Wood County death certificates are being microfilmed and posted online at the following website. I've listed the years that are already online. It's an excellent website made possible by the West Virginia Division of Culture and History and includes birth and marriage records as well. As it is a work in progress, you may need to check back often to find the record you're looking for.
http://www.wvculture.org/vrr/va_select.aspxWood: 1810, 1820, 1847, 1853 - 1861, 1863 - 1874, 1876 - 1967