Abstract
Introduction Since the outbreak of coronavirus disease 2019 (COVID-19), non-pharmaceutical interventions (NPIs) have been the primary preventative measure to mitigate the COVID-19 burden. However, these NPIs have also altered the pattern and incidence of other respiratory pathogens. This review aims to explore the effects of NPIs used against COVID-19, on influenza incidence.
Methods A systematic literature search was conducted in selected databases (PubMed, Medline, Embase). Documents that highlighted a change in influenza epidemiology during the COVID-19 pandemic and were linked to NPIs were included. The search covered articles from 1 January 2020 to 7 December 2022.
Results This review included 13 studies reporting data from three different continents. A 14-100% decrease of influenza activity was observed since the enforcement of NPIs in early 2020.
Conclusion This study suggests that the NPIs implemented during the COVID-19 pandemic have also significantly reduced influenza incidence. This is most likely because both coronavirus and influenza are transmitted through a similar route and the NPIs prevent this. The use of NPIs is suggested to overcome some burden of future influenza epidemics.
References
Arbeitskreis Blut, Untergruppe «Bewertung Blutassoziierter Krankheitserreger». Influenza Virus. Transfus Med Hemother. 2009;36(1):32-39. Available from: https://doi.org/10.1159/000197314
Javanian M, Barary M, Ghebrehewet S, et al. A brief review of influenza virus infection. J Med Virol. 2021;93(8):4638-46. Available from: https://doi.org/10.1002/jmv.26990
Centers for Disease Control and Prevention. Key facts about influenza (flu). Centers for Disease Control and Prevention; 2022 [cited 11th December 2022]. Available from: https://www.cdc.gov/flu/about/keyfacts.htm
GBD 2016 Lower Respiratory Infections Collaborators. Estimates of the global, regional, and national morbidity, mortality, and aetiologies of lower respiratory infections in 195 countries, 1990-2016: a systematic analysis for the Global Burden of Disease Study 2016. Lancet Infect Dis. 2018 Nov;18(11):1191-1210. Available from: https://doi.org/10.1016/S1473-3099(18)30310-4
World Health Organization. Influenza (seasonal). World Health Organization [cited 11th December 2022]. Available from: https://www.who.int/en/news-room/fact-sheets/detail/influenza-(seasonal)
Mao L, Yang Y, Qiu Y, Yang Y. Annual economic impacts of seasonal influenza on US counties: spatial heterogeneity and patterns. Int J Health Geogr 2012;11:16. Available from: https://doi.org/10.1186/1476-072X-11-16
Morens DM, Taubenberger JK. Pandemic influenza: certain uncertainties. Rev Med Virol. 2011;21(5):262-84. Available from: https://doi.org/10.1002/rmv.689
European Centre for Disease Prevention and Control. Coronaviruses. European Centre for Disease Prevention and Control. 2022 [cited 11th December 2022]. Available from: https://www.ecdc.europa.eu/en/covid-19/latest-evidence/coronaviruses
World Health Organization. Archived: WHO timeline - Covid-19. World Health Organization [cited 12 December 2022]. Available from: https://www.who.int/news/item/27-04-2020-who-timeline---covid-19
Olsen SJ, Winn AK, Budd AP, et al. Changes in Influenza and other respiratory virus activity during the COVID-19 pandemic - United States, 2020-2021. MMWR Morb Mortal Wkly Rep. 2021;70(29):1013-9. Available from: https://doi.org/10.15585/mmwr.mm7029a1
World Health Organization. Coronavirus disease (Covid-19) – events as they happen. World Health Organization [cited 13 December 202]. Available from: https://www.who.int/emergencies/diseases/novel-coronavirus-2019/events-as-they-happen
