This decision addresses a motion for leave to intervene brought by the Medical Officer of Health (City of Toronto) (MOH) in an appeal concerning the vaccination of children.
The appellant sought to overturn an arbitrator's decision that declined to order the children's vaccination, while the respondent opposed vaccination.
The court determined it had jurisdiction to hear the intervention motion remotely and in writing during the COVID-19 pandemic.
Applying the test for intervention, the court found that the MOH had a substantial public interest in the issues of vaccine efficacy, expert evidence gatekeeping, and judicial notice of public health policy.
The MOH's distinct public health perspective was deemed a useful contribution without causing injustice to the parties.
Leave to intervene was granted.