Although the Zika virus was identified in the late 1940s, a mass outbreak did not occur until recently. Because most of the world is not immune to this virus, it spreads very quickly. Readers discover the history of the Zika virus, facts about its recent spread, the symptoms of the disease, and ways people can protect themselves against it. Full-color photographs and engaging sidebars augment this detailed discussion of a disease that is still mysterious to much of the general public.