World Health Organization. WHO Coronavirus (Covid-19) dashboard. World Health Organization; [cited 11th December 2022]. Available from: https://covid19.who.int/
Chow EJ, Uyeki TM, Chu HY. The effects of the COVID-19 pandemic on community respiratory virus activity. Nat Rev Microbiol. 2022:21(3):195-210. Available from: https://doi.org/10.1038/s41579-022-00807-9
Eubank S, Eckstrand I, Lewis B, et al. Commentary on Ferguson, et al., “Impact of non-pharmaceutical interventions (NPIs) to reduce COVID-19 mortality and healthcare demand”. Bull Math Biol. 2020;82(4):52. Available from: https://doi.org/10.1007/s11538-020-0072-x
Mohammadi Z, Cojocaru MG, Thommes EW. Human behaviour, NPI and mobility reduction effects on COVID-19 transmission in different countries of the world. BMC Public Health. 2022;22(1):1594. Available from: https://doi.org/10.1186/s12889-022-13921-3
van Summeren J, Meijer A, Aspelund G, et al. Low levels of respiratory syncytial virus activity in Europe during the 2020/21 season: what can we expect in the coming summer and autumn/winter? Euro Surveill. 2021;26(29). Available from: https://doi.org/10.2807/1560-7917.ES.2021.26.29.2100639
Olsen SJ, Azziz-Baumgartner E, Budd AP, et al. Decreased influenza activity during the COVID-19 pandemic - United States, Australia, Chile, and South Africa, 2020. MMWR Morb Mortal Wkly Rep. 2020;69(37):1305-9. Available from: https://doi.org/10.15585/mmwr.mm6937a6
Huh K, Jung J, Hong J, et al. Impact of nonpharmaceutical interventions on the incidence of respiratory infections during the Coronavirus disease 2019 (COVID-19) outbreak in Korea: A nationwide surveillance study. Clin Infect Dis. 2021;72(7):e184-e91. Available from: https://doi.org/10.1093/cid/ciaa1682
Page MJ, Moher D, Bossuyt PM, et al. PRISMA 2020 explanation and elaboration: updated guidance and exemplars for reporting systematic reviews. BMJ. 2021;372:n160. Available from: https://doi.org/10.1136/bmj.n160
Doroshenko A, Lee N, MacDonald C, et al. Decline of influenza and respiratory viruses with COVID-19 public health measures: Alberta, Canada. Mayo Clin Proc. 2021;96(12):3042-52. Available from: https://doi.org/10.1016/j.mayocp.2021.09.004
Geng Y, Li G, Zhang L. The impact of COVID-19 interventions on influenza and mycobacterium tuberculosis infection. Front Public Health. 2021;9:672568. Available from: https://doi.org/10.3389/fpubh.2021.672568
Huang Q-M, Song W-Q, Liang F, et al. Non-pharmaceutical interventions implemented to control the COVID-19 were associated with reduction of influenza incidence. Front Public Health. 2022;10:773271. Available from: https://doi.org/10.3389/fpubh.2022.773271
Kim J-H, Kim HY, Lee M, et al. Respiratory syncytial virus outbreak without influenza in the second year of the Coronavirus disease 2019 pandemic: A national sentinel surveillance in Korea, 2021-2022 season. J Korean Med Sci. 2022;37(34):e258. Available from: https://doi.org/10.3346/jkms.2022.37.e258
Kim S, Park JO, Lee HA, et al. Unintended beneficial effects of COVID-19 on influenza-associated emergency department use in Korea. Am J Emerg Med. 2022;59:1-8. Available from: https://doi.org/10.1016/j.ajem.2022.06.039
Lee H, Lee H, Song K-H, et al. Impact of public health interventions on seasonal influenza activity during the COVID-19 outbreak in Korea. Clin Infect Dis. 2021;73(1):e132-e40. Available from: https://doi.org/10.1093/cid/ciaa672
Shokri A, Moradi G, Moradpour F, et al. Influenza incidence overlapped with COVID-19 or under COVID-19 control measures. Immun Inflamm Dis. 2022;10(8):e672. Available from: https://doi.org/10.1002/iid3.672
