Asymptomatic Candidatus Neoehrlichia mikurensis Infections in Immunocompetent Humans

In Europe, human infections with Candidatus Neoehrlichia mikurensis have mainly been restricted to immunocompromised patients. We report here the first cases of asymptomatic Ca. Neoehrlichia mikurensis infection in immunocompetent humans (5/316 [1.6%] were infected). Due to the potential threats of infections with Ca. Neoehrlichia mikurensis in healthy persons to the safety of the blood supply, further study of this phenomenon is required.