How much of E. coli is imported?
Core genome versus mobile accessory genome is a live accounting problem.
Metagenomics sees resistance genes without always knowing which cell holds them. Linking gene to host is still hard.
Researchers ask how often HGT invents new metabolism in the wild versus merely moving known cassettes.
Open questions
Can we block conjugation safely?
Anti-plasmid ideas exist in research. They are not household chemicals.
Do biofilms speed HGT?
Close contact can help. Quantifying that in people is unfinished.
How should airports watch plasmids?
Genomic surveillance of imported infections is a policy and privacy debate.
Is there HGT we should celebrate?
Nitrogen-fixation genes and other metabolic gifts shaped ecosystems long before clinics.
The frontier is surveillance of luggage, not better amateur transfer.
Keep exploring
More in Change & defence
Mutation and variants
Populations of genomes, not cartoon villains — RNA viruses copy sloppily, and public-health names track clusters that spread.
Familiarity 92Antibiotic resistance
A shared drug budget under selection in hospitals, farms and wastewater — stewardship, not a lab manual.
Familiarity 85Vaccines and immunity
Antibodies, memory cells and community arithmetic — conceptual, not a prescription and not an anti-vaccine tract.
Familiarity 94Biofilms
Surface cities of microbes — plaque and catheters explain persistence, without a grow-your-own kit.
Familiarity 38Hygiene and balance
Clean water saves lives; missing old microbial partners is a separate, still-debated immune story.
Familiarity 70