In 2005, S.M.D. was renamed Aleo Solar AG. The company went public in July 2006 and is listed on the Frankfurt Stock Exchange (ISIN: DE000A0JM634). Bosch secured a majority stake in the company in 2009.
The viruses are more likely to cause warts when they come in contact with skin that is damaged or cut. Getting a small scrape or biting fingernails may bring on wart. Similarly, cuts and nicks from shaving can provide an avenue for infection.
The virus that causes warts, and then recurring warts, is called human papilloma virus or HPV. It enters the skin through very small cuts or wounds. Once in the skin, it may be destroyed by a strong immune system but if you are immune deficient for any reason, the virus can get a foothold.