From 1922fb5ff2734e2f706b5660fb2332412db85e29 Mon Sep 17 00:00:00 2001
From: Matthijs Berends <m.s.berends@umcg.nl>
Date: Wed, 10 Sep 2025 15:06:51 +0200
Subject: [PATCH] (v3.0.0.9028) fix as.ab() warning

---
 DESCRIPTION | 2 +-
 NEWS.md     | 2 +-
 R/ab.R      | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/DESCRIPTION b/DESCRIPTION
index fc906449c..66844f443 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,5 +1,5 @@
 Package: AMR
-Version: 3.0.0.9027
+Version: 3.0.0.9028
 Date: 2025-09-10
 Title: Antimicrobial Resistance Data Analysis
 Description: Functions to simplify and standardise antimicrobial resistance (AMR)
diff --git a/NEWS.md b/NEWS.md
index 9ad1a3f65..a7598d50b 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,4 +1,4 @@
-# AMR 3.0.0.9027
+# AMR 3.0.0.9028
 
 This is a bugfix release following the release of v3.0.0 in June 2025.
 
diff --git a/R/ab.R b/R/ab.R
index 3132561cc..c873935cb 100755
--- a/R/ab.R
+++ b/R/ab.R
@@ -202,7 +202,7 @@ as.ab <- function(x, flag_multiple_results = TRUE, language = get_AMR_locale(),
   if (sum(already_known) < length(x)) {
     progress <- progress_ticker(n = sum(!already_known), n_min = 25, print = info) # start if n >= 25
     on.exit(close(progress))
-    if (any(x_new[!already_known] %in% unlist(AMR_env$AV_lookup$generalised_all, use.names = FALSE), na.rm = TRUE)) {
+    if (any(x_new[!already_known & !is.na(x_new)] %in% unlist(AMR_env$AV_lookup$generalised_all, use.names = FALSE), na.rm = TRUE)) {
       warning_("in `as.ab()`: some input seem to resemble antiviral drugs - use `as.av()` or e.g. `av_name()` for these, not `as.ab()` or e.g. `ab_name()`.")
     }
   }