In a Brampton courthouse last summer, Dr. Emma Cory took the stand to testify about evidence she had provided in a child abuse case. Two and a half years earlier, in December 2021, the mother on trial had brought her infant to a clinic. Akanksha Sriram was worried because her daughter had a fever and skin markings that she said had appeared out of nowhere. The markings looked like bruises. That concerned doctors, who couldn’t immediately identify a medical explanation.