CAMBRIDGE, Mass.--(BUSINESS WIRE)--Alnylam Pharmaceuticals, Inc. (Nasdaq: ALNY), a leading RNAi therapeutics company, today announced that it has initiated a Phase II experimental infection trial with ALN-RSV01 for the treatment of respiratory syncytial virus (RSV) infection. This trial is designed to evaluate the safety, tolerability, and anti-viral activity of ALN-RSV01 in adult subjects experimentally infected with RSV. ALN-RSV01 is the industry’s most advanced RNAi therapeutic program for the treatment of an infectious disease and is an Alnylam proprietary program.