In Chile, the incorporation of the protocol for the prevention of vertical transmission (VTPP) of human immunodeficiency virus (HIV) in pregnant women, has reduced HIV transmission in children to less than 2%. Thus, currently the detection of HIV-infected children is uncommon. So, in front a case, compliance with the VTPP must be audited. If it was fully complied, other possible mechanism of HIV transmission should be reviewed. A case is presented in which, having discarded the common causes of

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... contagion, HIV may have been transmitted through the consumption of pre-masked food by an HIV infected person, in this case the mother.