Song S, Li Q, Shen L, al. From outbreak to near disappearance: How did non-pharmaceutical interventions against COVID-19 affect the transmission of influenza virus? Frontiers in Public Health. 2022;10:863522. Available from: https://doi.org/10.3389/fpubh.2022.863522
Tempia S, Walaza S, Bhiman JN, et al. Decline of influenza and respiratory syncytial virus detection in facility-based surveillance during the COVID-19 pandemic, South Africa, January to October 2020. Euro Surveil. 2021;26(29). Available from: https://doi.org/10.2807/1560-7917.ES.2021.26.29.2001600
Wagatsuma K, Koolhof IS, Saito R. Was the reduction in seasonal influenza transmission during 2020 attributable to non-pharmaceutical interventions to contain Coronavirus Disease 2019 (COVID-19) in Japan? Viruses. 2022;14(7). Available from: https://doi.org/10.3390/v14071417
Wang C, Yang Y-N, Xi L, et al. Dynamics of influenza-like illness under urbanization procedure and COVID-19 pandemic in the subcenter of Beijing during 2013-2021. J Med Virol. 2022;94(8):3801-10. Available from: https://doi.org/10.1002/jmv.27803
Youssef D, Issa O, Kanso M, et al. Practice of non-pharmaceutical interventions against COVID-19 and reduction of the risk of influenza-like illness: a cross-sectional population-based study. J Pharm Policy Prac. 2022;15(1):54. Available from: https://doi.org/10.1186/s40545-022-00450-y
Zhang K, Misra A, Kim PJ, et al. Rapid disappearance of influenza following the implementation of COVID-19 mitigation measures in Hamilton, Ontario. Can Commun Dis Rep. 2021;47(4):202-9. Available from: https://doi.org/10.14745/ccdr.v47i04a04
Zhao H, Jatana S, Bartoszko J, Loeb M. Nonpharmaceutical interventions to prevent viral respiratory infection in community settings: an umbrella review. ERJ Open Res. 2022;8(2):00650-2021. Available from: https://doi.org/10.1183/23120541.00650-2021
Pietrangelo A. What are airborne diseases? Healthline. Healthline Media; 2020 [cited 11th December 2022]. Available from: https://www.healthline.com/health/airborne-diseases
Suchomel M, Steinmann J, Kampf G. Efficacies of the original and modified World Health Organization-recommended hand-rub formulations. J Hosp Infect. 2020;106(2):264-70. Available from: https://doi.org/10.1016/j.jhin.2020.08.006
Aiello AE, Coulborn RM, Perez V, Larson EL. Effect of hand hygiene on infectious disease risk in the community setting: a meta-analysis. Am J Public Health. 2008;98(8):1372-81. Available from: https://doi.org/10.2105/AJPH.2007.124610
Endo A, Uchida M, Hayashi N, et al. Within and between classroom transmission patterns of seasonal influenza among primary school students in Matsumoto city, Japan. Proc Natl Acad Sci U S A. 2021;118(46). Available from: https://doi.org/10.1073/pnas.2112605118
Fong MW, Leung NHL, Xiao J, et al. Presence of influenza virus on touch surfaces in kindergartens and primary schools. J Infect Dis. 2020;222(8):1329-33. Available from: https://doi.org/10.1093/infdis/jiaa114
Tao NPH, Makram AM, Khanh PNQ, et al. Negative impact from school closures on children and parents in Vietnam during COVID-19. Lancet Respir Med. 2022;10(8):736-8. Available from: https://doi.org/10.1016/S2213-2600(22)00221-1
Kim SJ, Lee S, Han H, et al. Parental mental health and children’s behaviors and media usage during COVID-19-related school closures. J Korean Med Sci. 2021;36(25):e184. Available from: https://doi.org/10.3346/jkms.2021.36.e184
Hawryluck L, Gold WL, Robinson S, et al. SARS control and psychological effects of quarantine, Toronto, Canada. Emerg Infect Dis. 2004;10(7):1206-12. Available from: https://doi.org/10.3201/eid1007.030703