplus of the commodity without having to reduce...

sporadic infection mean the infection occur from time to time without maintaining in the population because its lack suitrable vector as Malaria in the UK

Nothing