Las vacunas nos han permitido erradicar peligrosas enfermedades como la viruela o la polio. Pero, a pesar de sus grandes beneficios, las vacunas han estado al centro de grandes peleas políticas, éticas y económicas.

Vaccines have allowed us to eradicate dangerous illnesses such as polio and smallpox. But, despite its great benefits, vaccines have been at the center of political, ethical and economic controversies. Meredith Wadman is a correspondent for the magazine Science, the most prestigious scientific publication, and in her book "The Vaccine Race", she reveals a story of global impact filled with surprises.