Borrelia miyamotoi Infection in Immunocompromised Man, California, USA, 2021

Abstract

Infection with Borrelia miyamotoi in California, USA, has been suggested by serologic studies. We diagnosed B. miyamotoi infection in an immunocompromised man in California. Diagnosis was aided by plasma microbial cell–free DNA sequencing. We conclude that the infection was acquired in California.

Keywords

• Borrelia miyamotoi
• tick-borne diseases
• microbial cell-free DNA sequencing
• immunocompromised host
• relapsing tick-borne fever
• Ixodes pacificus