A home warranty purchased by a home seller during the time the property is listed. The warranty becomes effective as soon as itâs paid for and covers the property during the listing and a home warranty placed on the home by a prospective home seller at any time during a listing.
1 Thimerosal contains ethyl mercury. 2  This is a different chemical compound than mercury found in the environment (methylmercury). 3  Thimerosal has been used as a preservative since the 1930s to prevent bacterial growth in vials containing multiple doses of vaccine and other medical products.he majority of influenza vaccines distributed in the United States contain thimerosal as a preservative. However, an increasing amount is thimerosal-free. While the multiple dose vials still have thimerosal to prevent bacterial growth, the single-dose preparations do not.
Vaccine Safety and Thimerosal. Thimerosal is a preservative that prevents bacteria from growing. Thimerosal has been widely used since the 1930s (over 75 years) in vaccines and other medications, to help prevent contamination with harmful bacteria and fungi.The Food & Drug Administration (FDA) considers the small amount of thimerosal in some vaccines to be acceptably safe.himerosal has been widely used since the 1930s (over 75 years) in vaccines and other medications, to help prevent contamination with harmful bacteria and fungi. The Food & Drug Administration (FDA) considers the small amount of thimerosal in some vaccines to be acceptably safe.