Battle lines over vaccinations were officially drawn Tuesday, when legislation to standardize exemptions and promote compliance was officially filed in the state Senate.
The legislation is aimed at reducing the state's poor vaccination rates for schools and other child care facilities without mandating vaccinations.
Like a failed piece of legislation that proved to be one of the most contentious bills of last year's session, Senate Bill 163 would create a standard form to opt out while preserving existing exemptions for medical reasons or personal beliefs.
Last year, opponents argued the proposal was an intrusion into parental rights and a means of coercion for parents who choose not to vaccinate their children.
The bill is sponsored by Sens. Kevin Priola, R-Henderson, and Julie Gonzales, D-Denver, with Rep. Kyle Mullica, D-Northglenn.
Proponents of the measure Tuesday noted that Democratic Gov. Jared Polis supports the bill.
The bill filed Tuesday would establish a 95% vaccination goal for children and requires schools to notify parents of school immunization rates.
Republican Rep. Dave Williams of Colorado Springs has filed House Bill 1239 that would require medical professionals to inform patients of the risks of inoculations before administering a shot.