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Striking Similarities in the Presentation and Duration of Illness of Influenza A and B in the Community: A Study Based on Sentinel Surveillance Networks in France and Turkey, 2010-2012.

Cohen JM, Silva ML, Caini S, Ciblak M, Mosnier A, Daviaud I, Matias G, Badur S, Valette M, Enouf V, Paget J, Fleming DM, IBGP study te - PLoS ONE (2015)

Bottom Line: We performed descriptive analyses and developed a multiple regression model to investigate the effect of patients and disease characteristics on the duration of illness.The average (median) reported duration of illness in the age groups 0-14 years, 15-64 years and 65+ years was 7.4 (6), 8.7 (8) and 10.5 (9) days in France, and 6.3 (6), 8.2 (7) and 9.2 (6) days in Turkey; it increased with age but did not differ by virus type; increased duration of illness was associated with antibiotics prescription.In conclusion, our findings show that influenza B infection appears not to be milder disease than influenza A infection.

View Article: PubMed Central - PubMed

Affiliation: Open Rome (Organize and Promote Epidemiological Network), Paris, France; Réseau des GROG, Paris, France.

ABSTRACT
Influenza B represents a high proportion of influenza cases in some seasons (even over 50%). The Influenza B study in General Practice (IBGP) is a multicenter study providing information about the clinical, demographic and socio-economic characteristics of patients affected by lab-confirmed influenza A or B. Influenza B patients and age-matched influenza A patients were recruited within the sentinel surveillance networks of France and Turkey in 2010-11 and 2011-12 seasons. Data were collected for each patient at the swab test day, after 9±2 days and, if not recovered, after 28±5 days. It was related to patient's characteristics, symptoms at presentation, vaccination status, prescriptions of antibiotics and antivirals, duration of illness, follow-up consultations in general practice or emergency room. We performed descriptive analyses and developed a multiple regression model to investigate the effect of patients and disease characteristics on the duration of illness. Overall, 774 influenza cases were included in the study: 419 influenza B cases (209 in France and 210 in Turkey) and 355 influenza A cases (205 in France and 150 in Turkey). There were no differences between influenza A and B patients in terms of clinical presentation and number of consultations with a practitioner; however, the use of antivirals was higher among influenza B patients in both countries. The average (median) reported duration of illness in the age groups 0-14 years, 15-64 years and 65+ years was 7.4 (6), 8.7 (8) and 10.5 (9) days in France, and 6.3 (6), 8.2 (7) and 9.2 (6) days in Turkey; it increased with age but did not differ by virus type; increased duration of illness was associated with antibiotics prescription. In conclusion, our findings show that influenza B infection appears not to be milder disease than influenza A infection.

No MeSH data available.


Related in: MedlinePlus

Questionnaire for data collection at days 9 and 28 in the IBGP study.France and Turkey, 2010–2012.
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pone.0139431.g001: Questionnaire for data collection at days 9 and 28 in the IBGP study.France and Turkey, 2010–2012.

Mentions: Further information was obtained at the time of recruitment (day 9), using a patient specific questionnaire (illustrated by an English translation in Fig 1) completed by the sentinel physician (in France) or by the study coordinator (in Turkey) on the basis of a telephone interview. Some potentially eligible influenza B patients were not recruited in France because: the lab results were not transmitted to the physician in time to contact the patient within eleven days after the swab; or the patient/GP was not reachable or did not agree to participate. Recruited patients who were not recovered at D9 were called back at D28 using the same questionnaire. Information was collected on: state of recovery (defined as date of return to normal activities), number of follow-up consultations, hospital admission and emergency room visits, drug prescriptions and details on sickness absence.


Striking Similarities in the Presentation and Duration of Illness of Influenza A and B in the Community: A Study Based on Sentinel Surveillance Networks in France and Turkey, 2010-2012.

Cohen JM, Silva ML, Caini S, Ciblak M, Mosnier A, Daviaud I, Matias G, Badur S, Valette M, Enouf V, Paget J, Fleming DM, IBGP study te - PLoS ONE (2015)

Questionnaire for data collection at days 9 and 28 in the IBGP study.France and Turkey, 2010–2012.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4591015&req=5

pone.0139431.g001: Questionnaire for data collection at days 9 and 28 in the IBGP study.France and Turkey, 2010–2012.
Mentions: Further information was obtained at the time of recruitment (day 9), using a patient specific questionnaire (illustrated by an English translation in Fig 1) completed by the sentinel physician (in France) or by the study coordinator (in Turkey) on the basis of a telephone interview. Some potentially eligible influenza B patients were not recruited in France because: the lab results were not transmitted to the physician in time to contact the patient within eleven days after the swab; or the patient/GP was not reachable or did not agree to participate. Recruited patients who were not recovered at D9 were called back at D28 using the same questionnaire. Information was collected on: state of recovery (defined as date of return to normal activities), number of follow-up consultations, hospital admission and emergency room visits, drug prescriptions and details on sickness absence.

Bottom Line: We performed descriptive analyses and developed a multiple regression model to investigate the effect of patients and disease characteristics on the duration of illness.The average (median) reported duration of illness in the age groups 0-14 years, 15-64 years and 65+ years was 7.4 (6), 8.7 (8) and 10.5 (9) days in France, and 6.3 (6), 8.2 (7) and 9.2 (6) days in Turkey; it increased with age but did not differ by virus type; increased duration of illness was associated with antibiotics prescription.In conclusion, our findings show that influenza B infection appears not to be milder disease than influenza A infection.

View Article: PubMed Central - PubMed

Affiliation: Open Rome (Organize and Promote Epidemiological Network), Paris, France; Réseau des GROG, Paris, France.

ABSTRACT
Influenza B represents a high proportion of influenza cases in some seasons (even over 50%). The Influenza B study in General Practice (IBGP) is a multicenter study providing information about the clinical, demographic and socio-economic characteristics of patients affected by lab-confirmed influenza A or B. Influenza B patients and age-matched influenza A patients were recruited within the sentinel surveillance networks of France and Turkey in 2010-11 and 2011-12 seasons. Data were collected for each patient at the swab test day, after 9±2 days and, if not recovered, after 28±5 days. It was related to patient's characteristics, symptoms at presentation, vaccination status, prescriptions of antibiotics and antivirals, duration of illness, follow-up consultations in general practice or emergency room. We performed descriptive analyses and developed a multiple regression model to investigate the effect of patients and disease characteristics on the duration of illness. Overall, 774 influenza cases were included in the study: 419 influenza B cases (209 in France and 210 in Turkey) and 355 influenza A cases (205 in France and 150 in Turkey). There were no differences between influenza A and B patients in terms of clinical presentation and number of consultations with a practitioner; however, the use of antivirals was higher among influenza B patients in both countries. The average (median) reported duration of illness in the age groups 0-14 years, 15-64 years and 65+ years was 7.4 (6), 8.7 (8) and 10.5 (9) days in France, and 6.3 (6), 8.2 (7) and 9.2 (6) days in Turkey; it increased with age but did not differ by virus type; increased duration of illness was associated with antibiotics prescription. In conclusion, our findings show that influenza B infection appears not to be milder disease than influenza A infection.

No MeSH data available.


Related in: MedlinePlus