Mosquito Vaccine Trial Partipant Recieves Injection (image) NIH/National Institute of Allergy and Infectious Diseases Share Print E-Mail Caption A participant receives an injection in an NIH trial examining a vaccine intended to provide broad protection against a range of mosquito-borne diseases. The study is placebo-controlled and double-blind, so neither the participant nor the nurse performing the injection know if the participant received the investigational vaccine or a placebo injection of sterile water. Credit NIAID Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.