¿Realmente necesito una segunda dosis de la vacuna contra el Covid-19? I really need both doses?

Para las vacunas Covid-19 actualmente autorizadas, los Centros para el Control y la Prevención de Enfermedades (CDC) resaltan la importancia de recibir una segunda dosis a tiempo de la misma vacuna para una máxima protección. La vacuna ARNm de Pfizer requiere una segunda dosis tres semanas después de la primera. La vacuna ARNm de Moderna requiere una segunda inyección cuatro semanas después de la dosis inicial.

No se ha establecido la necesidad de refuerzos adicionales más allá del régimen de dos dosis para las actuales vacunas ARNm contra el Covid-19.

Otra vacuna, una de Johnson y Johnson, puede requerir de solo una dosis. Todavía están completándose ensayos clínicos.

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