diff --git a/.Rbuildignore b/.Rbuildignore
index ad2cea0a..2a36087a 100755
--- a/.Rbuildignore
+++ b/.Rbuildignore
@@ -30,6 +30,7 @@
 ^vignettes/datasets\.Rmd$
 ^vignettes/EUCAST\.Rmd$
 ^vignettes/MDR\.Rmd$
+^vignettes/other_pkg.*\.Rmd$
 ^vignettes/PCA\.Rmd$
 ^vignettes/resistance_predict\.Rmd$
 ^vignettes/SPSS\.Rmd$
diff --git a/.github/workflows/website.yaml b/.github/workflows/website.yaml
index c128221f..76755456 100644
--- a/.github/workflows/website.yaml
+++ b/.github/workflows/website.yaml
@@ -65,7 +65,11 @@ jobs:
       - name: Set up R dependencies
         uses: r-lib/actions/setup-r-dependencies@v2
         with:
-          extra-packages: any::pkgdown
+          # add extra packages for website articles:
+          extra-packages: |
+            any::pkgdown
+            any::tidymodels
+            any::data.table
 
       # Send updates to repo using GH Actions bot
       - name: Create website in separate branch
diff --git a/DESCRIPTION b/DESCRIPTION
index c9dff954..881700da 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,6 +1,6 @@
 Package: AMR
-Version: 2.0.0.9018
-Date: 2023-05-17
+Version: 2.0.0.9019
+Date: 2023-05-24
 Title: Antimicrobial Resistance Data Analysis
 Description: Functions to simplify and standardise antimicrobial resistance (AMR)
   data analysis and to work with microbial and antimicrobial properties by
diff --git a/NEWS.md b/NEWS.md
index 0dd1195f..f7b2bf3f 100755
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,4 +1,4 @@
-# AMR 2.0.0.9018
+# AMR 2.0.0.9019
 
 ## Changed
 * Added oxygen tolerance to over 25,000 bacteria in the `microorganisms` data set
@@ -12,6 +12,7 @@
 * Fixed some WHONET codes for microorganisms and consequently a couple of entries in `clinical_breakpoints`
 * Fixed a bug for `as.mo()` that led to coercion of `NA` values when using custom microorganism codes
 * Fixed usage of `icu_exclude` in `first_isolates()`
+* Improved `as.mo()` algorithm for searching on only species names
 
 
 # AMR 2.0.0
diff --git a/R/ab_property.R b/R/ab_property.R
index 205f5de0..fb5eba44 100755
--- a/R/ab_property.R
+++ b/R/ab_property.R
@@ -69,7 +69,7 @@
 #' ab_atc_group2("AMX")
 #' ab_url("AMX")
 #'
-#' # smart lowercase tranformation
+#' # smart lowercase transformation
 #' ab_name(x = c("AMC", "PLB"))
 #' ab_name(x = c("AMC", "PLB"), tolower = TRUE)
 #'
diff --git a/R/av_property.R b/R/av_property.R
index e3e10f18..b3a8cb63 100755
--- a/R/av_property.R
+++ b/R/av_property.R
@@ -61,7 +61,7 @@
 #' av_group("ACI")
 #' av_url("ACI")
 #'
-#' # smart lowercase tranformation
+#' # lowercase transformation
 #' av_name(x = c("ACI", "VALA"))
 #' av_name(x = c("ACI", "VALA"), tolower = TRUE)
 #'
diff --git a/R/first_isolate.R b/R/first_isolate.R
index 1283df01..5a4aae73 100755
--- a/R/first_isolate.R
+++ b/R/first_isolate.R
@@ -191,13 +191,14 @@ first_isolate <- function(x = NULL,
   }
   meet_criteria(col_specimen, allow_class = "character", has_length = 1, allow_NULL = TRUE, is_in = colnames(x))
   if (is.logical(col_icu)) {
-    meet_criteria(col_icu, allow_class = "logical", has_length = c(1, nrow(x)), allow_NA = TRUE)
+    meet_criteria(col_icu, allow_class = "logical", has_length = c(1, nrow(x)), allow_NA = TRUE, allow_NULL = TRUE)
     x$newvar_is_icu <- col_icu
   } else if (!is.null(col_icu)) {
+    # add "logical" to the allowed classes here, since it may give an error in certain user input, and should then also say that logicals can be used too
     meet_criteria(col_icu, allow_class = c("character", "logical"), has_length = 1, allow_NULL = TRUE, is_in = colnames(x))
     x$newvar_is_icu <- x[, col_icu, drop = TRUE]
   } else {
-    x$newvar_is_icu <- NA_real_
+    x$newvar_is_icu <- NA
   }
   # method
   method <- coerce_method(method)
diff --git a/R/mo.R b/R/mo.R
index 345f4bbe..bae76f10 100755
--- a/R/mo.R
+++ b/R/mo.R
@@ -281,9 +281,16 @@ as.mo <- function(x,
       x_parts <- strsplit(gsub("-", " ", x_out, fixed = TRUE), " ", fixed = TRUE)[[1]]
 
