Commensal majority
Most strains stay in the colon and do not invade.
Escherichia coli — Usually a gut resident; a minority of STEC pathotypes drive foodborne headlines.
Darker cells mean a higher score for this topic on that metric.
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Last reviewed Sources & creditsMedia creditsMethodology
Read Identity → How they live → Body & health, then use compare rails.
Public-health education — not a care plan, prescription, or outbreak briefing.
It names everyday desks for Encounters before English norms look universal.
No — editorial 0–100 browsing aids inside this atlas only.
Use related cards and best-of / quiz rails after the first three chapters.
How they live and Body & health carry mechanisms; skim Identity first.
Identity is a Gram-negative rod of the gut, used as a water marker, and split into commensal versus pathogenic types.
Calling every E. coli a germ erases the neighbor that already lives in most people.

Most strains stay in the colon and do not invade.
STEC, ETEC, EPEC and others are defined by toxin or adhesion toolkits.
Lipopolysaccharide and flagellar antigens give outbreak filing names such as O157:H7.
Finding E. coli in treated water is a process-failure signal.
K-12 lost many wild traits over decades. That history is not a home protocol.
Some virulence and resistance genes ride mobile DNA between strains.
Outbreak names like O157 are serotype labels, not moral ranks.
A winter respiratory virus of drift and rare shift — surveillance and vaccines, not a cartoon villain.
Familiarity 93An airborne bacillus of latency and long care — programmes and air, not a drug recipe.
Familiarity 70A common skin neighbor and a resistance story called MRSA — not scare porn.
Familiarity 78A very-low-dose gut virus of schools and ships — soap and bleach surfaces, not alcohol-gel faith.
Familiarity 80A gastric spiral that rewrote the ulcer textbook — Nobel 2005, Korea's high historic prevalence, no recipes.
Familiarity 68