diff --git a/serohub1.mjs b/serohub1.mjs
new file mode 100644
index 0000000..d6ef54d
--- /dev/null
+++ b/serohub1.mjs
@@ -0,0 +1,39 @@
+const Plotly = (await import("https://esm.sh/plotly.js@2.34.0")).default
+//const Plotly = (await import("https://episphere.github.io/plotly/esm.mjs")).esm
+const localForage = (await import('https://esm.run/localforage@1.9.0/src/localforage.js')).default
+const url = 'https://episphere.github.io/serohub/seroprevalence.json.zip'
+let seroHub={
+    loadedAt:Date(),
+    loadedFrom:url
+}
+let dt = await localForage.getItem('seroHub_Prevalence')
+//if(true){
+if(!dt){
+    const loadZip = (await import('https://episphere.github.io/serohub/loadZip.mjs'))
+    dt = await loadZip.loadZippedFiles(url)
+    localForage.setItem('seroHub_Prevalence',dt)
+}
+seroHub.seroprevalence=dt['seroprevalence.json']
+// transpose
+seroHub.variables = Object.keys(seroHub.seroprevalence.seroprevalences[0])
+seroHub.values=function(variable='age'){
+    if(typeof(variable)=='number'){
+        variable = seroHub.variables[variable]
+    }
+    console.log(`reading variable "${variable}"`)
+    return seroHub.seroprevalence.seroprevalences.map(row=>row[variable])
+}
+seroHub.uniqueValues=function(variable='age'){
+    if(typeof(variable)=='number'){
+        variable = seroHub.variables[variable]
+    }
+    console.log(`unique values for "${variable}"`)
+    return [... new Set(seroHub.seroprevalence.seroprevalences.map(row=>row[variable]))]
+}
+// Plots
+
+
+
+export{
+    seroHub
+}
\ No newline at end of file
diff --git a/serohub2.mjs b/serohub2.mjs
new file mode 100644
index 0000000..539abef
--- /dev/null
+++ b/serohub2.mjs
@@ -0,0 +1,39 @@
+//const Plotly = (await import("https://esm.sh/plotly.js@2.34.0")).default
+const Plotly = (await import("https://episphere.github.io/plotly/esm.mjs")).esm
+const localForage = (await import('https://esm.run/localforage@1.9.0/src/localforage.js')).default
+const url = 'https://episphere.github.io/serohub/seroprevalence.json.zip'
+let seroHub={
+    loadedAt:Date(),
+    loadedFrom:url
+}
+let dt = await localForage.getItem('seroHub_Prevalence')
+//if(true){
+if(!dt){
+    const loadZip = (await import('https://episphere.github.io/serohub/loadZip.mjs'))
+    dt = await loadZip.loadZippedFiles(url)
+    localForage.setItem('seroHub_Prevalence',dt)
+}
+seroHub.seroprevalence=dt['seroprevalence.json']
+// transpose
+seroHub.variables = Object.keys(seroHub.seroprevalence.seroprevalences[0])
+seroHub.values=function(variable='age'){
+    if(typeof(variable)=='number'){
+        variable = seroHub.variables[variable]
+    }
+    console.log(`reading variable "${variable}"`)
+    return seroHub.seroprevalence.seroprevalences.map(row=>row[variable])
+}
+seroHub.uniqueValues=function(variable='age'){
+    if(typeof(variable)=='number'){
+        variable = seroHub.variables[variable]
+    }
+    console.log(`unique values for "${variable}"`)
+    return [... new Set(seroHub.seroprevalence.seroprevalences.map(row=>row[variable]))]
+}
+// Plots
+
+
+
+export{
+    seroHub
+}
\ No newline at end of file