The switch does not associate a host route with a specific area. Therefore, if you create a host route in a nonbackbone area, nonbackbone (nonOSPF core) areas do not advertise it.
For example, in an OSPF network with multiple areas, including areas not adjacent to the core, which use virtual links, a host route on a router that belongs to a nonOSPF core area is not advertised on noncore routers.
To ensure host route advertisement, disable and enable OSPF on the noncore routers.