>>"this is month and a half-old news, at least"
Bingo! Considering the length of time involved, this news is most likely needed to report ahead of the next wave. In other words, management still needed to PR in vitro before reporting in vivo. results.
If Dr. Harris reports these Dengue studies next week, she won't be reporting on in vitro studies without the in vivo follow-up. Considering the speed at which she works--writes protocol, initiates testing, writes reports, reports to conferences, publishes, all in less than a year--I suspect her early mouse work may already be completed and she may be vetting the data.
Dr Harris works at a pace rarely seen in these types of facilities and institutions.