Dental plaque
Sugar and time shift a mixed film toward cavities and gum inflammation.
Mouth and skin already run films. Trouble starts when architecture meets sugar, a broken barrier or a plastic tube.
Device-related bloodstream infections are a hospital quality metric because films love lumens.
Body interfaces
Urinary catheter
A tube gives a highway from the outside world into the bladder.
Joint implant
A film on hardware can cause pain and loosening months after surgery.
Cystic fibrosis lungs
Thick mucus can host persistent communities; care is specialized and clinical.
Contact lenses
Poor case hygiene can let films ride onto the cornea.
Industrial pipes
Fouling and corrosion cost money; the same ecology appears in showers.
Whether to remove hardware belongs to clinicians, not this page.
Keep exploring
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Familiarity 85Vaccines and immunity
Antibodies, memory cells and community arithmetic — conceptual, not a prescription and not an anti-vaccine tract.
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Clean water saves lives; missing old microbial partners is a separate, still-debated immune story.
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Sideways DNA traffic — conjugation, transduction, transformation as names and history, not protocols.
Familiarity 45