Cause or coincidence?
The vaccination to help prevent cervical cancer has been on offer here since 2008 and more than 200,000 New Zealand girls have had it.
The scientists say it's safe, but some girls and their families have serious doubts.
They want to know whether Gardasil is to blame for what's happened to them.
In two cases, that was sudden, unexplained death. In others, crippling illness.
Watch the video for the full 3D report.