Sidney Bell

PhD student

Sidney is now a Computational Biologist at the Chan-Zuckerberg Initiative.

I am a graduate student at the University of Washington, where I am pursuing a joint MS in Epidemiology and PhD in Molecular and Cell Biology. Generally, I am interested in questions about how viruses evolve and interact with their hosts. What allows a virus to infect a new host species? How do viruses adapt to their hosts and evade the immune system? Previous work on SIV cross-species transmission dynamics; current work on dengue virus antigenic evolution.


Dengue genetic divergence generates within-serotype antigenic variation, but serotypes dominate evolutionary dynamics

Estimating vaccine-driven selection in seasonal influenza

Nextstrain: real-time tracking of pathogen evolution

Modern-day SIV viral diversity generated by extensive recombination and cross-species transmission


baltic - baltic - backronymed adaptable lightweight tree import code for molecular phylogeny manipulation, analysis and visualisation. Development is back on the evogytis/baltic branch (i.e. here).

dengue-antigenic-dynamics - Dengue antigenic variation and evolutionary dynamics

siv-cst - Dynamics of cross-species transmission in SIV


Dengue antigenic relationships predict evolutionary dynamics

Dynamics of cross-species transmission in SIV