Volume 24, Number 9—September 2018
Synopsis
Travel-Associated Zika Cases and Threat of Local Transmission during Global Outbreak, California, USA
Figure 1

Figure 1. Number of human Zika virus infections in residents, by month and year of onset and country of travel (top 10 countries shown), California, USA, October 1, 2015–September 1, 2017. Month was determined by date of symptom onset for symptomatic persons or specimen collection date for asymptomatic persons.