A23 virus

The A23 virus is a viral serotype classified as a part of Enterovirus B species of in the genus Enterovirus. Originally thought to be a coxsackie A virus, it is antigenetically identical to echovirus 9. which means the human body responds to both viruses in the same way

It is a deletion mutant virus, which alters the reading frame of the body's mRNA. This is especially dangerous, because the entire sequence of amino acids produced will be altered, which may lead to unstable or inactive protein production.

This virus has been associated with Aseptic meningitis, Viral meningitis, diarrhea, and respiratory diseases. Its transmission is facilitated by crowded conditions. Those who are slightly ill and children are at particular risk of contracting echovirus 9 (A23).