These infections are spread from contact
with other infected cats, and are especially rampant in areas where large groups of cats interact with each other.
Cats at highest risk are young kittens who are often infected by their mothers or by close contact
with other infected cats.
In most cases it is contracted
from other infected cats including being passed down from a mother whose kitten has not been vaccinated (or if the vaccination has not taken hold.
A highly contagious viral disease caused by the feline parvovirus, usually spread when cats come into contact with the blood, urine, fecal matter, nasal secretions, and even fleas
from other infected cats.
Outdoor cats and indoor / outdoor cats are at the highest risk of contracting the virus, which is spread through bite wounds and casual contact
with other infected cats.
Because of this, the vaccination is recommended for outdoor cats or cats who will have exposure to
other infected cats.
Other infected cats may slowly and progressively deteriorate, or experience recurrent illness mixed with periods of relative good health.