Disseminated infection in a patient with diffuse large B-cell lymphoma treated with immunotherapy.

Immunotherapies can lead to an immune compromised state that can allow for opportunistic pathogens such as to flourish. The vast majority of infections occur in immunocompromised hosts. Here we describe disseminated infection in a patient with diffuse large B-cell lymphoma treated with immunotherapy.

The weakness of weak ties for novel information diffusion.

Weak ties are thought to facilitate the diffusion of information through social networks because of their tendency to span otherwise distant subgroups. However, this logic assumes that weak relationships have the same capacity to transmit information as those that are strong. I argue that weak ties, especially the kind that span subgroups, are often also lower-capacity.

The evolutionary advantage of limited network knowledge.

Groups of individuals have social networks that structure interactions within the groups; evolutionary theory increasingly uses this fact to explain the emergence of cooperation (Eshel and Cavalli-Sforza, 1982; Boyd and Richerson, 1988, 1989; Ohtsuki et al., 2006; Nowak et al., 2010; Van Veelen et al.