Seasonal influenza vaccines are formulated with multiple virus strains (multivalent) because the exact virus strains that will dominate in the next season cannot be predicted, so including multiple strains improves the likelihood of protection.
November 07, 2025
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Explains the rationale for multivalent formulation of seasonal influenza vaccines.
The 2025 study found that seasonal non-mRNA vaccines for influenza and pneumonia did not show the same tumor responsiveness or survival-associated effects as the mRNA COVID-19 vaccine when administered near the start of immune checkpoint inhibitor therapy.
October 19, 2025
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Comparative observation within the clinical dataset contrasting mRNA COVID-19 vaccine effects with non-mRNA influenza and pneumococcal vaccines.