Exploring Patterns and Trends in COVID-19 Exports from China, Italy, and Iran
Soliman, A. T.; McHenry, M. L.; Luo, G.; Dailey, B.; Chen, T.; Letterio, J. J.
Show abstract
This paper investigates COVID-19 exported cases by country and the time it takes between entry until case confirmation for the exported cases using publicly available data. We report that the average days from entry to confirmation is 7.7, 5.0 and 4.7 days for travelers from China, Italy, and Iran respectively. Approximately, one-third of all exported cases were confirmed within 3 days of entry suggesting these travelers were mildly symptomatic or symptomatic in arrival. We also found that earlier exported cases from each country had a longer time between entry to confirmation by an average of 3 days compared to later exports. Based upon our data, reported exported cases from South Korea were far fewer in comparison to those from China, Italy and Iran. Therefore, we suggest that careful monitoring of likely symptomatic travelers and better public awareness may lead to faster confirmation as well as reduced transmission of COVID-19 pandemic.
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