Changes

The mode of transmission of Mhf is poorly understood and several possibilities have been investigated:

The mode of transmission of Mhf is poorly understood. Several possibilities have been proposed but none have been able to be reliably demonstrated. These include:

# Biting and fighting activities, although this has not been able to be demonstrated experimentally.  

# Biting and fighting activities. Infection by this route has not been able to be demonstrated experimentally.  

#Fleas have been suggested as a vector for Mhf

#Fleas. The fact that Mhf infection can be prevalent in areas where fleas are uncommon makes this less likely<ref name="Jensen"> Jensen WA, Lappin MR, Kamkar S et al (2001) Use of a polymerase chain reaction assay to detect and differentiate two strains of ''Haemobartonella felis'' in naturally infected cats. '''Am J Vet Res''' 62(4):604-8 </ref>

#Arthropods. Geographic variation in rates of Mhf infection does exist and could be due to transmission by an arthropod <ref name="Willi">Willi B, Boretti FS, Baumgartner C et al (2006) Prevalence, risk factor analysis and follow-up of infections caused by three feline haemoplasma species in Switzerland. '''J Clin Microbiol''' 44(3):961-9</ref>.