From 82a0c3bc47acc6aed6182b281bd5e22d08f8ef7b Mon Sep 17 00:00:00 2001
From: Matt Graham <matthew.m.graham@gmail.com>
Date: Mon, 17 May 2021 14:21:31 +0100
Subject: [PATCH] Fixing computation of indices in malaria cure event (#272)

---
 src/tlo/methods/malaria.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/tlo/methods/malaria.py b/src/tlo/methods/malaria.py
index 30447bf726..a901e79166 100644
--- a/src/tlo/methods/malaria.py
+++ b/src/tlo/methods/malaria.py
@@ -1196,7 +1196,7 @@ def apply(self, population):
                               (df.ma_date_tx < (self.sim.date - DateOffset(days=7)))]
 
         # clear symptoms
-        all_cured = (clinical_inf + severe_inf) if len(severe_inf) else clinical_inf
+        all_cured = clinical_inf.union(severe_inf) if len(severe_inf) else clinical_inf
 
         for idx in all_cured:
             self.sim.modules["SymptomManager"].clear_symptoms(