In Los Angeles County, the rise in personal belief exemptions is most prominent in wealthy coastal and mountain communities.
The more than 150 schools with exemption rates of 8% or higher for at least one vaccine were located in census tracts where the incomes averaged $94,500 — nearly 60% higher than the county median.
That 8% exemption level is the point at which lack of immunization threatens herd immunity, an important factor in preventing and constraining disease outbreaks.
via Rich, educated and stupid parents are driving the vaccination crisis – LA Times.
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