Congratulations to DAC faculty member Aditya Prakash for his new NSF award entitled: "Immunization in Influence and Virus Propagation on Large Networks"! Aditya is exploring the question: given a graph, like a social network or the blogosphere, in which an virus (or meme or rumor) has been spreading for some time, how to select the k best nodes for immunization/quarantining immediately? The work has several applications in public health and epidemiology, viral marketing and social media like Twitter.