A vaccine to protect against the Zika virus produced an immune response in the first phase of a randomized clinical trial, researchers report in the Lancet. They are now testing the efficacy of the vaccine.
Working as the medical reporter for The Canadian Press, Helen Branswell found herself in the midst of an epidemic.
Scientists are still trying to gain a better understanding of the Zika virus–which the World Health Organization has called an international public health emergency–while public health officials scramble to manage outbreaks without a complete scientific picture of the disease.
