Seems right. I noticed that each region takes about 3 months or so to get through their outbreak.
1. New York / New Jersey / Mid Atlantic (March - June)
2. Sunbelt (June - September)
3. Southwestern United States (California / Arizona) - July - October
4. Now the midwest (Late September/Early October - present)
Yes the Israel Institution of Technology demonstrated an invariable 85 day cycle. It fits the profile.