“New research shows that vaccinations for dengue increase the number of people contracting Zika. It also shows that the more people in a particular population that are vaccinated against dengue, the earlier and larger the Zika outbreak.”
Biao Tang, Yanni Xiao, Jianhong Wu. Implication of vaccination against dengue for Zika outbreak. Scientific Reports, 2016; 6: 35623 DOI: 10.1038/srep35623