Citation: Shengyao Chen, Muhammad Saqib, Hafiz Sajid Khan, Yuan Bai, Usman Ali Ashfaq, Muhammad Khalid Mansoor, Abulimti Moming, Jing Liu, Min Zhou, Saifullah Khan Niazi, Qiaoli Wu, Awais-Ur-Rahman Sial, Shuang Tang, Muhammad Hassan Sarfraz, Aneela Javed, Sumreen Hayat, Mohsin Khurshid, Iahtasham Khan, Muhammad Ammar Athar, Zeeshan Taj, Bo Zhang, Fei Deng, Ali Zohaib, Shu Shen. Risk of infection with arboviruses in a healthy population in Pakistan based on seroprevalence .VIROLOGICA SINICA, 2024, 39(3) : 369-377.  http://dx.doi.org/10.1016/j.virs.2024.04.001

Risk of infection with arboviruses in a healthy population in Pakistan based on seroprevalence

  • Infectious diseases caused by arboviruses are a public health concern in Pakistan. However, studies on data prevalence and threats posed by arboviruses are limited. This study investigated the seroprevalence of arboviruses in a healthy population in Pakistan, including severe fever with thrombocytopenia syndrome virus (SFTSV), Crimean-Congo hemorrhagic fever virus (CCHFV), Tamdy virus (TAMV), and Karshi virus (KSIV) based on a newly established luciferase immunoprecipitation system (LIPS) assays, and Zika virus (ZIKV) by enzyme-linked immunosorbent assays (ELISA). Neutralizing activities against these arboviruses were further examined from the antibody positive samples. The results showed that the seroprevalence of SFTSV, CCHFV, TAMV, KSIV, and ZIKV was 17.37%, 7.58%, 4.41%, 1.10%, and 6.48%, respectively, and neutralizing to SFTSV (1.79%), CCHFV (2.62%), and ZIKV (0.69%) were identified, as well as to the SFTSV-related Guertu virus (GTV, 0.83%). Risk factors associated with the incidence of exposure and levels of antibody response were analyzed. Moreover, co-exposure to different arboviruses was demonstrated, as thirty-seven individuals were having antibodies against multiple viruses and thirteen showed neutralizing activity. Males, individuals aged ≤40 years, and outdoor workers had a high risk of exposure to arboviruses. All these results reveal the substantial risks of infection with arboviruses in Pakistan, and indicate the threat from co-exposure to multiple arboviruses. The findings raise the need for further epidemiologic investigation in expanded regions and populations and the necessity to improve health surveillance in Pakistan.

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    Risk of infection with arboviruses in a healthy population in Pakistan based on seroprevalence

      Corresponding author: Fei Deng, df@wh.iov.cn
      Corresponding author: Ali Zohaib, ali.zohaib@iub.edu.pk
      Corresponding author: Shu Shen, shenshu@wh.iov.cn
    • a. Key Laboratory of Virology and National Virus Resource Center, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan 430071, China;
    • b. University of Chinese Academy of Sciences, Beijing 100049, China;
    • c. Faculty of Veterinary Science, University of Agriculture Faisalabad, Faisalabad 38040, Pakistan;
    • d. The Children's Hospital Faisalabad, 38000, Pakistan;
    • e. Department of Bioinformatics and Biotechnology, Government College University Faisalabad, Faisalabad 38000, Pakistan;
    • f. Department of Microbiology, Faculty of Veterinary and Animal Sciences, The Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan;
    • g. Hubei Jiangxia Laboratory, Wuhan 430200, China;
    • h. Key Laboratory of Special Pathogens and Biosafety, Wuhan Institute of Virology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan 430071, China;
    • i. Armed Forces Institute of Pathology (AFIP), Rawalpindi 46000, Pakistan;
    • j. Department of Clinical Studies, Faculty of Veterinary & Animal Sciences, Pir Mehr Ali Shah Arid Agriculture University, Rawalpindi 46300, Pakistan;
    • k. Institute of Microbiology, Government College University Faisalabad, Faisalabad 38000, Pakistan;
    • l. Atta-ur-Rahman School of Applied Biosciences, National University of Science and Technology, Islamabad 44000, Pakistan;
    • m. Department of Clinical Sciences, University of Veterinary and Animal Sciences, Lahore Sub-campus, Jhang 35200, Pakistan;
    • n. Department of Molecular Pathology, National Medical Center DHA Phase 1, Karachi 75500, Pakistan

    Abstract: Infectious diseases caused by arboviruses are a public health concern in Pakistan. However, studies on data prevalence and threats posed by arboviruses are limited. This study investigated the seroprevalence of arboviruses in a healthy population in Pakistan, including severe fever with thrombocytopenia syndrome virus (SFTSV), Crimean-Congo hemorrhagic fever virus (CCHFV), Tamdy virus (TAMV), and Karshi virus (KSIV) based on a newly established luciferase immunoprecipitation system (LIPS) assays, and Zika virus (ZIKV) by enzyme-linked immunosorbent assays (ELISA). Neutralizing activities against these arboviruses were further examined from the antibody positive samples. The results showed that the seroprevalence of SFTSV, CCHFV, TAMV, KSIV, and ZIKV was 17.37%, 7.58%, 4.41%, 1.10%, and 6.48%, respectively, and neutralizing to SFTSV (1.79%), CCHFV (2.62%), and ZIKV (0.69%) were identified, as well as to the SFTSV-related Guertu virus (GTV, 0.83%). Risk factors associated with the incidence of exposure and levels of antibody response were analyzed. Moreover, co-exposure to different arboviruses was demonstrated, as thirty-seven individuals were having antibodies against multiple viruses and thirteen showed neutralizing activity. Males, individuals aged ≤40 years, and outdoor workers had a high risk of exposure to arboviruses. All these results reveal the substantial risks of infection with arboviruses in Pakistan, and indicate the threat from co-exposure to multiple arboviruses. The findings raise the need for further epidemiologic investigation in expanded regions and populations and the necessity to improve health surveillance in Pakistan.

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