Influenza incidence overlapped with COVID‐19 or under COVID‐19 control measures

Abstract Introduction COVID‐19 pandemic caused infection when influenza was still prevalent. This study was conducted to examine influenza incidence overlapped with COVID‐19 and the effect of the COVID‐19 measures on influenza incidence as a proxy. Methods The routine sentinel surveillance data on C...

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Main Authors: Azad Shokri, Ghobad Moradi, Farhad Moradpour, Amjad Mohamadi Bolbanabad, Fatemeh Younesi, Parisa Daftarifard, Ali Ebrazeh
Format: Article
Language:English
Published: Wiley 2022-08-01
Series:Immunity, Inflammation and Disease
Subjects:
Online Access:https://doi.org/10.1002/iid3.672
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author Azad Shokri
Ghobad Moradi
Farhad Moradpour
Amjad Mohamadi Bolbanabad
Fatemeh Younesi
Parisa Daftarifard
Ali Ebrazeh
author_facet Azad Shokri
Ghobad Moradi
Farhad Moradpour
Amjad Mohamadi Bolbanabad
Fatemeh Younesi
Parisa Daftarifard
Ali Ebrazeh
author_sort Azad Shokri
collection DOAJ
description Abstract Introduction COVID‐19 pandemic caused infection when influenza was still prevalent. This study was conducted to examine influenza incidence overlapped with COVID‐19 and the effect of the COVID‐19 measures on influenza incidence as a proxy. Methods The routine sentinel surveillance data on COVID‐19 and influenza was obtained from the national integrated care electronic health record system. Data were collected in 28 points from 11 months before the outbreak (from March 2019 to January 2020) and 17 months after the outbreak (February 2020 to June 2021). Results In Iran, the incidence rate of influenza was 51.1 cases per 100,000 populations in November 2019, while it was only 0.1 in November 2020. The average number of influenza cases specifically for the Kurdistan province during the seasonal flu peak in 2019–2020 was 2.5 cases per 100,000 populations, while the average of influenza cases in the preceding 4 years was 0.4 cases per 100,000 populations. In other words, the seasonal peak of influenza in Iran was significantly higher than that of previous and after years. Conclusion It seems that some of the nonpharmaceutical interventions (NPIs) used to control COVID‐19 are effective against influenza epidemics and the results indicated a marked decline in the number of influenza cases may cause after the implementation of public health measures for COVID‐19. The results showed the seasonal peak of influenza in Iran was significantly higher than that of previous years, so it seems that the influenza winter peak season (November 2019) overlapped with SARS‐CoV‐2 causing observed undetected infection during influenza winter peak.
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spelling doaj.art-6afa2f71f22548fca062c561b18710132022-12-22T00:58:27ZengWileyImmunity, Inflammation and Disease2050-45272022-08-01108n/an/a10.1002/iid3.672Influenza incidence overlapped with COVID‐19 or under COVID‐19 control measuresAzad Shokri0Ghobad Moradi1Farhad Moradpour2Amjad Mohamadi Bolbanabad3Fatemeh Younesi4Parisa Daftarifard5Ali Ebrazeh6Social Determinants of Health Research Center, Research Institute for Health Development Kurdistan University of Medical Sciences Sanandaj IranSocial Determinants of Health Research Center, Research Institute for Health Development Kurdistan University of Medical Sciences Sanandaj IranSocial Determinants of Health Research Center, Research Institute for Health Development Kurdistan University of Medical Sciences Sanandaj IranSocial Determinants of Health Research Center, Research Institute for Health Development Kurdistan University of Medical Sciences Sanandaj IranDepartment of Health Services Management, Faculty of Management and Information Iran University of Medical Sciences Tehran IranEnglish Language Research Center, South Tehran Branch IAU Tehran IranDepartment of Public Health, School of Public Health Qom University of Medical Sciences Qom IranAbstract Introduction COVID‐19 pandemic caused infection when influenza was still prevalent. This study was conducted to examine influenza incidence overlapped with COVID‐19 and the effect of the COVID‐19 measures on influenza incidence as a proxy. Methods The routine sentinel surveillance data on COVID‐19 and influenza was obtained from the national integrated care electronic health record system. Data were collected in 28 points from 11 months before the outbreak (from March 2019 to January 2020) and 17 months after the outbreak (February 2020 to June 2021). Results In Iran, the incidence rate of influenza was 51.1 cases per 100,000 populations in November 2019, while it was only 0.1 in November 2020. The average number of influenza cases specifically for the Kurdistan province during the seasonal flu peak in 2019–2020 was 2.5 cases per 100,000 populations, while the average of influenza cases in the preceding 4 years was 0.4 cases per 100,000 populations. In other words, the seasonal peak of influenza in Iran was significantly higher than that of previous and after years. Conclusion It seems that some of the nonpharmaceutical interventions (NPIs) used to control COVID‐19 are effective against influenza epidemics and the results indicated a marked decline in the number of influenza cases may cause after the implementation of public health measures for COVID‐19. The results showed the seasonal peak of influenza in Iran was significantly higher than that of previous years, so it seems that the influenza winter peak season (November 2019) overlapped with SARS‐CoV‐2 causing observed undetected infection during influenza winter peak.https://doi.org/10.1002/iid3.672COVID‐19influenzanonpharmaceutical interventions
spellingShingle Azad Shokri
Ghobad Moradi
Farhad Moradpour
Amjad Mohamadi Bolbanabad
Fatemeh Younesi
Parisa Daftarifard
Ali Ebrazeh
Influenza incidence overlapped with COVID‐19 or under COVID‐19 control measures
Immunity, Inflammation and Disease
COVID‐19
influenza
nonpharmaceutical interventions
title Influenza incidence overlapped with COVID‐19 or under COVID‐19 control measures
title_full Influenza incidence overlapped with COVID‐19 or under COVID‐19 control measures
title_fullStr Influenza incidence overlapped with COVID‐19 or under COVID‐19 control measures
title_full_unstemmed Influenza incidence overlapped with COVID‐19 or under COVID‐19 control measures
title_short Influenza incidence overlapped with COVID‐19 or under COVID‐19 control measures
title_sort influenza incidence overlapped with covid 19 or under covid 19 control measures
topic COVID‐19
influenza
nonpharmaceutical interventions
url https://doi.org/10.1002/iid3.672
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AT ghobadmoradi influenzaincidenceoverlappedwithcovid19orundercovid19controlmeasures
AT farhadmoradpour influenzaincidenceoverlappedwithcovid19orundercovid19controlmeasures
AT amjadmohamadibolbanabad influenzaincidenceoverlappedwithcovid19orundercovid19controlmeasures
AT fatemehyounesi influenzaincidenceoverlappedwithcovid19orundercovid19controlmeasures
AT parisadaftarifard influenzaincidenceoverlappedwithcovid19orundercovid19controlmeasures
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