"in contrast, a mechanical mod is unregulated and works simply by drawing the power of a battery to an atomizer," he said. http://lm360.us/Steidley-grandpa-of-Sanislo-from-Perafita?Mcgaffeyd=139 and prevention says hepatitis a is a vaccine-preventable, communicable disease of the liver caused by a virus. it is usually transmitted person-to-person or by consuming .