Government and industry fail to protect the public when they suggest "carefully following instructions" is enough to prevent vaccine errors.

ISMP Medication Safety Alert! Acute Care Edition. February 25, 2016;21:1-5.

From a human error perspective, the suggestion to be more careful is not a reliable safety strategy. Discussing weaknesses associated with this approach as a way to improve vaccine safety, this newsletter article provides recommendations focused on addressing system andhuman factors to reduce errors related to two-component vaccines.