Here are some O104:H4 links. The E.coli O104:H4 Genome Analysis Crowdsourcing wiki is also a good source of the latest scientific information. Anyway, links:
TGAC helps in crowd-sourcing analysis of E. coli strain
Possible T6SS in EAEC 55989 is absent from TY2482 genome?
STEC/EHEC outbreak - horizontally transferred genes
Phage analysis of German E. coli outbreak genome
E. coli: What we know and need to
E. Coli: Don't Blame the Sprouts!
Typing of German E. coli
More Stomach-Churning Facts about the E. Coli Outbreak
Are Bean Sprouts the End of Organic Farming? Nah.
New German STEC/EHEC data from BGI
Phage on the rampage: Antibiotic use may have driven the development of Europe's deadly E. coli.
Scientists Rush to Study Genome of Lethal E. coli
MLST of IncI blaCTX-M plasmid in German outbreak strain
German E. coli - phage analysis by Nico Petty
PFAM classification comparison
This interview might interest you: