''Enterovirus'' is a genus of positive-sense single-stranded

RNA virus An RNA virus is a virusother than a retrovirusthat has ribonucleic acid (RNA) as its genetic material. The nucleic acid is usually single-stranded RNA ( ssRNA) but it may be double-stranded (dsRNA). Notable human diseases caused by RNA viruses ...

es associated with several human and mammalian diseases. Enteroviruses are named by their transmission-route through the intestine ('enteric' meaning intestinal). Serologic studies have distinguished 71 human enterovirus

serotype A serotype or serovar is a distinct variation within a species of bacteria or virus or among immune cells of different individuals. These microorganisms, viruses, or cells are classified together based on their surface antigens, allowing the epi ...

s on the basis of antibody neutralization tests. Additional antigenic variants have been defined within several of the serotypes on the basis of reduced or nonreciprocal cross-neutralization between variant strains. On the basis of their pathogenesis in humans and animals, the enteroviruses were originally classified into four groups, polioviruses, Coxsackie A viruses (CA), Coxsackie B viruses (CB), and

echovirus Echovirus is a polyphyletic group of viruses associated with enteric disease in humans. The name is derived from "enteric cytopathic human orphan virus". These viruses were originally not associated with disease, but many have since been identifie ...

es, but it was quickly realized that there were significant overlaps in the biological properties of viruses in the different groups. Enteroviruses isolated more recently are named with a system of consecutive numbers: EV-D68, EV-B69, EV-D70, EV-A71, etc., where genotyping is based on the VP1 capsid region. Enteroviruses affect millions of people worldwide each year and are often found in the respiratory secretions (e.g., saliva, sputum, or nasal mucus) and stool of an infected person. Historically,

poliomyelitis Poliomyelitis, commonly shortened to polio, is an infectious disease caused by the poliovirus. Approximately 70% of cases are asymptomatic; mild symptoms which can occur include sore throat and fever; in a proportion of cases more severe sym ...

was the most significant disease caused by an enterovirus, namely poliovirus. There are 81 non-polio and 3 polio enteroviruses that can cause disease in humans. Of the 81 non-polio types, there are 22 Coxsackie A viruses, 6 Coxsackie B viruses, 28 echoviruses, and 25 other enteroviruses. Poliovirus, as well as coxsackie and echovirus, is spread through the

fecal–oral route The fecal–oral route (also called the oral–fecal route or orofecal route) describes a particular route of transmission of a disease wherein pathogens in fecal particles pass from one person to the mouth of another person. Main causes of fecal ...

. Infection can result in a wide variety of symptoms, including those of: mild respiratory illness ( the common cold), hand, foot and mouth disease, acute hemorrhagic conjunctivitis, aseptic meningitis,

myocarditis Myocarditis, also known as inflammatory cardiomyopathy, is an acquired cardiomyopathy due to inflammation of the heart muscle. Symptoms can include shortness of breath, chest pain, decreased ability to exercise, and an irregular heartbeat. The ...

, severe neonatal sepsis-like disease, acute flaccid paralysis, and the related acute flaccid myelitis.

Virology

Enteroviruses are members of the picornavirus family, a large and diverse group of small

RNA viruses ''Orthornavirae'' is a kingdom of viruses that have genomes made of ribonucleic acid (RNA), those genomes encoding an RNA-dependent RNA polymerase (RdRp). The RdRp is used to transcribe the viral RNA genome into messenger RNA (mRNA) and to repli ...

characterized by a single positive-strand genomic RNA. All enteroviruses contain a genome of approximately 7,500 bases and are known to have a high mutation rate due to low-fidelity replication and frequent recombination. After infection of the host cell, the genome is translated in a cap-independent manner into a single polyprotein, which is subsequently processed by virus-encoded proteases into the structural capsid proteins and the nonstructural proteins, which are mainly involved in the replication of the virus.

RNA Ribonucleic acid (RNA) is a polymeric molecule essential in various biological roles in coding, decoding, regulation and expression of genes. RNA and deoxyribonucleic acid ( DNA) are nucleic acids. Along with lipids, proteins, and carbohydra ...

recombination appears to be a major driving force in the evolution of enteroviruses as well as in the shaping of their genetic architecture.Muslin C, Mac Kain A, Bessaud M, Blondel B, Delpeyroux F. Recombination in Enteroviruses, a Multi-Step Modular Evolutionary Process. Viruses. 2019 Sep 14;11(9):859. doi: 10.3390/v11090859. PMID 31540135 Review. The mechanism of recombination of the RNA genome likely involves template strand switching during RNA replication, a process known as copy choice recombination. RNA recombination is considered to be an adaptation for dealing with RNA genome damage and a source of

genetic diversity Genetic diversity is the total number of genetic characteristics in the genetic makeup of a species, it ranges widely from the number of species to differences within species and can be attributed to the span of survival for a species. It is dis ...

. It is also a source of concern for vaccination strategies, because live attenuated/mutated strains used for vaccination could potentially recombine with wild-type related strains, as has been the case with circulating vaccine derived polio viruses (cVDPDs). The capsid region and especially VP1 is a recombination coldspot, and this is one of the main reasons to use this region for genotyping. However, the 5'UTR - capsid junction and the beginning of the P2 region have been observed to recombine very frequently, although recombinations do occur in the rest of the genome as well. Interestingly, the enterovirus species EV-A, EV-B, EV-C, EV-D have not been observed so far to exchange genomic regions among them, with the exception of the 5'UTR.

Member viruses

Enterovirus A - L

Enteroviruses are a group of ubiquitous viruses that cause a number of infections which are usually mild. The genus picornavirus includes enteroviruses and rhinoviruses. Enterovirus A include coxsackievirus A2, A3, A4, A5, A6, A7, A8, A10, A12, A14, A16 and enterovirus A71, A76 A89, A89, A90, A91, A92, A144, A119, A120, A121, A122 (simian virus 19), A123 (simian virus 43), A124 (simian virus 46), A125 (baboon enterovirus A13). Some viruses initially reported as novel have been found to be misidentified. Thus, coxsackievirus A23 is the same serotype as echovirus 9, and coxsackievirus A15 is the same serotype as coxsackievirus A11 and coxsackievirus A18 is the same serotype as coxsackievirus A13. Viruses-11-00460-g002

Coxsackie A16 virus causes human hand, foot and mouth disease. Enterovirus B includes coxsackievirus B1,2,3,4,5,6; coxsackievirus A9; echovirus 1-33 and enterovirus B69-113. Coxsackie B viruses are found worldwide and can cause

(inflammation of the heart);

pericarditis Pericarditis is inflammation of the pericardium, the fibrous sac surrounding the heart. Symptoms typically include sudden onset of sharp chest pain, which may also be felt in the shoulders, neck, or back. The pain is typically less severe when sit ...

(inflammation of the sac surrounding the heart);

meningitis Meningitis is acute or chronic inflammation of the protective membranes covering the brain and spinal cord, collectively called the meninges. The most common symptoms are fever, headache, and neck stiffness. Other symptoms include confusion or ...

(inflammation of the membranes that line the brain and spinal cord); and pancreatitis (inflammation of the pancreas). The Coxsackie B viruses are also reported to cause a spastic paralysis due to the degeneration of neuronal tissue and muscle injury. Infections usually occur during warm summer months with symptoms including exanthema, pleurodynia, flu-like illness consisting of fever, fatigue, malaise, myalgia, nausea, abdominal pain and vomiting.

