Summary

• Surveillance system for chikungunya, dengue, and Zika virus infections implemented from May 1 to November 30, 2017, in mainland France

• Summary of surveillance for chikungunya, dengue, and Zika virus infections in Occitanie in 2016

• Yellow fever: international situation and risk in mainland France

• Surveillance of West Nile and Toscana virus infections implemented from June 1 to October 31 in the Paca, Corsica, and Occitanie regions: 2016 review and 2017 program