It looks like the zika virus preferentially infects neural progenitor cells (NSCs). In adults, the effects of the disease appear no more significant than the flu, but this new proof that NSC infection occurs in adults as well as babies suggests that it might inhibit neurogenesis for an indefinite period of time, perhaps resulting in accelerated cognitive decline.
That's the bad news, but it's also the good news. It seems we now have a crude design for the preferential targetting of NSCs with drugs or CRISPR, coutesy of some as yet unidentified invasive mechanism in zika. I suspect this will turn out to be the equivalent of GP120 in HIV, the "harpoon" which allows it to infect T cells.
Might we modify zika to transport handy CRISPR modifications into NSCs, leaving other cell types relatively untouched? This has interesting ramifications for dementia and possibly brain cancer.
Meanwhile, you might want to stock up on DEET...