Americans have excellent pollen.com website, which not only shows allergy information for the local area, but also flu info.
UK has similar flu info website: https://flusurvey.org.uk/ unfortunately it’s not supported by HA.
I have several in the pipeline but happy to advise!
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@anon43302295 from what I can see there is no REST api with which to make a component. Your best bet is to try extract an https://www.home-assistant.io/components/panel_iframe/
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