I have used GeoJSONDataSource (converted from a geopandas) to display ALL the world map in my bokeh figure.
geosourceword = GeoJSONDataSource(geojson = json_data)
standardfig.patches('xs','ys', source = geosourceword,fill_color = {'field':'deaths', transform':color_mapper})
Then I use
hover_tool = HoverTool(tooltips = [ ('location', '@location'), ('# of deaths', '@deaths')])
to display over a location the number of deaths. Since, in my data, some country have deaths = NaN I don't want to display them (for instance in this picture I don't want to display Turkey). Any idea how I can proceed ?