diff --git a/src/covid-19/covid_19_utils/covid_19_utils/converters/jhu.py b/src/covid-19/covid_19_utils/covid_19_utils/converters/jhu.py
index a6b53cdafbdfc3631f6f09308eff53a665143000..dfd6b79535e96132a5fb0a0ab980720c5df0fbd6 100644
--- a/src/covid-19/covid_19_utils/covid_19_utils/converters/jhu.py
+++ b/src/covid-19/covid_19_utils/covid_19_utils/converters/jhu.py
@@ -79,6 +79,7 @@ class JhuCsseGlobalCaseConverter(CaseConverterImpl):
         merged = df.loc[df["country"].isin(pop_ser.index)].copy()
         merged["population"] = merged.apply(lambda r: pop_ser.loc[r["country"]], axis=1)
         merged['region_iso'] = merged['country']
+        merged['tested'] = np.nan
         return self._set_common_columns(merged)
 
     def read_ser(self, path, name):