Spreading the Word (IMAGE) Brown University Caption Pastors march in Philadelphia to help stop the spread of HIV. Pastors say they can reinforce public health messages about testing and social justice that are faith-friendly. Credit Bates Photography Inc Usage Restrictions With credit License Licensed content 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.