diff --git a/cara/models.py b/cara/models.py
index c8f97d6c..64962b4c 100644
--- a/cara/models.py
+++ b/cara/models.py
@@ -384,7 +384,7 @@ class Virus:
 Virus.types = {
     'SARS_CoV_2': Virus(
         halflife=1.1,
-        viral_load_in_sputum=10e8,
+        viral_load_in_sputum=1e9,
         # No data on coefficient for SARS-CoV-2 yet.
         # It is somewhere between 0.001 and 0.01 to have a 50% chance
         # to cause infection. i.e. 1000 or 100 SARS-CoV viruses to cause infection.