alt Hacker NewsThe 50 studies in the cited 2015 book ought to span a range of time, and their keywords could be used to search literature for more recent material.
> Has there been any new information since then?
Since you asked, there apparently was a 2017 followup book by the same author. These links are for that book:
https://harvoa.org/chs/pr/dusbk2.htm
https://www.amazon.com/Ultrasound-Causation-Microcephaly-Vir...
https://www.goodreads.com/book/show/36466945-ultrasound-caus...
That book claims:
> Microcephaly incidence increased 1000x within the area of The Network. This was first observed seven months after The Network began its remote prenatal ultrasound program. Do the math.
Almost every baby is exposed to prenatal ultrasound. What do you think was different about that ultrasound program? Why would prenatal ultrasound cause microencephaly there, but not everywhere?