Vacunas COVID bivalentes y monovalentes: ¿cuáles se aplican en Argentina?

Frente a la suba de casos en el país y en el mundo, los infectólogos insisten en que hay que inmunizarse anualmente y que los mayores de 50 años o inmunocomprometidos deben hacerlo cada 6 meses.

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Las vacunas contra el COVID bivalentes -que empezaron a distribuirse en Argentina a principios del 2023 y aún se aplican en los vacunatorios- fueron diseñadas en 2022 para inmunizar contra la cepa ancestral del coronavirus (la identificada en Wuhan en 2020) y la variante Ómicron.

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Sin embargo, el virus sigue evolucionando y los nuevos sublinajes dominan los contagios, hoy impulsados por el sublinaje JN.1.

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[{"selector":"#anim-130a249e-2342-44b2-a289-ab94bd6e55f2","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-205dc978-c40a-4255-8fe7-b933472ddc83","keyframes":{"transform":["translate3d(0px, -133.62572%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-08438182-c2cc-47f4-8f37-fed2a3e9e848","keyframes":{"transform":["translate3d(114.82649%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-5e2bf099-a022-49c2-95c7-acbffccc87f1","keyframes":{"opacity":[0,1]},"delay":0,"duration":2000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-a2e75d9d-faed-4a01-973e-6bba07264ace","keyframes":{"transform":["scale(0.15)","scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"forwards"}] [{"selector":"#anim-24e9745c-30da-47c6-a3cc-295bb0e1d9c9","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-50a5eb16-6912-4e48-b2ad-3c767d1f19e3","keyframes":{"transform":["translate3d(-96.04651%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] En el hemisferio norte desde septiembre pasado ya se utilizan las vacunas monovalentes actualizadas de Pfizer/BioNTech, Moderna y Novavax para combatir la subvariante XBB.1.5 de Ómicron , la cepa original y otras estrechamente relacionadas, como JN.1.

Conocidas como monovalentes XBB, las fórmulas ARNm actualizadas se aplican en Europa y Estados Unidos y son las que actualmente recomienda la Organización Mundial de la Salud (OMS).

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