A new tool could one day improve Lyme disease diagnosis

‘Fingerprint’ test distinguishes between two easily confused tick-borne illnesses

black-legged tick on the left, lone star tick on the right

TICK TIMES TWO It can be difficult to correctly diagnose tick-borne diseases in locales with both the black-legged tick (left), which spreads Lyme disease, and the lone star tick (right), which can transmit southern tick‒associated rash illness or STARI.

Scott Bauer/USDA; CDC

A new testing method can distinguish between early Lyme disease and a similar tick-borne illness, researchers report.