We found serologic evidence of spotted fever group Rickettsia in humans and dogs and typhus group Rickettsia in dogs in Reynosa, Mexico. Our investigation revealed serologic samples reactive to spotted fever group Rickettsia in 5 community members, which highlights a potential rickettsial transmission scenario in this region.
Keywords: Mexico; Rickettsia; bacteria; canine; dogs; rickettsiae; spotted fever; typhus; zoonoses.