Influenza and COVID-19 co-infection and vaccine effectiveness against severe cases: a mathematical modeling study

Autor: Jingyi Liang, Yangqianxi Wang, Zhijie Lin, Wei He, Jiaxi Sun, Qianyin Li, Mingyi Zhang, Zichen Chang, Yinqiu Guo, Wenting Zeng, Tie Liu, Zhiqi Zeng, Zifeng Yang, Chitin Hon
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Frontiers in Cellular and Infection Microbiology, Vol 14 (2024)
Druh dokumentu: article
ISSN: 2235-2988
DOI: 10.3389/fcimb.2024.1347710
Popis: BackgroundInfluenza A virus have a distinctive ability to exacerbate SARS-CoV-2 infection proven by in vitro studies. Furthermore, clinical evidence suggests that co-infection with COVID-19 and influenza not only increases mortality but also prolongs the hospitalization of patients. COVID-19 is in a small-scale recurrent epidemic, increasing the likelihood of co-epidemic with seasonal influenza. The impact of co-infection with influenza virus and SARS-CoV-2 on the population remains unstudied.MethodHere, we developed an age-specific compartmental model to simulate the co-circulation of COVID-19 and influenza and estimate the number of co-infected patients under different scenarios of prevalent virus type and vaccine coverage. To decrease the risk of the population developing severity, we investigated the minimum coverage required for the COVID-19 vaccine in conjunction with the influenza vaccine, particularly during co-epidemic seasons.ResultCompared to the single epidemic, the transmission of the SARS-CoV-2 exhibits a lower trend and a delayed peak when co-epidemic with influenza. Number of co-infection cases is higher when SARS-CoV-2 co-epidemic with Influenza A virus than that with Influenza B virus. The number of co-infected cases increases as SARS-CoV-2 becomes more transmissible. As the proportion of individuals vaccinated with the COVID-19 vaccine and influenza vaccines increases, the peak number of co-infected severe illnesses and the number of severe illness cases decreases and the peak time is delayed, especially for those >60 years old.ConclusionTo minimize the number of severe illnesses arising from co-infection of influenza and COVID-19, in conjunction vaccinations in the population are important, especially priority for the elderly.
Databáze: Directory of Open Access Journals