Children, even those that are vaccinated, may develop rotavirus disease more than once. That is because neither natural infection with rotavirus nor rotavirus vaccination provides full immunity (protection) from future infections. Usually a personâs first infection with rotavirus causes the most severe symptoms.
Because molecules move quicker at higher temperature, causing them to collides more. Since they collides more, reaction occurs to be a lot faster to. And that's why things dissolve quicker in hot water than in room temperature water.
It may also have its origins in the fact that cold water generally gains heat more rapidly than water that is already hot, though it will not boil faster. But under the right circumstances, the reverse phenomenon can occur, and hot water can freeze more quickly than cool water.