  This erratum highlights a very serious error in a paper published by SIAM
Review in 2011. The error is in Section 6.2 of [1]. It is very important to
notify this error because of the following two reasons: (i) [1] is one of the
most cited contributions in the field of identifiability of viral dynamics
models, and (ii)the error is relevant because, as a result of it, a very
popular viral model (perhaps the most popular in the field of HIV dynamics) has
been classified as identifiable. In contrast, three of its parameters are not
identifiable, even locally. This erratum first proves the non uniqueness of the
three unidentifiable parameters by exhibiting infinitely many distinct but
indistinguishable values of them. The non uniqueness is even local. Then, this
erratum details the error made by the authors of [1] which produced the claimed
(but false) local identifiability of all the model parameters.
