CHPSO Patient Safety Alert: Insulin and Influenza Vaccine Switched
50 Hospital Employees in Brazil Given Insulin Instead of Influenza Vaccine

On April 30, 2016, fifty employees at a Brazilian hospital received a dose of insulin instead of the influenza vaccine.

The vaccine and the insulin were stored in the same refrigerator, and were retrieved by a staff member who confused the two similar-looking vials. The staff member took the wrong box from the refrigerator.

Those who received the incorrect, influenza-portioned injection of insulin were hospitalized. No adverse events have been reported.

Always separate look-alike vials and clearly label. Differentiation is key.

Similar events have occurred in the US with a mix-up of influenza and other vaccines, and insulin.  

More details are available here: