Related how?

Biota (Life)
Prokaryotes (Prokaryota)
Bacteria (Bacterium)
Negibacteria (Rjheekñndd)
Proteobacteria (Purple bacteria & relatives)
Alphaproteobacteria
Rickettsiales
Anaplasmataceae
Ehrlichia
Ehrlichia chaffeensis

Ehrlichia chaffeensis str. arkansas (21397996)