California public health officials are taking steps to prepare for the upcoming school year. They are urging families to take action to ensure their children's health. Families are being advised to verify that their children have received all necessary vaccinations.

This is a precautionary measure to be taken before the start of the school year. Further information on the required immunizations and the urgency of the officials' appeal can be found through California public health officials or local news sources such as KTVU FOX 2 News.