# Co-infection dynamics paper submitted

What happens when two diseases spread through a population?

We submitted a new paper to *Physical Review E* today, about
co-infection disease dynamics. Co-infection deals with the situation
where two diseases spread through the same contact network, where
having had one disease affects a person's susceptibility to the
other. We'#re particularly interested in *clustered* networks, where
there are short and long cycles of "acquaintances" that can give a
disease more opportunities to spread, and can give rise to quite
complicated patterns of infection history.

We managed to show that clustering affects the epidemic threshold for a disease outbreak in surprising ways, increasing the threshold on a clustered human contact network: the opposite to what happens in an ER network. (Creating that plot, incidentally, involved over a week of computation on a 72-core compute cluster since it needed lots of repeated experiments to get the variance down to an acceptable level.)

Peter Mann, V. Anne Smith, John Mitchell, and Simon Dobson.
Co-operative co-infection dynamics on clustered networks.
*Physical Review E*, 2021.
To appear. Preprint available on arXiv.
URL: https://arxiv.org/abs/2012.09457.