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Updated Surveillance Metrics and History of the COVID-19 Pandemic (2020-2023) in East Asia and the Pacific Region: Longitudinal Trend Analysis

Updated Surveillance Metrics and History of the COVID-19 Pandemic (2020-2023) in East Asia and the Pacific Region: Longitudinal Trend Analysis

Arellano-Bond dynamic panel data estimates of the number of daily COVID-19 infections reported by country in East Asia and the Pacific region from April 28 to May 12, 2023a,b. a Wald test: χ26=730,275, P≤.001. b Sargan: χ2540=24, P=.99. c Contains estimates from the model in equation (1). Figure 1 plots the novel surveillance metrics over time, from the start of the pandemic up to the WHO declaration in May 2023.

Alexander L Lundberg, Alan G Soetikno, Scott A Wu, Egon Ozer, Sarah B Welch, Yingxuan Liu, Claudia Hawkins, Maryann Mason, Robert Murphy, Robert J Havey, Charles B Moss, Chad J Achenbach, Lori Ann Post

JMIR Public Health Surveill 2025;11:e53214

South Asia’s COVID-19 History and Surveillance: Updated Epidemiological Assessment

South Asia’s COVID-19 History and Surveillance: Updated Epidemiological Assessment

This study provides updates for the original study by Welch et al [6] for traditional surveillance data and dynamic panel estimates [40,41,46,47]. For the region of South Asia, the data comprised an unbalanced panel of 8 countries and territories, running from August 14, 2020, to May 12, 2023.

Lori A Post, Alan G Soetikno, Scott A Wu, Claudia Hawkins, Maryann Mason, Egon A Ozer, Robert L Murphy, Sarah B Welch, Yingxuan Liu, Robert J Havey, Charles B Moss, Chad J Achenbach, Alexander L Lundberg

JMIR Public Health Surveill 2024;10:e53331

Updated Surveillance Metrics and History of the COVID-19 Pandemic (2020-2023) in the Middle East and North Africa: Longitudinal Trend Analysis

Updated Surveillance Metrics and History of the COVID-19 Pandemic (2020-2023) in the Middle East and North Africa: Longitudinal Trend Analysis

Arellano-Bond dynamic panel data modeling from Equation (1) of the number of daily infections reported by country, April 28, 2023, through May 12, 2023.a,b a Wald test: χ26=12567.77, P b Sargan: χ2540=13, P≥.99. c Contains estimates from the model in Equation (1).

Alan G Soetikno, Alexander L Lundberg, Egon A Ozer, Scott A Wu, Sarah B Welch, Maryann Mason, Yingxuan Liu, Robert J Havey, Robert L Murphy, Claudia Hawkins, Charles B Moss, Lori Ann Post

JMIR Public Health Surveill 2024;10:e53219

Updated Surveillance Metrics and History of the COVID-19 Pandemic (2020-2023) in Latin America and the Caribbean: Longitudinal Trend Analysis

Updated Surveillance Metrics and History of the COVID-19 Pandemic (2020-2023) in Latin America and the Caribbean: Longitudinal Trend Analysis

The Wald test for regression was significant (P Arellano-Bond dynamic panel estimates of the number of daily COVID-19 infections reported by LACa countries from April 28 to May 12, 2023.b a LAC: Latin America and the Caribbean. b Wald test: χ26=951.65 (P≤2.22e-16); Sargan test: χ2540=37 (P=.99). Static surveillance metrics for the week of April 28, 2023, are provided in Table 2. The same metrics for the week of May 5, 2023, are provided in Table S1 in Multimedia Appendix 1.

Lori Ann Post, Scott A Wu, Alan G Soetikno, Egon A Ozer, Yingxuan Liu, Sarah B Welch, Claudia Hawkins, Charles B Moss, Robert L Murphy, Maryann Mason, Robert J Havey, Alexander L Lundberg

JMIR Public Health Surveill 2024;10:e44398

Overlapping Delta and Omicron Outbreaks During the COVID-19 Pandemic: Dynamic Panel Data Estimates

Overlapping Delta and Omicron Outbreaks During the COVID-19 Pandemic: Dynamic Panel Data Estimates

Omicron, or B.1.1.529, the latest SARS-Co V-2 variant of concern (VOC), was first sequenced in Botswana in early November 2021 [1]. South Africa reported Omicron to the World Health Organization (WHO) on November 24, 2021, and the WHO designated it as a VOC on November 26, 2021 [2,3]. Early reports of Omicron from South Africa alarmed infectious disease scientists due to both its rapid spread in the population and the high degree of molecular divergence in the spike protein [4,5].

Alexander L Lundberg, Ramon Lorenzo-Redondo, Judd F Hultquist, Claudia A Hawkins, Egon A Ozer, Sarah B Welch, P V Vara Prasad, Chad J Achenbach, Janine I White, James F Oehmke, Robert L Murphy, Robert J Havey, Lori A Post

JMIR Public Health Surveill 2022;8(6):e37377