Echovirus Echovirus is a polyphyletic group of viruses associated with enteric disease in humans. The name is derived from "enteric cytopathic human orphan virus". These viruses were originally not associated with disease, but many have since been identifie ...

es are a cause of many of the nonspecific viral infections that can range from minor illness to severe, potentially fatal conditions such as aseptic meningitis, encephalitis, paralysis and myocarditis. It is mainly found in the intestine, and can cause nervous disorders. Type B enteroviruses are responsible for a vast number of mild and acute infections. They have been reported to remain in the body causing persistent infections contributing to chronic diseases such as type I diabetes. Enterovirus C consists of polioviruses 1,2 and 3; coxsackieviruses A1, A11, A13, A18, A17, 20, A21, A22, A24 and enterovirus C95, C96, C99, C102, C104, C105, C109, C113, C118. The three serotypes of poliovirus, PV-1, PV-2, and PV-3 each have a slightly different capsid protein. Capsid proteins define cellular receptor specificity and virus antigenicity. PV-1 is the most common type to cause infection in humans; however, all three forms are extremely contagious spreading through person-to-person contact. Poliovirus causes Polio, or Poliomyelitis, which is a disabling and life-threatening disease that causes paresthesia, meningitis and permanent paralysis. Symptoms can include sore throat, fever, tiredness, nausea, headache and stomach pain although 72% of those that get infected will not display visible symptoms. There are two types of vaccines available to prevent polio: inactivated poliovirus vaccine given as an injection in the leg (IPV) or arm and oral poliovirus vaccine (OPV). The polio vaccine is highly efficacious giving protection to 99 out of 100 children vaccinated.

Non-cytolytic (non-cytopathic) enterovirus

Enteroviruses is capable of producing acute infections that are rapidly cleared by the adaptive immune response. However genome mutations, which enterovirus B serotypes may acquire in the host during the acute phase, may transform these viruses into the non-cytolytic form (also known as non-cytopathic or defective enterovirus). This is a mutated quasispecies of enterovirus, which can cause persistent infection in human cardiac tissues especially in some patients with myocarditis or dilated cardiomyopathy. In persistent infections viral RNA is present only on very low levels and is not believed to contribute to any ongoing myocardial disease being a fading remnant of a recent acute infection although some scientists think otherwise.

Enterovirus D68

EV-D68 first was identified in California in 1962. Compared with other enteroviruses, it has been rarely reported in the U.S. in the past 40 years. Most people who get infected are infants, children, and teens. EV-D68 usually causes mild to severe respiratory illness; however, the full spectrum of EV-D68 illness is not well-defined. Most start with common cold symptoms of runny nose and cough. Some, but not all, may also have fever. For more severe cases, difficulty breathing, wheezing or problems catching your breath may occur. As of October 4, 2014, there has been one death in New Jersey directly linked to EV-D68, as well as one death in Rhode Island attributed to a combination of EV-D68 and sepsis caused by an infection of staphylococcus aureus.

Enterovirus A71

Enterovirus A71 (EV-A71) is notable as one of the major causative agents for hand, foot and mouth disease (HFMD), and is sometimes associated with severe central nervous system diseases. EV-A71 was first isolated and characterized from cases of neurological disease in California in 1969. To date, little is known about the molecular mechanisms of host response to EV-A71 infection, but increases in the level of mRNAs encoding chemokines, proteins involved in protein degradation, complement proteins, and proapoptotis proteins have been implicated.

Poliovirus

There are three

s of poliovirus, ''PV-1'', ''PV-2'', and ''PV-3''; each with a slightly different capsid protein. Capsid proteins define cellular receptor specificity and virus antigenicity. ''PV-1'' is the most common form encountered in nature; however, all three forms are extremely infectious. Poliovirus can affect the spinal cord and cause

