  In cosmological models where local cosmic strings are formed at the end of a
period of inflation, the perturbations are seeded both by the defects and by
the quantum fluctuations. In a subset of these models, for example those based
on $D$-term inflation, the amplitudes are similar. Using our recent
calculations of structure formation with cosmic strings, we point out that in a
flat cosmology with zero cosmological constant and 5% baryonic component,
strings plus inflation fits the observational data much better than each
component individually. The large-angle CMB spectrum is mildly tilted, for
Harrison-Zeldovich inflationary fluctuations. It then rises to a thick Doppler
bump, covering $\ell=200-600$, modulated by soft secondary undulations. The
standard CDM anti-biasing problem is cured, giving place to a slightly biased
scenario of galaxy formation.
