This is a very interesting question. With the shaken baby syndrome infants are by violently shaken and this is done several times. Your baby was on your nanny's back and at most her head moved when she jumped. Her head would hopefully have been cushioned by the nanny's body. So it seems unlikely that any harm was done. You should watch for any signs of vomiting, drowsiness,food refusal and irritability. If any signs like this should occur take your baby to your paediatrician.
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