  We revisit some of the recent neutrino observations and anomalies in the
context of sterile neutrinos. Based on a general parametrization motivated in
the presence of sterile neutrinos, the consistency of the MINOS disappearance
data with additional sterile neutrinos is discussed. We also explore the
implications of sterile neutrinos for the measurement of $|U_{\mu3}|$ in this
case. Regarding the determination of $|U_{e3}|$, we observe that the existence
of sterile neutrinos may induce a significant modification of the $\theta_{13}$
angle in neutrino appearance experiments like T2K and MINOS, over and above the
ambiguities and degeneracies that are already present in 3-neutrino parameter
extractions. The modification is less significant in reactor neutrino
experiments like Double-CHOOZ, Daya Bay and RENO and therefore the extracted
$|U_{e3}|$ value when sterile neutrinos are present is close to the one that
would be obtained in the 3-neutrino case. We also conclude that the results
from T2K imply a 90% C.L. lower-bound on $|U_{e3}|$, in the "$\,3+2$" neutrino
case, which is still within the sensitivity of future reactor neutrino
experiments like Daya Bay, and consistent with the one-$\sigma$ range of
$\sin^22\theta_{13}$ recently reported by the Double-CHOOZ experiment. Finally,
we argue that for the recently determined best-fit parameters, the results in
the "$\,3+1$" scenario would be very close to the medium/long baseline results
obtained in the "$\,3+2$" case analyzed in this work.
