diff --git a/data/json/items/comestibles/med.json b/data/json/items/comestibles/med.json
index 4dda480cfa35e..520434fcab50c 100644
--- a/data/json/items/comestibles/med.json
+++ b/data/json/items/comestibles/med.json
@@ -991,7 +991,7 @@
     "type": "COMESTIBLE",
     "comestible_type": "MED",
     "name": "flu shot",
-    "description": "Pharmaceutical flu shot designed for mass vaccinations, still in the packaging.  Purported to provide immunity to influenza.",
+    "description": "Pharmaceutical flu shot designed for mass vaccinations, still in the packaging.  Purported to provide immunity to influenza, for the flu season for which it was developed.",
     "weight": "12 g",
     "volume": "10ml",
     "price": 5000,
diff --git a/data/json/npcs/tacoma_ranch/NPC_ranch_nurse.json b/data/json/npcs/tacoma_ranch/NPC_ranch_nurse.json
index 96ceffbc8bf19..b20c25c6d1cf6 100644
--- a/data/json/npcs/tacoma_ranch/NPC_ranch_nurse.json
+++ b/data/json/npcs/tacoma_ranch/NPC_ranch_nurse.json
@@ -294,7 +294,7 @@
     "item": "emergency_book",
     "start": "ranch_nurse_8",
     "origins": [ "ORIGIN_SECONDARY" ],
-    "followup": "MISSION_RANCH_NURSE_10",
+    "followup": "MISSION_RANCH_NURSE_11",
     "dialogue": {
       "describe": "We need help…",
       "offer": "Have you heard of a book called the 'Guide to Advanced Emergency Care?'  I really need a copy.  The doctor is requesting a lot of supplies that I'm not familiar with but I believe I could make if I could get a copy of the book.",
diff --git a/src/iuse.cpp b/src/iuse.cpp
index 8ad6c02315c05..2ca64518631e7 100644
--- a/src/iuse.cpp
+++ b/src/iuse.cpp
@@ -834,8 +834,16 @@ int iuse::vaccine( player *p, item *it, bool, const tripoint & )
 int iuse::flu_vaccine( player *p, item *it, bool, const tripoint & )
 {
     p->add_msg_if_player( _( "You inject the vaccine." ) );
-    p->add_msg_if_player( m_good, _( "You no longer need to fear the flu, at least for some time." ) );
-    p->add_effect( effect_flushot, 24_weeks, num_bp, false );
+    time_point expiration_date = calendar::start_of_cataclysm + 24_weeks;
+    time_duration remaining_time = expiration_date - calendar::turn;
+    // FIXME Removing feedback and visible status would be more realistic
+    if( remaining_time > 0_turns ) {
+        p->add_msg_if_player( m_good, _( "You no longer need to fear the flu, at least for some time." ) );
+        p->add_effect( effect_flushot, remaining_time, num_bp, false );
+    } else {
+        p->add_msg_if_player( m_bad,
+                              _( "You notice the date on the packaging is pretty old.  It may no longer be effective." ) );
+    }
     p->mod_pain( 3 );
     item syringe( "syringe", it->birthday() );
     p->i_add( syringe );