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Using free Wi-Fi to assess impact of COVID-19 pandemic on traditional wet markets in Hanoi

Author

Listed:
  • Louis Reymondin

    (International Center for Tropical Agriculture – Hanoi Hub, Agricultural Genetics Institute
    Bioversity International)

  • Thibaud Vantalon

    (International Center for Tropical Agriculture – Hanoi Hub, Agricultural Genetics Institute)

  • Huong Thi Mai Pham

    (International Center for Tropical Agriculture – Hanoi Hub, Agricultural Genetics Institute)

  • Hieu Trung Le

    (Agriculture, Forestry, and Fishery Department – General Statistics Office of Vietnam)

  • Tuyen Thi Thanh Huynh

    (International Center for Tropical Agriculture – Hanoi Hub, Agricultural Genetics Institute)

  • Ricardo Hernandez

    (International Center for Tropical Agriculture – Hanoi Hub, Agricultural Genetics Institute)

  • Brice Even

    (International Center for Tropical Agriculture – Hanoi Hub, Agricultural Genetics Institute)

  • Thang Cong Nguyen

    (Agriculture, Forestry, and Fishery Department – General Statistics Office of Vietnam)

  • Trong Van Phan

    (International Center for Tropical Agriculture – Hanoi Hub, Agricultural Genetics Institute)

  • Kien Tri Nguyen

    (International Center for Tropical Agriculture – Hanoi Hub, Agricultural Genetics Institute)

  • Christophe Béné

    (International Center for Tropical Agriculture (CIAT))

Abstract

Traditional wet markets are the main source of fresh food and the largest source of daily nutrient intake for citizens of Hanoi. Nevertheless, due to the lack of traceability and sales registration systems, food flows within these markets remain largely invisible. This makes it challenging to assess the impact of shocks, such as pandemics, on these markets. In this paper, we characterize the impact of COVID-19 by analyzing data from 25 Wi-Fi access points installed in five formally established wet markets. The study timeframe covers a pre-pandemic period from July 2019 to the end of the initial stage of the pandemic in November 2020. While providing free Internet access, data were continuously collected about devices in close vicinity to the access points. Based on this information, we tested five hypotheses about the number, frequency, time, and duration of visits to the markets as well as changes in inter-market activities. The results show that during the shock (February to mid-April 2020) and aftershock (mid-April to July 2020) periods, market actors significantly decreased the total number of market visits (-26% P

Suggested Citation

  • Louis Reymondin & Thibaud Vantalon & Huong Thi Mai Pham & Hieu Trung Le & Tuyen Thi Thanh Huynh & Ricardo Hernandez & Brice Even & Thang Cong Nguyen & Trong Van Phan & Kien Tri Nguyen & Christophe Bén, 2024. "Using free Wi-Fi to assess impact of COVID-19 pandemic on traditional wet markets in Hanoi," Food Security: The Science, Sociology and Economics of Food Production and Access to Food, Springer;The International Society for Plant Pathology, vol. 16(1), pages 223-241, February.
    • Handle: RePEc:spr:ssefpa:v:16:y:2024:i:1:d:10.1007_s12571-023-01417-w
    DOI: 10.1007/s12571-023-01417-w
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