{
  "id": 15924985,
  "title": "Scientists discover migration-mediated mechanism enabling bacteria-virus coexistence",
  "url": "https://urgent.news/2026/10/21/scientists-discover-migration-mediated-mechanism-enabling-bacteria",
  "topic": "science",
  "section": "Science",
  "published": "2026-10-21T18:00:52.000Z",
  "source": {
    "name": "Phys.org",
    "slug": "phys-org",
    "url": "https://phys.org/news/2026-10-scientists-migration-mechanism-enabling-bacteria.html"
  },
  "original_language": "en",
  "account": "Scientists from the University of Maryland and the University of Exeter have discovered a novel mechanism that allows bacteria and viruses to coexist without resorting to evolutionary arms races. Bacteria, in search of nutrients, move collectively, creating a \"chemotactic wave\" that helps them stay ahead of viruses. However, this collective movement also creates a vulnerability: viruses can infect a portion of the bacteria near the front edge of the wave, while the majority remain protected. This results in a coexistence of parasites and hosts that is maintained without co-adaptation. The researchers used large agar plates to simulate the conditions and observed how viruses formed a \"lytic highway\" moving at the speed of bacterial migration but always lagging behind the leading edge. Mathematical modeling confirmed that the balance between viral killing and bacterial chemotaxis sustains this stable coexistence. Understanding this mechanism could lead to new treatments for stubborn bacterial infections.",
  "summary": "Bacteria and the viruses that infect them—known as phages—coexist in soils, oceans and living organisms. Scientists have long thought this coexistence reflects a microscopic version of an evolutionary arms race: As parasites and hosts continually adapt to one another, both evolve ways to survive. But a joint study by researchers at the University of Maryland and the University of Exeter shows…",
  "key_points": [
    "Bacteria move collectively, forming chemotactic wave to evade viruses.",
    "Viruses infect bacteria near wave front, leaving majority protected.",
    "Coexistence maintained without co-adaptation, confirmed by modeling."
  ],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}