. ''Polioviruses'' were formerly classified as a species belonging to the genus Enterovirus in the family Picornaviridae. The Poliovirus species has been eliminated from the genus Enterovirus. The following serotypes, Human poliovirus 1, Human poliovirus 2, and Human poliovirus 3, were assigned to the species Human enterovirus C, in the genus Enterovirus in the family Picornaviridae. The type species of the genus Enterovirus was changed from Poliovirus to Human enterovirus C. This has been ratified in April 2008. The 39th Executive Committee (EC39) of the International Committee on Taxonomy of Viruses (ICTV) met in Canada during June 2007 with new taxonomic proposals. Two of the proposals with three changes were: * Code 2005.261V.04: To remove the following species Poliovirus from the existing genus Enterovirus in the family Picornaviridae. * Code 2005.262V.04: To assign the viruses; PV-1, PV-2, PV-3 to the existing species Human enterovirus C in the genus Enterovirus in the family Picornaviridae. * Code 2005.263V.04: To change the type species Poliovirus from the existing genus Enterovirus in the family Picornaviridae to the type species Human enterovirus C. Proposals approved at the (EC39) meeting of 2007, were sent to members of ICTV via email for ratification and have become official taxonomy. There have been a total of 215 taxonomic proposals, which have been approved and ratified since the 8th ICTV Report of 2005. The ratification process was performed by email. The proposals were sent electronically via email on March 18, 2008, to ICTV members with a request to vote on whether to ratify the taxonomic proposals, with a 1-month deadline. The following are two of the taxonomic proposals with three changes that were ratified by ICTV members in April 2008: Picornaviruses * 2005.261V.04: To remove the following species from the existing genus Enterovirus in the family Picornaviridae: Poliovirus. (Note: Poliovirus hereby loses its status as a virus species.) * 2005.262V.04: To assign the following viruses to the species Human enterovirus C in the existing genus Enterovirus in the family Picornaviridae: Human poliovirus 1, Human poliovirus 2, Human poliovirus 3. (This is not strictly necessary as a taxonomic proposal because it concerns entities below the species level, but it is left in to clarify this reorganization of the Picornaviridae.) * 2005.263V.04: To change the type species of the genus Enterovirus in the family Picornaviridae, from Poliovirus to Human enterovirus C.

Diseases caused by enterovirus infection

Enteroviruses cause a wide range of symptoms, and while their long list of signs and symptoms should put them on the differential diagnosis list of many illnesses, they often go unnoticed. Enteroviruses can cause anything from rashes in small children, to summer colds, to encephalitis, to blurred vision, to

. Enteroviral infections have a great range in presentation and seriousness. Non polio enteroviruses cause 10–15 million infections and tens of thousands of hospitalizations in the US each year. Enteroviruses can be identified through cell culture or PCR assay, collected from fecal or respiratory specimens. Below are common enterovirus related diseases, including poliomyelitis. *

Poliomyelitis Poliomyelitis, commonly shortened to polio, is an infectious disease caused by the poliovirus. Approximately 70% of cases are asymptomatic; mild symptoms which can occur include sore throat and fever; in a proportion of cases more severe sym ...

primarily via the fecal-oral route *

Polio-like syndrome Polio-like syndrome is a general description of a group of symptoms which mimic polio, including rarely permanent paralysis. Various triggers have been found, including some viruses from the same virus group as polio: enterovirus 68, enterovirus 7 ...

found in children who tested positive for enterovirus 68. * Nonspecific febrile illness is the most common presentation of enterovirus infection. Other than fever, symptoms include muscle pain, sore throat, gastrointestinal distress/abdominal discomfort, and headache. In newborns the picture may be that of sepsis, however, and can be severe and life-threatening. * Enteroviruses are by far the most common causes of aseptic meningitis in children. In the United States, enteroviruses are responsible for 30,000 to 50,000 meningitis hospitalizations per year as a result of 10–15 million infections. * Bornholm disease or epidemic pleurodynia is characterized by severe paroxysmal pain in the chest and abdomen, along with fever, and sometimes nausea, headache, and emesis. *

Pericarditis Pericarditis is inflammation of the pericardium, the fibrous sac surrounding the heart. Symptoms typically include sudden onset of sharp chest pain, which may also be felt in the shoulders, neck, or back. The pain is typically less severe when sit ...

and/or

are typically caused by enteroviruses; symptoms consist of fever with dyspnea and

chest pain Chest pain is pain or discomfort in the chest, typically the front of the chest. It may be described as sharp, dull, pressure, heaviness or squeezing. Associated symptoms may include pain in the shoulder, arm, upper abdomen, or jaw, along with n ...

