title: Evidence that microorganisms cause inactivation of viruses in activated sludge.
abstract: Virus loss in activated sludge appeared to be caused by microorganisms. This conclusion is supported by the finding that poliovirus infectivity decreased during incubation in mixed-liquor suspended solids, primarily because of a sedimentable, heat-sensitive component. Furthermore, broth spiked with mixed-liquor suspended solids acquired antiviral activity during incubation.
mesh_terms: D018407:Bacterial Physiological Phenomena; D004463:Ecology; D006358:Hot Temperature; D017955:Poliovirus / Q000254:growth & development*; D012722:Sewage
chemical_list: D012722:Sewage