Molecular detection of respiratory viruses in clinical specimens from children with acute respiratory disease in Iran. 2010

Somayeh Shatizadeh Malekshahi, and Talat Mokhtari Azad, and Jila Yavarian, and Shohreh Shahmahmoodi, and Maryam Naseri, and Farhad Rezaei
Virology Department, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.

BACKGROUND Viruses are the most common causes of respiratory tract infections in children. The implementation of rapid virology assays can identify the most common pathogens involved. This study was undertaken on Iranian children less than 6 years old with respiratory infection. METHODS A total of 202 specimens were tested for the presence of 9 respiratory viruses by developing 3 multiplex reverse transcription-polymerase chain reaction and 1 uniplex polymerase chain reaction assays. RESULTS Viral pathogens were detected in 92 samples (45.5%) with 5.4% having dual infections. Overall, respiratory syncytial virus was the most frequently identified virus (16.8%), followed by adenovirus (14.4%), influenza A virus (4.9%), parainfluenza virus-3 (4.4%), parainfluenza virus-1 (2.9%), and both influenza B virus and hMPV (0.49). CONCLUSIONS Respiratory tract infection is a frequent cause of pediatric morbidity and mortality and a common reason for admission in acute care hospitals and outpatients visits. Appropriate diagnostic testing is important for specific diagnosis at an early stage of the illness because of the similarity in clinical presentation of patients with different viral infections caused by several respiratory pathogens.

UI MeSH Term Description Entries
D007223 Infant A child between 1 and 23 months of age. Infants
D007231 Infant, Newborn An infant during the first 28 days after birth. Neonate,Newborns,Infants, Newborn,Neonates,Newborn,Newborn Infant,Newborn Infants
D007492 Iran A country bordering the Gulf of Oman, the Persian Gulf, and the Caspian Sea, between Iraq and Pakistan. The capital is Tehran. Islamic Republic of Iran
D009980 Influenza A virus The type species of the genus ALPHAINFLUENZAVIRUS that causes influenza and other diseases in humans and animals. Antigenic variation occurs frequently between strains, allowing classification into subtypes and variants. Transmission is usually by aerosol (human and most non-aquatic hosts) or waterborne (ducks). Infected birds shed the virus in their saliva, nasal secretions, and feces. Alphainfluenzavirus influenzae,Avian Orthomyxovirus Type A,FLUAV,Fowl Plague Virus,Human Influenza A Virus,Influenza Virus Type A,Influenza Viruses Type A,Myxovirus influenzae-A hominis,Myxovirus influenzae-A suis,Myxovirus pestis galli,Orthomyxovirus Type A,Orthomyxovirus Type A, Avian,Orthomyxovirus Type A, Human,Orthomyxovirus Type A, Porcine,Pestis galli Myxovirus,Fowl Plague Viruses,Influenza A viruses,Myxovirus influenzae A hominis,Myxovirus influenzae A suis,Myxovirus, Pestis galli,Myxoviruses, Pestis galli,Pestis galli Myxoviruses,Plague Virus, Fowl,Virus, Fowl Plague
D009981 Influenza B virus Species of the genus BETAINFLUENZAVIRUS that cause HUMAN INFLUENZA and other diseases primarily in humans. Antigenic variation is less extensive than in type A viruses (INFLUENZA A VIRUS) and consequently there is no basis for distinct subtypes or variants. Epidemics are less likely than with INFLUENZA A VIRUS and there have been no pandemics. Previously only found in humans, Influenza B virus has been isolated from seals which may constitute the animal reservoir from which humans are exposed. Betainfluenzavirus influenzae,FLUBV,Human Influenza B Virus,Influenza Viruses Type B,Influenza virus type B,Orthomyxoviruses Type B,Influenza B viruses
D012136 Respiratory Syncytial Viruses A group of viruses in the PNEUMOVIRUS genus causing respiratory infections in various mammals. Humans and cattle are most affected but infections in goats and sheep have also been reported. Chimpanzee Coryza Agent,Orthopneumovirus,RSV Respiratory Syncytial Virus,Chimpanzee Coryza Agents,Coryza Agent, Chimpanzee,Orthopneumoviruses,Respiratory Syncytial Virus,Syncytial Virus, Respiratory,Virus, Respiratory Syncytial
D012141 Respiratory Tract Infections Invasion of the host RESPIRATORY SYSTEM by microorganisms, usually leading to pathological processes or diseases. Respiratory System Infections,Upper Respiratory Tract Infection,Upper Respiratory Tract Infections,Infections, Respiratory,Infections, Respiratory Tract,Infections, Upper Respiratory,Infections, Upper Respiratory Tract,Respiratory Infections,Upper Respiratory Infections,Infection, Respiratory System,Infection, Respiratory Tract,Respiratory Infection, Upper,Respiratory System Infection,Respiratory Tract Infection
D002648 Child A person 6 to 12 years of age. An individual 2 to 5 years old is CHILD, PRESCHOOL. Children
D002675 Child, Preschool A child between the ages of 2 and 5. Children, Preschool,Preschool Child,Preschool Children
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man

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