Here's an old article highlighting escape mutations evolving within the span of a single person's infection. * [HIV evolution: CTL escape mutation and reversio

Here's an old article highlighting escape mutations evolving within the span of a single person's infection. * [HIV evolution: CTL escape mutation and reversion after transmission - PubMed](https://pubmed.ncbi.nlm.nih.gov/14770175/ https://pubmed.ncbi.nlm.nih.gov/14770175/)