Is that actually the case? : Maybe
Do the reports show that in early 2013 the flu shot was only 9% effective in the elderly? : No
It might be the case that the flu shot's effectiveness was only 9% in the elderly, but the analysis that the CDC does isn't able to support a statement as strong as "the flu shot's effectiveness in group X is Y%". They can only give ranges.
What is true is that the CDC's point estimate for the flu vaccine effectiveness against the 2013 flu A (H3N2) in people aged 65 or older is 9%, with a 95% confidence interval that spans from -84% to 55%. They suggest interpreting these results with caution.
In more general terms, the CDC says the following things:
CDC's vaccine effectiveness study measured lower vaccine effectiveness among people 65 and older against flu A this season than it did among other age groups.
One possible explanation for this is that some older people did not mount an effective immune response to the flu A (H3N2) component of this season’s vaccine; however, it’s not possible to say this for certain.
Against flu B, effectiveness in the 65 and older age group was found to be similar to that in other age groups: 67% with a 95% confidence interval that spans from 51% to 78%.