. Arrhythmias, heart failure, and myocardial infarction have also been reported. * Acute hemorrhagic conjunctivitis can be caused by enteroviruses. * Herpangina is caused by Coxsackie A virus, and causes a vesicular rash in the oral cavity and on the pharynx, along with high fever, sore throat,

malaise As a medical term, malaise is a feeling of general discomfort, uneasiness or lack of wellbeing and often the first sign of an infection or other disease. The word has existed in French since at least the 12th century. The term is often used ...

, and often dysphagia, loss of appetite, back pain, and headache. It is also self-limiting, with symptoms typically ending in 3–4 days. * Hand, foot and mouth disease is a childhood illness most commonly caused by infection by Coxsackie A virus or EV71. *

Encephalitis Encephalitis is inflammation of the brain. The severity can be variable with symptoms including reduction or alteration in consciousness, headache, fever, confusion, a stiff neck, and vomiting. Complications may include seizures, hallucinations, ...

is rare manifestation of enterovirus infection; when it occurs, the most frequent enterovirus found to be causing it is

echovirus 9 Echovirus is a Polyphyly, polyphyletic group of viruses associated with enteric disease in humans. The name is derived from "enteric cytopathic human orphan virus". These viruses were originally not associated with disease, but many have since bee ...

. *

Myocarditis Myocarditis, also known as inflammatory cardiomyopathy, is an acquired cardiomyopathy due to inflammation of the heart muscle. Symptoms can include shortness of breath, chest pain, decreased ability to exercise, and an irregular heartbeat. The ...

is characterized by inflammation of the myocardium (cardiac muscle cells). Over the last couple of decades, numerous culprits have been identified as playing a role in myocarditis pathogenesis in addition to the enterovirus, which at first was the most commonly implicated virus in this pathology. One of the most common enteroviruses found to be responsible for causing Myocarditis is the Coxsackie B3 virus. * A 2007 study suggested that acute respiratory or gastrointestinal infections associated with enterovirus may be a factor in myalgic encephalomyelitis.

Suspected diseases

Encephalitis lethargica Encephalitis lethargica is an atypical form of encephalitis. Also known as "sleeping sickness" or "sleepy sickness" (distinct from tsetse fly-transmitted sleeping sickness), it was first described in 1917 by neurologist Constantin von Economo a ...

, the 1917–1926 "sleeping sickness".

Possible correlations being studied

Enterovirus has been speculated to be connected with Type 1 diabetes. It has been proposed that type 1 diabetes is a virus-triggered autoimmune response in which the immune system attacks virus-infected cells along with the insulin-producing beta cells in the pancreas. A team working at University of Tampere, Finland identified the enterovirus Coxsackievirus B1 as possibly linked to type 1 diabetes (which is an autoimmune disease).

Symptoms

Most people who contract enterovirus have mild symptoms lasting about a week. Those with higher risk may have more complications, sometimes becoming fatal. The most common sign of enterovirus is a

common cold The common cold or the cold is a viral infectious disease of the upper respiratory tract that primarily affects the respiratory mucosa of the nose, throat, sinuses, and larynx. Signs and symptoms may appear fewer than two days after exposu ...

. More intense symptoms of enterovirus include

hypoxia Hypoxia means a lower than normal level of oxygen, and may refer to: Reduced or insufficient oxygen * Hypoxia (environmental), abnormally low oxygen content of the specific environment * Hypoxia (medical), abnormally low level of oxygen in the tis ...

, aseptic meningitis, conjunctivitis, hand, foot and mouth disease, and

paralysis Paralysis (also known as plegia) is a loss of motor function in one or more muscles. Paralysis can also be accompanied by a loss of feeling (sensory loss) in the affected area if there is sensory damage. In the United States, roughly 1 in 50 ...

