Early data from Moderna Inc.’s COVID-19 vaccine – the first to be tested in the United States – showed that it produced protective antibodies in a small group of healthy volunteers, the company said.

Companies and scientists are racing to create a Zika vaccine as concern grows over the mosquito-borne virus that has been linked to severe birth defects and is spreading quickly through the Americas. Zika is now present in 23 countries and territories in the Americas. Brazil, the hardest-hit country, has reported around 3,700 cases of the […]