Visterra tops off series C round

Anti-infectives company Visterra Inc. (Cambridge, Mass.) raised $23.6 million in an extension of a series C round, bringing the round's total to $46.7 million. Visterra raised an initial $23.1 million close in June 2016.

New investors Serum Institute of India Pvt. Ltd. (Pune, India), CTI Life Sciences and Allegheny Financial Group participated, as did existing investors the Bill & Melinda Gates Foundation, MRL Ventures Fund, Vertex Venture Holdings, Polaris Partners, Flagship Pioneering, Omega Funds, Cycad Group and Alexandria Venture Investments...