The presence of cat fleas can severely affect your pet’s quality of life, particularly if they have a severe flea allergy. There are however other clinical affects beyond skin irritation. In young, old or debilitated cats a heavy infestation of fleas can cause anaemia.
Fleas also carry the larvae of tapeworm D. caninum which is ingested during grooming, presence of this tapeworm is a strong indicator or a current or recent flea infestation.
Fleas spread bacteria Bartonella henselae, the bacteria that causes cat scratch fever, between cats. This bacterium can cause disease to humans, particularly children and those with a weak immune system. Consistent flea treatment is the best way to avoid cat-scratch fever.