The 2017 CDC number for Lyme Disease is the largest ever reported total.  Considering the disease is underreported by a factor of 10,that means 427,430 cases occurred in the US in 2017.  (It not more)

**A disclaimer has been made on the map concerning MA. MA has changed its reporting so that it relies primarily on lab reports.  This is problematic since most of its numbers go unreported.  A similar disclaimer should be made for NY.**

CDC Results show a record number of tick-borne diseases.

 

Reported Tick-borne Diseases, U.S.          2016                    2017

Lyme Disease (confirmed & probable)          36,429                 42,749

Anaplasmosis/Ehrlichiosis                               5,750                   7,718

Spotted Fever Rickettsiosis                             4,269                   6,248

Babesiosis                                                        1,910                   2,368

Tularemia                                                             230                     239

Powassan Virus                                                     22                       33

Total                                                                48,610                59,349

 

Top 10 States for Reported Lyme Disease Cases

(Confirmed and probable)

  1. PA     11,900
  2. NY      5,155
  3. NJ       5,092
  4. WI       3,000
  5. MN      2,318
  6. CT       2,051
  7. MD      1,891
  8. ME      1,850
  9. VA       1,657
  10. NH      1,381

Top 10 Age Groups for Reported Lyme Disease Cases

(Confirmed and probable)

  1. 60-64     3,836
  2. 55-50     3,717
  3. 5-9         3,536
  4. 65-69     3,479
  5. 50-54     3,119
  6. 10-14     2,953
  7. 40-44     2,886
  8. 70-74     2,594
  9. 45-49     2,447
  10. 15-19     2,098

CDC Links to data:
(case count summary) https://www.cdc.gov/ticks/data-summary/index.html
(state data) https://www.cdc.gov/lyme/datasurveillance/maps-recent.html
(charts and figures) https://www.cdc.gov/lyme/datasurveillance/charts-figures-recent.html