I might do a random surprising fact of the week for a few weeks...

First, I suspect might surprise people.

Timothy Brown, the first patient cured using a Ccr5 difficient doner, had both R5 and X4 strains of HIV

https://www.nejm.org/doi/full/10.1056/NEJMoa0802905



“The ultradeep sequencing analysis revealed a proportion of 2.9% for the X4 and dual-tropic variants combined.”