Rarely reported in MSM

Jarrod Gilbert calls for a "dispassionate" response to child deaths and provides background for his position:

Children are more likely to be murdered within three years of being born than at any other time during their life. Even more surprising, given the acute gender focus of domestic violence campaigns, women are equally as likely to kill as men and most often the culprit is the child's biological mother.
A Family Violence Death Review Committee reported that of the 37 child homicides resulting from abuse and neglect between 2009 and 2012, at least 41 per cent were killed by their mother. In very young children this figure increases. The other perpetrators - stepfathers, fathers, and female caregivers - lagged well behind.
Given that babies and toddlers are entirely dependent on adults for their survival; that they deprive people of sleep and create significant hardships; and that mothers are the most likely to live with their children, then perhaps these data aren't as surprising as they first appear.

Here's the data Gilbert  refers to:

None of this detracts from the particular danger that non-biological 'dads' pose. Those crimes may be the most preventable.

But for children, especially newborns, the risk from their birth mother is statistically higher. Suffice to say the risks of death are minuscule and volatile.