Norwalk Virus will show "red" in cytoplasm. In lab study several other virus samples produced similar results. Maintain immunity of particular strain after symptoms subside red still visible during that time.
Typically low numbers of eosinophils observed in conditions such as allergies, asthma and GERD. parasites typically produce larger numbers. Have you tried whole body purification and/or blood purification. Have recipes if interested. Hang in there. Bugbaggers