There are minimum technical requirements for the Colorado Immunization Information System. There are also recommended technical specifications which are necessary for the CIIS web application to run at optimal efficiency and ensure the highest level of security for the system. Click here
to view the minimum requirements vs. recommended specifications for the Colorado Immunization Information System and see if your computer is ready for the CIIS web application.
All sites must have Internet access in order to access and participate in CIIS. Frequently, new CIIS Users experience difficulty in accessing the Colorado Immunization Information System because they do not have the correct Internet settings configured on their computer. For more information on virus protection and required Internet settings, please click here.
Need help with disabling pop-up blockers? Click here. ![]()
For immediate technical assistance, please contact the CIIS Help Desk at (303) 692-2437 or toll-free at 1 (888) 611-9918. You can also reference the CIIS User Troubleshooter Guide
for help with technical issues.