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Coxsackieviruses are divided into group A and group B viruses based on early observations of their pathogenicity in neonatal mice. [1] Group A coxsackieviruses were noted to cause a flaccid paralysis (which was caused by generalized myositis) while group B coxsackieviruses were noted to cause a spastic paralysis (due to focal muscle injury and degeneration of neuronal tissue).
Coxsackie B infections usually do not cause serious disease, although for newborns in the first 1–2 weeks of life, Coxsackie B infections can easily be fatal. [2] The pancreas is a frequent target, which can cause pancreatitis. [2] Coxsackie B3 (CB3) infections are the most common enterovirus cause of myocarditis and sudden cardiac death. [8]
Usually, herpangina is produced by one particular strain of coxsackie virus A (and the term "herpangina virus" refers to coxsackievirus A), [1] but it can also be caused by coxsackievirus B or echoviruses. [2] Most cases of herpangina occur in the summer, [3] affecting mostly children. However, it occasionally occurs in adolescents and adults.
“Some viruses, like coxsackie (hand, foot, and mouth disease), can affect the uvula and cause mild areas of ulceration and swelling,” says Dr. Zalvan.
Coxsackie A virus is a subgroup of enterovirus A, which are small, non-enveloped, positive-sense, single-stranded RNA viruses. Its protective, icosahedral capsid has an external portion that contains sixty copies of viral proteins (VP1,-2,-3) and an internal portion surrounding the RNA genome containing sixty copies of VP4 viral proteins.
The rash is accompanied by a fever, headache, stomachache, and fatigue, and can be very dangerous to those unvaccinated, adds Dr. Ansell. rbkomar - Getty Images Contact Dermatitis
Coxsackievirus group A is known for causing hand-foot-and-mouth diseases while Group B, which contains six serotypes, can cause a varying range of symptoms like gastrointestinal distress myocarditis. Coxsackievirus B4 has a cell tropism for natural killer cells and pancreatic islet cells.
Coxsackievirus A16 is the most common cause, and enterovirus 71 is the second-most common cause. [6] Other strains of coxsackievirus and enterovirus can also be responsible. [6] [12] Some people may carry and pass on the virus despite having no symptoms of disease. [10] Other animals are not involved. [8] Diagnosis can often be made based on ...