Treatment

Treatment for enteroviral infection is mainly supportive. In cases of pleurodynia, treatment consists of analgesics to relieve the severe pain that occurs in patients with the disease; in some severe cases, opiates may be needed. Treatment for aseptic meningitis caused by enteroviruses is also mainly symptomatic. In patients with enteroviral carditis, treatment consists of the prevention and treatment of complications such as arrhythmias, pericardial effusion, and cardiac failure. Other treatments that have been investigated for enteroviral carditis include

intravenous immunoglobulin Immunoglobulin therapy is the use of a mixture of antibodies (normal human immunoglobulin or NHIG) to treat several health conditions. These conditions include primary immunodeficiency, immune thrombocytopenic purpura, chronic inflammatory dem ...

Taxonomy

The enterovirus genus includes the following fifteen species: * '' Enterovirus A'' (formerly ''Human enterovirus A'') * '' Enterovirus B'' (formerly ''Human enterovirus B'') * ''

Enterovirus C Enterovirus C is a species of enterovirus. Its best known subtype is poliovirus, the cause of poliomyelitis. There are three serotypes of poliovirus, PV1, PV2, and PV3. Other subtypes of Enterovirus C include EV-C95, EV-C96, EV-C99, EV-C102, EV ...

'' (formerly ''Human enterovirus C'') * ''

Enterovirus D Enterovirus D is a species of enterovirus which causes disease in humans. Five subtypes have been identified to date: *Enterovirus 68: causes respiratory disease, and is associated with acute flaccid paralysis (AFP) – a disease similar to poli ...

'' (formerly ''Human enterovirus D'') * ''

Enterovirus E ''Enterovirus E'' (formerly bovine enterovirus (BEV)) is a picornavirus of the genus '' Enterovirus''. The virus may also be referred to as enteric cytopathic bovine orphan virus (ECBO). It is endemic in cattle populations worldwide, and althoug ...

'' (formerly ''Bovine enterovirus'' group A) * ''

Enterovirus F ''Enterovirus'' is a genus of Positive sense#RNA sense in viruses, positive-sense single-stranded RNA viruses associated with several human and mammalian diseases. Enteroviruses are named by their transmission-route through the intestine ('enteri ...

'' (formerly ''Bovine enterovirus'' group B) * '' Enterovirus G'' (formerly ''Porcine enterovirus B'') * '' Enterovirus H'' (formerly ''Simian enterovirus A'') * ''

Enterovirus I ''Enterovirus'' is a genus of positive-sense single-stranded RNA viruses associated with several human and mammalian diseases. Enteroviruses are named by their transmission-route through the intestine ('enteric' meaning intestinal). Serologic st ...

'' * ''

Enterovirus J ''Enterovirus'' is a genus of positive-sense single-stranded RNA viruses associated with several human and mammalian diseases. Enteroviruses are named by their transmission-route through the intestine ('enteric' meaning intestinal). Serologic s ...

'' * '' Enterovirus K'' * ''

Enterovirus L ''Enterovirus'' is a genus of positive-sense single-stranded RNA viruses associated with several human and mammalian diseases. Enteroviruses are named by their transmission-route through the intestine ('enteric' meaning intestinal). Serologic s ...

'' * ''

Rhinovirus A The rhinovirus (from the grc, ῥίς, rhis "nose", , romanized: "of the nose", and the la, vīrus) is the most common viral infectious agent in humans and is the predominant cause of the common cold. Rhinovirus infection proliferates in tem ...

'' (formerly ''Human rhinovirus A'') * ''

Rhinovirus B The rhinovirus (from the grc, ῥίς, rhis "nose", , romanized: "of the nose", and the la, vīrus) is the most common viral infectious agent in humans and is the predominant cause of the common cold. Rhinovirus infection proliferates in tem ...

'' (formerly ''Human rhinovirus B'') * ''

Rhinovirus C The rhinovirus (from the grc, ῥίς, rhis "nose", , romanized: "of the nose", and the la, vīrus) is the most common viral infectious agent in humans and is the predominant cause of the common cold. Rhinovirus infection proliferates in tem ...

