The short answer is no, not yet. This now official California public health emergency is not yet affecting children. But we are at a stage where we might be able to prevent further spread of the disease. This article from a pediatric expert clearly outlines what monkey pox is and what the risk is:
https://www.theskimm.com/parenting/monkeypox-in-children-730zV2wvznJxYT30pkhKyA
https://www.theskimm.com/parenting/monkeypox-in-children-730zV2wvznJxYT30pkhKyA