We read with great interest the review by Gonçalves et al.1 about safety, tolerability and side effects of human papillomavirus (HPV) vaccines, discussing the most frequently reported events related to the vaccine. We agree that safety is not a major barrier to vaccination since most of the reported adverse events have been mild or moderate in intensity. We would like to describe two patients w...

Deaths from cholera in London, UK, were recorded weekly from 1824 to 1901. Three features of the time series stand out: (i) cholera deaths were strongly seasonal, with peak mortality almost always in the summer, (ii) the only non-summer outbreaks occurred in the spring of 1832, the autumn of 1848 and the winter of 1853, and (iii) extraordinarily severe summer outbreaks occurred in 1832, 1849, 1...

environment. Herald is suitable for scenarios where the process could be modeled as a tree: starting from the root node the collection of items is distributed along the nodes where they can be processed, forwarded to other nodes, and duplicated if necessary. Herald assigns a specific software agent to each node of the tree which participates into the dispatching process according to the knowled...

SCIENCE sciencemag.org P H O T O S : L IE B E R G R O U P , H A R V A R D U N IV E R S IT Y T he wires emerging from the heads of the small black mice—strain C57BL6—are a tip-off. If you’re a scifi aficionado, you know that this is how cyborgs get their start. Charles Lieber, a chemist at Harvard University, and his colleagues have injected the brains of the mice with tiny, meshlike electronic ...