  We present the results of the search for an astrophysical gravitational-wave
stochastic background during the second Einstein Telescope mock data and
science challenge. Assuming that the loudest sources can be detected
individually and removed from the data, we show that the residual background
can be recovered with an accuracy of $1%$ with the standard cross-correlation
statistic, after correction of a systematic bias due to the non-isotropy of the
sources.
