Interactions : אינטראקציות

4.5         Interaction with other medicinal products and other forms of interaction

Co-administration of Quadrivalent Influenza Vaccine (Split Virion, Inactivated) High Dose with an investigational booster 100 mcg dose of COVID-19 mRNA vaccine (nucleoside modified/elastomeran) has been evaluated in a limited number of participants in a descriptive clinical study (see sections 4. And 5.1). If Efluelda needs to be given at the same time as another injectable vaccine(s), immunisation should be carried out on separate limbs.

It should be noted that the adverse reactions may be intensified by any co-administration.

The immunological response may be reduced if the patient is undergoing immunosuppressant treatment.

Following influenza vaccination, false positive results in serology tests using the ELISA method to detect antibodies against HIV1, Hepatitis C and especially HTLV1 have been reported. An appropriate Western Blot test should be used to confirm or disprove the results of the ELISA test. The transient false positive reactions could be due to a non-specific IgM response induced by influenza vaccine.