Early report in the NZ Herald
""The passenger - who, according to family, had a medical history which had not been disclosed to the airline prior to the flight"
https://www.nzherald.co.nz/nz/news/a...ectid=12184297
A later report
https://www.nzherald.co.nz/nz/news/a...ectid=12188728
I can't find it now but the family apparently reported that the child had a severe asthma attack on Boxing Day