Answer:
Eosinophils
Explanation:
The exact role of eosinophils in your body isn't clear, but they're usually found attacking allergic diseases and certain infections
As the main illness before you have a fever will normally be sore throat ( if you are heaty ) and flu ( if you caught a cold ) .
Hence the Doctors need to start monitoring the sore throats more carefully to prevent the increase of rheumatic fever cases .
Hope this helps !! :)