Coxsackievirus

Definitions & Key takeaways

Coxsackievirus is a single-stranded RNA virus belonging to the enterovirus genus and the picornaviridae family. It primarily affects the gastrointestinal tract and is mainly transmitted via the feco-oral route. Based on its pathogenicity, Coxsackievirus is divided into two groups: A and B. Coxsackievirus group A affects the skin and mucous membranes, causing hand-foot-mouth disease in children, and coxsackievirus group B, affects internal organs, resulting in more severe conditions such as gastroenteritis, pericarditis, myocarditis, and encephalitis.

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Coxsackievirus, sometimes referred to as Coxsackie virus is part of the enterovirus genus of the Picornavirus family named after Coxsackie village in New York.
The place where it was first isolated Coxsackie virus is surrounded by an icosahedral capsid, which is a spherical protein shell made up of 20 equilateral triangular faces.
Nonetheless, it's a naked virus because the capsid isn't covered by a lipid membrane. It's also a positive sense single strand virus.
This means that its RNA is actually Mrna and the host cell ribosomes use this Mrna to make one long polyprotein chain which is then broken into smaller pieces by viral proteases.
This all happens in the cytoplasm of the host cell since that's where the ribosomes are found and results in several viral proteins.
Coxsackie virus is primarily transmitted from person to person via the fecal oral route. In other words, you catch it by ingesting stool particles of someone who is sick.
Yuck. This can happen if infected stool ends up in the water supply or on agricultural fields.
If flies land on it and transfer stool particles to other places or by touching contaminated surfaces, you can summarize it as the four FS fluid fields, flies and fingers.
As a result, coxsackie virus can end up in food and drinking water. It can also be spread by respiratory droplets.
When someone sneezes or coughs after it enters the body, the virus first replicates in cells of the pharynx and terminal ileum from there, the virus enters blood vessels and travels to lymphatic tissue throughout the body.
This initial viral presence in the blood is called minor viremia because its a relatively small amount of virus. All right, Coxsackievirus counts over two dozen serotypes, but they can be grouped in only two groups A and B based on their pathophysiology, starting with group A.
It most commonly affects Children under five years and it generally prefers infecting the skin and mucous membranes. The most known serotype of this group is a 16 known to cause the hand foot mouth disease called.
So because it causes tiny blisters on those body parts. Other concerning serotypes include a 25 that causes hemorrhagic conjunctivitis and A seven that causes polio like permanent paralysis.
So it's rare on the flip side. Group B prefers going deeper into the body infecting visceral organs and causing problems like gastroenteritis if it affects the gut pericarditis.
In case it infects the pericardium, which is that tough membrane that envelops the heart or even causing myocarditis, which happens when it infects the heart muscle, resulting in coxsackie virus induced cardiomyopathy.
Sometimes it travels through the bloodstream and gets into the brain where it can cause encephalitis when it causes inflammation of brain tissue or result in aseptic meningitis.
When there is meningeal inflammation. People with a coxsackie virus infection present symptoms depending on the infecting coxsackie group.
If it's group, a people present with symptoms of hand foot mouth disease that includes painful oval shaped blisters on the fingers and palms of the hands and soles of the feet.
These blisters may also be present in the mouth, throat and tonsils in the condition known as herpangina. In the case of hemorrhagic conjunctivitis, people present with itchy, swollen eyes appearing red due to subconjunctival bleeding.
When the infection is due to a group B coxsackie virus. It typically causes systemic signs and symptoms including fever, headache and extreme fatigue.
Other symptoms may vary depending on the affected organs such as chest pain in case of pericarditis or myocarditis and diarrhea and vomiting.
In case of acute gastroenteritis. If it progresses to aseptic meningitis, it typically causes a headache, neck rigidity and pain.
The diagnosis of Coxsackie virus infection is mainly based on symptoms. Laboratory investigations are reserved for severe cases in the lab.
The virus can be identified by using reverse transcriptase polymerase chain reaction or just RT PCR, which is a method that consists of identifying its RNA and body fluids or even having viral cultures in viable cells.
But this is not routinely done. The treatment of a Coxsackie virus infection consists of supportive management like keeping people hydrated when there are minor symptoms in severe cases like meningitis and myocarditis.
Intravenous immunoglobulin or IVIG is usually given all right as a quick recap. Coxsackievirus is a positive sense, single stranded RNA virus that belongs to the enterovirus genus.
It is transmitted from person to person mainly via the fecal oral route. Coxsackie virus is divided into two groups A and B based on its pathophysiological mechanisms group A tends to affect the skin and mucous membranes, mainly in Children under five years causing hand foot mouth disease, hemorrhagic conjunctivitis and rarely polio like permanent paralysis.
On the other hand, group B tends to infect visceral organs resulting in more severe conditions like gastroenteritis, pericarditis, myocarditis, and even encephalitis and aseptic meningitis.
When the virus gets into the brain, the diagnosis is basically clinical but in some cases, reverse transcriptase polymerase chain reaction is used to identify the germs RN in the samples.
When there are minor symptoms. The management is mainly supportive, making sure that people are well hydrated.
While the use of intravenous immunoglobulin is reserved for severe cases like meningitis and myocarditis.