Please note that the password is case sensitive. User Login   E-mail:  Password:  Please note:  Some individuals have found that after successfully signing in, the site continually returns to the log in page when attempting to start a module.  We have found this to be a common problem when accessing the site through a university or other business or institutional portal.  If you encounter this problem, please attempt to access the link directly through a non-networked (i.e., personal) computer. New User? Please register here to continue. Forgot Password? Comments or Problems? E-mail us at: STDCurriculum@cdc.gov