Coliforms???

[Chris Venema]

With todays rate of increase in name changing of bugs and classifications 
I'm wondering if anyone can give me a current definition of a coliform? 
Besides being oxidase negative, non spore forming, lactose fermentive 
gram negative bacteria. 

Also are any of the following classed as coliforms Serratia, Hafnia, 
Kluyvera, Leclercia, and Adecarboxylata. I have heard that some Hafnia 
are classed as coliforms and some are not???

As a bonus question does anyone know what the differences between E.coli 
and E.coli inactive are besides one being lazier than the other.

Thanks in advance for any info.