       # do a pre-match on first character (and if it contains a space, first chars of first two terms)
-      if (length(x_parts) %in% c(2, 3)) {
+      if (length(x_parts) == 1) {
+        # for genus or species or subspecies
+        filtr <- which(AMR_env$MO_lookup$full_first == substr(x_parts, 1, 1) |
+                         AMR_env$MO_lookup$species_first == substr(x_parts, 1, 1) |
+                         AMR_env$MO_lookup$subspecies_first == substr(x_parts, 1, 1))
+      } else if (length(x_parts) %in% c(2, 3)) {
         # for genus + species + subspecies
-        filtr <- which(AMR_env$MO_lookup$full_first == substr(x_parts[1], 1, 1) & (AMR_env$MO_lookup$species_first == substr(x_parts[2], 1, 1) | AMR_env$MO_lookup$subspecies_first == substr(x_parts[2], 1, 1)))
+        filtr <- which(AMR_env$MO_lookup$full_first == substr(x_parts[1], 1, 1) &
+                         (AMR_env$MO_lookup$species_first == substr(x_parts[2], 1, 1) |
+                            AMR_env$MO_lookup$subspecies_first == substr(x_parts[2], 1, 1)))
       } else if (length(x_parts) > 3) {
         first_chars <- paste0("(^| )", "[", paste(substr(x_parts, 1, 1), collapse = ""), "]")
         filtr <- which(AMR_env$MO_lookup$full_first %like_case% first_chars)
diff --git a/R/sir.R b/R/sir.R
index 06c07e2d..aaafd029 100755
--- a/R/sir.R
+++ b/R/sir.R
@@ -759,7 +759,7 @@ as_sir_method <- function(method_short,
   if (is.null(mo)) {
     stop_("No information was supplied about the microorganisms (missing argument `mo` and no column of class 'mo' found). See ?as.sir.\n\n",
       "To transform certain columns with e.g. mutate(), use `data %>% mutate(across(..., as.sir, mo = x))`, where x is your column with microorganisms.\n",
-      "To tranform all ", method_long, " in a data set, use `data %>% as.sir()` or `data %>% mutate_if(is.", method_short, ", as.sir)`.",
+      "To transform all ", method_long, " in a data set, use `data %>% as.sir()` or `data %>% mutate_if(is.", method_short, ", as.sir)`.",
       call = FALSE
     )
   }
diff --git a/_pkgdown.yml b/_pkgdown.yml
index bc8e9642..14571e68 100644
--- a/_pkgdown.yml
+++ b/_pkgdown.yml
@@ -70,9 +70,9 @@ home:
 navbar:
   title: "AMR (for R)"
   left:
-    - text: "Home"
-      icon: "fa-home"
-      href: "index.html"
+    # - text: "Home"
+    #   icon: "fa-home"
+    #   href: "index.html"
     - text: "How to"
       icon: "fa-question-circle"
       menu:
@@ -100,9 +100,9 @@ navbar:
       - text: "Work with WHONET Data"
         icon: "fa-globe-americas"
         href: "articles/WHONET.html"
-      - text: "Import Data From SPSS/SAS/Stata"
-        icon: "fa-file-upload"
-        href: "articles/SPSS.html"
+      # - text: "Import Data From SPSS/SAS/Stata"
+      #   icon: "fa-file-upload"
+      #   href: "articles/SPSS.html"
       - text: "Apply Eucast Rules"
         icon: "fa-exchange-alt"
         href: "articles/EUCAST.html"
@@ -115,16 +115,31 @@ navbar:
       - text: "Get Properties of an Antiviral Drug"
         icon: "fa-capsules"
         href: "reference/av_property.html" # reference instead of an article
+    - text: "With other pkgs"
+      icon: "fa-circles-overlap"
+      menu:
+      - text: "AMR & dplyr/tidyverse"
+        icon: "fa-circles-overlap"
+        href: "articles/other_pkg.html"
+      - text: "AMR & data.table"
+        icon: "fa-circles-overlap"
+        href: "articles/other_pkg.html"
+      - text: "AMR & tidymodels"
+        icon: "fa-circles-overlap"
+        href: "articles/other_pkg.html"
+      - text: "AMR & base R"
+        icon: "fa-circles-overlap"
+        href: "articles/other_pkg.html"
     - text: "Manual"
       icon: "fa-book-open"
       href: "reference/index.html"
     - text: "Authors"
       icon: "fa-users"
       href: "authors.html"
+  right:
     - text: "Changelog"
       icon: "far fa-newspaper"
       href: "news/index.html"
-  right:
     - text: "Source Code"
       icon: "fab fa-github"
       href: "https://github.com/msberends/AMR"
diff --git a/man/ab_property.Rd b/man/ab_property.Rd
index 23c7525c..00a0822d 100644
--- a/man/ab_property.Rd
+++ b/man/ab_property.Rd
@@ -119,7 +119,7 @@ ab_atc_group1("AMX")
 ab_atc_group2("AMX")
 ab_url("AMX")
 
