diff --git a/README.md b/README.md
index fdb15e11a596ad493daaa0b3be244659c3d4a8fc..752c5160604858dfa17df86b1fff445fc4d05226 100644
--- a/README.md
+++ b/README.md
@@ -15,6 +15,7 @@
 - prior, new introductions
 - prototyping results, trials, investigations
     - PPE
+        - testing: https://gitlab.cba.mit.edu/pub/coronavirus/tracking/-/blob/master/README.md
 - urgent needs
 - topics go here