diff --git a/analyses/simulate_transmission/epidemics_odin_interop.qmd b/analyses/simulate_transmission/epidemics_odin_interop.qmd
index 0c1b7b2..adb4d92 100644
--- a/analyses/simulate_transmission/epidemics_odin_interop.qmd
+++ b/analyses/simulate_transmission/epidemics_odin_interop.qmd
@@ -11,6 +11,13 @@ toc: true
 toc_float: true
 ---
 
+```{r, include = FALSE}
+knitr::opts_chunk$set(
+  collapse = TRUE,
+  comment = "#>"
+)
+```
+
 ## Ingredients
 
 This guide shows how to use some of the convenient features of _epidemics_, especially the classes that describe populations, interventions, and vaccination regimes, with models that are generated by _odin_.