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¿Preguntas sobre el cáncer?
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1-800-422-6237
(1-800-4-CANCER)
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Llame de lunes a viernes de 9:00 a.m. a 4:30 p.m., hora local en Estados Unidos y sus territorios. |
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| Debilitado o diluido. Con frecuencia se utilizan como vacunas cepas atenuadas de las bacterias y virus que causan enfermedades. Las cepas debilitadas se usan como vacunas porque estimulan una respuesta inmunitaria protectora, al mismo tiempo que no causan ninguna enfermedad, o solo causan enfermedades leves en la persona que recibe la vacuna. |
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