Havrix is a hepatitis A vaccine. Hepatitis is a serious disease caused by a virus. Hepatitis causes inflammation of the liver, vomiting, and jaundice (yellowing of the skin or eyes). Hepatitis can lead to liver cancer, cirrhosis, or death.
The oldest plant ever to be regenerated has been grown from 32,000-year-old seedsâbeating the previous recordholder by some 30,000 years. (Related: 'Methuselah' Tree Grew From 2,000-Year-Old Seed.) 1  Imagining the Banana of the Future.  The Curious Case of the Bumblebee, the Virus and the Tomato.
If the seeds were stored in a basement or root cellar, some of the seeds could be viable for twenty years. If they were left in a shed, most would be dead in a few months. How they were kept is the most important factor. You could freeze them indefinitely.