'' (formerly ''Human rhinovirus C'') These fifteen species'

include: * Coxsackievirus ** ''Enterovirus A:'' serotypes CVA-2, CVA-3, CVA-4, CVA-5, CVA-6, CVA-7, CVA-8, CVA-10, CVA-12, CVA-14, and CVA-16. ** ''Enterovirus B:'' serotypes CVB-1, CVB-2, CVB-3, CVB-4, CVB-5, CVB-6, and CVA-9. ** ''Enterovirus C:'' serotypes CVA-1, CVA-11, CVA-13, CVA-17, CVA-19, CVA-20, CVA-21, CVA-22, and CVA-24. * Echovirus ** ''Enterovirus B:'' serotypes E-1, E-2, E-3, E-4, E-5, E-6, E-7, E-9, E-11 through E-21, E-24, E-25, E-26, E-27, E-29, E-30, E-31, E32, and E-33. * Enterovirus ** ''Enterovirus A:'' serotypes EV-A71, EV-A76, EV-A89 through EV-A92, EV-A114, EV-A119, EV-A120, EV-A121, SV19, SV43, SV46, and BabEV-A13. ** ''Enterovirus B:'' serotypes EV-B69, EV-B73 through EV-B75, EV-B77 through EV-B88, EV-B93, EV-B97, EV-B98, EV-B100, EV-B101, EV-B106, EV-B107, EV-B110 through EV-B113, and SA5. ** ''Enterovirus C:'' serotypes EV-C95, EV-C96, EV-C99, EV-C102, EV-C104, EV-C105, EV-C109, EV-C113, EV-C116, EV-C117, and EV-C118. ** ''Enterovirus D:'' serotypes EV-D68, EV-D70, EV-D94, EV-D111, and EV-D120. ** ''Enterovirus E:'' serotypes EV-E1, EV-E2, EV-E3, EV-E4, and EV-E5. ** ''Enterovirus F:'' serotypes EV-F1, EV-F2, EV-F3, EV-F4, EV-F5, EV-F6, and EV-F7. ** ''Enterovirus G:'' serotypes EV-G1 through EV-G20. ** ''Enterovirus H:'' serotype EV-H. ** ''Enterovirus I:'' serotype EV-I1 and EV-I2. ** ''Enterovirus J:'' serotypes: EV-J1, EV-J103, and EV-J108. ** ''Enterovirus K:'' serotype EV-K1 and EV-K2. ** ''Enterovirus L:'' serotype EV-L1. * Rhinovirus ** ''Rhinovirus A:'' serotypes RV-A1, RV-A1B, RV-A2, RV-A7 through RV-A13, RV-A15, RV-A16, RV-A18 through RV-A25, RV-A28 through RV-A34, RV-A36, RV-A38 through RV-A41, RV-A43, RV-A45 through RV-A47, RV-A49 through RV-A51, RV-A53 through RV-A68, RV-A71, RV-A73 through RV-A78, RV-A80 through RV-A82, RV-A85, RV-A88 through RV-A90, RV-A94, RV-A96, and RV-A100 through RV-A108 ** ''Rhinovirus B:'' serotypes RV-B3 through RV-B6, RV-B14, RV-B17, RV-B26, RV-B27, RV-B35, RV-B37, RV-B42, RV-B48, RV-B52, RV-B69, RV-B70, RV-B72, RV-B79, RV-B83, RV-B84, RV-B86, RV-B91 through RV-B93, RV-B97, and RV-B99 through RV-B104 ** ''Rhinovirus C:'' serotypes RV-C1 through RV-C51, RV-C54, RV-C55, and RV-C56. * Poliovirus ** ''Enterovirus C:'' serotypes PV-1, PV-2, and PV-3.

References

External links

ICTV International Committee on Taxonomy of Viruses (official site)

* ttp://www.alertnet.org/thenews/newsdesk/PEK295543.htm alertnet.org, FACTBOX-Q&A on hand, foot and mouth disease* {{Taxonbar, from=Q519796 Virus genera