What antibiotic is most effective on E. coli?

Fosfomycin, colistin are some of the examples of most effective antibiotics on E.coli.You can read about Antimicrobial Resistance (AMR) – Definition, Causes, Antibiotic Resistance in India in the given link.

Further readings:

1. World Health Organisation (WHO) – Origin, Functions, Roles
2. Topic-Wise GS 3 Questions for UPSC Mains