Why They Survive

Survival of the fittest

A variety of factors is responsible for the survival of viruses in water bodies. Some of the more significant ones are listed for you in Figure 1. The survival of enteric viruses under laboratory conditions and in estuaries varies from a few hours to up to 200 days. Survival in winter is superior to that at summer temperatures. It is not known exactly what happens to these multitudes of viruses introduced in water bodies. The inability of rhinoviruses to withstand pH changes, temperature fluctuations, and the lack of protective covering

Sea or estuary water River water Tap water Soil


Landfill leachates Sediments

2-130 days 2->188 days

5-168 days 25-175 days

6-90 days

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