Usefulness of Ct value in acute respiratory infections caused by respiratory syncytial virus A and B and influenza virus A (H1N1)pdm09, A (H3N2) and B

Author(s):  
Jordi Reina ◽  
Carmen Morales ◽  
María Busquets ◽  
Cristina Norte
2009 ◽  
Vol 162 (1-2) ◽  
pp. 88-90 ◽  
Author(s):  
Andrew D. Sails ◽  
David Saunders ◽  
Stephanie Airs ◽  
David Roberts ◽  
Gary Eltringham ◽  
...  

1976 ◽  
Vol 77 (3) ◽  
pp. 383-392 ◽  
Author(s):  
E. O. Caul ◽  
D. K. Waller ◽  
S. K. R. Clarke ◽  
B. D. Corner

SUMMARYAmong 741 children under 5 years admitted to hospital with respiratory infections during two winters, infection with influenza A virus was diagnosed in 70 (9%), with influenza B virus in 8 (1%), and with respiratory syncytial virus (RSV) in 259 (35 %). Both influenza virus and RSV infections were diagnosed most frequently in children under the age of one year, and diagnosed more frequently in males than females. Influenza illnesses were more severe in boys than girls. Both infections occurred more often, but were not more severe, in children from a conurbation than in those from ‘rural’ areas. Convulsions were the cause of 36% of admissions with influenza A infections, but were rare in RSV infections. Bronchiolitis was the reason for 39% of admissions with RSV infections, but was rare in influenza infections. It is suggested that infants admitted to hospital are a good source of influenza virus strains for monitoring arttigenic variation.


2019 ◽  
Vol 91 (9) ◽  
pp. 1602-1607 ◽  
Author(s):  
Van Hoan Nguyen ◽  
Fiona M Russell ◽  
David AB Dance ◽  
Keoudomphone Vilivong ◽  
Souphatsone Phommachan ◽  
...  

Author(s):  
Fahimeh Sadat Aghamirmohammadali ◽  
Kaveh Sadeghi ◽  
Nazanin Zahra Shafiei-Jandaghi ◽  
Zahra Khoban ◽  
Talat Mokhtari-Azad ◽  
...  

Background and Objectives: Severe acute respiratory infections (SARI) remain an important cause for childhood morbid- ity worldwide. We designed a research with the objective of finding the frequency of respiratory viruses, particularly WU and KI polyomaviruses (WUPyV & KIPyV), human coronaviruses (HCoVs), human respiratory syncytial virus (HRSV) and human parechovirus (HPeV) in hospitalized children who were influenza negative. Materials and Methods: Throat swabs were collected from children younger than 5 years who have been hospitalized for SARI and screened for WUPyV, KIPyV, HCoVs, HRSV and HPeV using Real time PCR. Results: A viral pathogen was identified in 23 (11.16%) of 206 hospitalized children with SARI. The rate of virus detection was considerably greater in infants <12 months (78.2%) than in older children (21.8%). The most frequently detected vi- ruses were HCoVs with 7.76% of positive cases followed by KIPyV (2%) and WUPyV (1.5%). No HPeV and HRSV were detected in this study. Conclusion: This research shown respiratory viruses as causes of childhood acute respiratory infections, while as most of mentioned viruses usually causes mild respiratory diseases, their frequency might be higher in outpatient children. Mean- while as HRSV is really sensitive to inactivation due to environmental situations and its genome maybe degraded, then for future studies, we need to use fresh samples for HRSV detection. These findings addressed a need for more studies on viral respiratory tract infections to help public health.


Infection ◽  
2019 ◽  
Vol 47 (3) ◽  
pp. 425-433 ◽  
Author(s):  
Spiridon Topoulos ◽  
Christian Giesa ◽  
Sören Gatermann ◽  
Rene Fussen ◽  
Sebastian Lemmen ◽  
...  

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