Duplicate title to Omori, R., Adams, B., & Sasaki, A. ORCID: https://orcid.org/0000-0003-3582-5865 (2010). Coexistence conditions for strains of influenza with immune cross-reaction. Journal of Theoretical Biology 262 (1) 48-57. 10.1016/j.jtbi.2009.09.015.