Viral load, also known as viral burden, is a numerical expression of the quantity of virus in a given volume of fluid, including biological and environmental specimens. It is not to be confused with Viral titre or Viral titer which depends on the assay. When an assay for measuring the infective virus particle is done (Plaque assay, Focus assay) Viral titre often refers to the concentraion of infectious viral particle which is different from the total viral particle . Sputum and blood plasma being two bodily fluids . For an example of environmental specimens ; the viral load of norovirus can be determined from run-off water on garden produce. Norovirus has not only prolonged viral shedding and has the ability to survive in the environment but a minuscule infectious dose is required to produce infection in humans: less than 100 viral particles.
Viral load, also known as viral burden, is a numerical expression of the quantity of virus in a given volume of fluid, including biological and environmental specimens. It is not to be confused with viral titre or viral titer, which depends on the assay. When an assay for measuring the infective virus particle is done (Plaque assay, Focus assay) , viral titre often refers to the concentration of infectious viral particles, which is different from the total viral particles . Sputum and blood plasma are two bodily fluids from which viral load is measured. As an example of environmental specimens , the viral load of norovirus can be determined from run-off water on garden produce. Norovirus has not only prolonged viral shedding and has the ability to survive in the environment but a minuscule infectious dose is required to produce infection in humans: less than 100 viral particles.
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