-# smart lowercase tranformation
+# smart lowercase transformation
 ab_name(x = c("AMC", "PLB"))
 ab_name(x = c("AMC", "PLB"), tolower = TRUE)
 
diff --git a/man/av_property.Rd b/man/av_property.Rd
index bce3e163..a644969d 100644
--- a/man/av_property.Rd
+++ b/man/av_property.Rd
@@ -92,7 +92,7 @@ av_tradenames("ACI")
 av_group("ACI")
 av_url("ACI")
 
-# smart lowercase tranformation
+# lowercase transformation
 av_name(x = c("ACI", "VALA"))
 av_name(x = c("ACI", "VALA"), tolower = TRUE)
 
diff --git a/vignettes/SPSS.Rmd b/vignettes/SPSS.Rmd.not
similarity index 99%
rename from vignettes/SPSS.Rmd
rename to vignettes/SPSS.Rmd.not
index f864bc08..dd51a0b4 100755
--- a/vignettes/SPSS.Rmd
+++ b/vignettes/SPSS.Rmd.not
@@ -101,13 +101,13 @@ To work with R, probably the best option is to use [RStudio](https://www.rstudio
 
 To import a data file, just click *Import Dataset* in the Environment tab:
     
-![](https://github.com/msberends/AMR/raw/main/docs/import1.png)
+![](https://msberends.github.io/AMR/import1.png)
 
 If additional packages are needed, RStudio will ask you if they should be installed on beforehand.
 
 In the the window that opens, you can define all options (parameters) that should be used for import and you're ready to go:
 
-![](https://github.com/msberends/AMR/raw/main/docs/import2.png)
+![](https://msberends.github.io/AMR/import2.png)
 
 If you want named variables to be imported as factors so it resembles SPSS more, use `as_factor()`.
 
diff --git a/vignettes/other_pkg.Rmd b/vignettes/other_pkg.Rmd
new file mode 100755
index 00000000..53b3fba4
--- /dev/null
+++ b/vignettes/other_pkg.Rmd
@@ -0,0 +1,25 @@
+---
+title: "Using AMR with other packages: AMR & dplyr/tidyverse"
+output: 
+  rmarkdown::html_vignette:
+    toc: true
+    toc_depth: 3
+vignette: >
+  %\VignetteIndexEntry{How to conduct AMR data analysis}
+  %\VignetteEncoding{UTF-8}
+  %\VignetteEngine{knitr::rmarkdown}
+editor_options: 
+  chunk_output_type: console
+---
+
+```{r setup, include = FALSE, results = 'markup'}
+knitr::opts_chunk$set(
+  warning = FALSE,
+  collapse = TRUE,
+  comment = "#>",
+  fig.width = 7.5,
+  fig.height = 5
+)
+```
+
+This page will be updated shortly, to give explicit examples of how to work ideally with the `AMR` package, for those who are used to working in `dplyr` or other tidyverse packages.