A surgical mask and an HIV/AIDS awareness ribbon. (image) NIH/National Institute of Allergy and Infectious Diseases Share Print E-Mail Caption A surgical mask and an HIV/AIDS awareness ribbon. 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.