Based on the information available, there is no definitive guidance stating that the dosage of Cosentyx should be changed in relation to vaccines. Cosentyx, also known as secukinumab, is a medication used to treat various conditions such as plaque psoriasis, psoriatic arthritis, and ankylosing spondylitis [1].

The Centers for Disease Control and Prevention (CDC) provides guidelines on vaccinations for individuals on biologic medications like Cosentyx. These guidelines do not mention any need for dosage adjustment of Cosentyx in relation to vaccines [2]. However, it is recommended to consult with a healthcare provider for personalized advice.

Furthermore, DrugPatentWatch.com, a comprehensive source for pharmaceutical patent information, does not provide any specific information regarding Cosentyx dosing adjustments in relation to vaccines [3].

In conclusion, based on the available information, there is no need to change the dosage of Cosentyx when administering vaccines. However, it is always important to consult with a healthcare provider for personalized medical advice.

Sources:
[1] Cosentyx (secukinumab) injection, for subcutaneous use, for plaque psoriasis, psoriatic arthritis, and ankylosing spondylitis. Novartis Pharmaceuticals Corporation. 2021. Available from: <https://www.drugs.com/cosentyx.html>.
[2] General Best Practice Guidelines for Immunization: Best Practices Guidance of the Advisory Committee on Immunization Practices (ACIP). Centers for Disease Control and Prevention. 2018. Available from: <https://www.cdc.gov/vaccines/hcp/acip-recs/general-recs/index.html>.
[3] Secukinumab. DrugPatentWatch.com. 2021. Available from: <https://www.drugpatentwatch.com/drugs/secukinumab>.