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Water Lecture 3 A. Disinfection B. Water Safety Plans - page 12 / 47

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Some Factors Influencing Disinfection      Efficacy and Inactivation - Viruses

Virus type, structure and composition:

Envelope (lipids): typically labile to disinfectants

Capsid structures and capsid proteins (change in conformation state)

Nucleic acids:  genomic DNA, RNA; # strands

Glycoproteins:  often on virus outer surface; typically labile to disinfectants

Physical state of the virus(es):

Aggregated

Particle-associated

Embedded within other materia (within membranes)

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