[Calicivirus]

Area of Science:

• Virology
• Microbiology
• Immunology

Context:

• Caliciviruses, such as norovirus and sapovirus, are significant pathogens affecting both humans and animals.
• These viruses exhibit environmental stability and can be transmitted through contaminated food and water.
• Caliciviruses are known for their genetic diversity, with frequent intragenomic mutation and recombination events.

Purpose:

• To provide an overview of caliciviruses, encompassing their diverse hosts and clinical manifestations.
• To highlight the challenges in studying caliciviruses due to difficulties in culturing human strains.
• To discuss diagnostic methods, host-pathogen interactions, and the role of animal models in calicivirus research.

Summary:

• Caliciviruses cause a range of symptoms, from gastroenteritis to skin diseases, and can also lead to inapparent infections.
• Genetic recombination is a common feature, contributing to the emergence and rapid spread of new strains.
• Diagnosis relies on molecular analysis, immunoassays, and immunochromatography, while histo-blood group antigens (HBGAs) serve as key cellular receptors.

Impact:

• Understanding calicivirus diversity and transmission is crucial for public health and disease control.
• Limited culturability of human noroviruses and sapoviruses hinders detailed pathogenesis and immunological studies.
• The development of animal models is essential for advancing research on pathobiology, treatment, and vaccine development for caliciviruses.