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The Calicivirus is a small, non enveloped capsid, approximately 35 to 60 nanometers in diameter. It appears approximately hexagonal or spherical in shape physically, and is chemically icosahedral. Also, the Calicivirus is based on a positive sense, single strand, non segmented genome.

Transmission of this particular virus is usually dependent on fecal contamination of an oral route within the body, however, can sometimes occur via respiratory moisture.

In human, the Calicivirus can cause acute inflammation of the stomach and intestines (gastroenteritis) after an onset of about 2 days, usually lasting for approximately 3 days. Hospitalization is not strictly necessary with a calicivirus infection, but can be facilitated for the purposes of rehydration therapy.

Interestingly enough, this virus has been used for the purposes of population control in rabbits throughout Australia and even New Zealand.

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