California enacts SB 276, tightening medical exemptions to school vaccination requirements
On 9 September 2019 California Governor Gavin Newsom signed SB 276, authored by State Senator Richard Pan. In the causal graph this event strengthens Public and donor investment in immunization systems, a driver that strengthens First-dose measles vaccination coverage (global, MCV1) — an improving welfare path.
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On 9 September 2019 California Governor Gavin Newsom signed SB 276, authored by State Senator Richard Pan. The law created a standard statewide medical-exemption form transmitted through the California Immunization Registry and a state review process for exemptions that do not meet applicable clinical criteria, strengthening administration of school-entry vaccination requirements.
Who was responsible
Contribution type and responsibility level for each recorded actor — not sole-author shorthand.
Gavin Newsom
PersonDirect responsibility
verified
Governor Gavin Newsom signed SB 276 on 9 September 2019. His contribution is the executive act that enacted the measure, while authorship and legislative passage belong to other participants.
What changed
Fact → Driver → Indicator. Relationship strength orders the paths; it is not the observed indicator movement.
- FactCalifornia enacts SB 276, tightening medical exemptions to school vaccination requirements
- strengthensDriverPublic and donor investment in immunization systems
- strengthensIndicators (2)First-dose measles vaccination coverage (global, MCV1)
impact weight 0.55 · Effect from 9 September 2019 · verified
Closing an exemption loophole strengthens the institutional delivery system that sustains high school-entry immunization coverage.
Strengthens · Relationship strength 0.44 (weight 0.55 × strength 0.8)
Observed
84% of one-year-olds · 11 below the normal line (2024)
Worse than normal7 readings, 2018–2024: fell from 86.4% of one-year-olds to 84% of one-year-olds.
Above normal = better
Weakens · Relationship strength 0.33 (weight 0.55 × strength 0.6)
Observed
37.4 deaths per 1,000 live births · 12.4 above the normal line (2024)
Worse than normal7 readings, 2018–2024: fell from 40 deaths per 1,000 live births to 37.4 deaths per 1,000 live births.
Above normal = worse
Causal path
How this event connects to drivers and indicators in the graph.
- ActorGavin Newsom
- contributed toFactCalifornia enacts SB 276, tightening medical exemptions to school vaccination requirements
- strengthensDriverPublic and donor investment in immunization systems
- strengthensIndicatorFirst-dose measles vaccination coverage (global, MCV1)
Cite this page
Factrail. (2026). California enacts SB 276, tightening medical exemptions to school vaccination requirements. Factrail. https://factrail.ai/facts/ph-fact-pan-sb276-medical-exemptions-2019
https://factrail.ai/facts/ph-fact-pan-sb276-medical-exemptions-2019
Accessed 15 October 2026.
By the Factrail desk · Method: how we source and score · Last reviewed
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