Genomic surveillance of SARS-CoV-2 positive passengers on flights from China to Italy, December 2022

Author:

Novazzi Federica12,Giombini Emanuela3,Rueca Martina3,Baj Andreina12,Fabeni Lavinia3,Genoni Angelo12,Ferrante Francesca Drago1,Gramigna Giulia3,Gruber Cesare Ernesto Maria3,Boutahar Sara1,Minosse Claudia3,Butera Ornella3,Pasciuta Renee2,Focosi Daniele4,Colombo Alberto2,Antinori Andrea3,Girardi Enrico3,Vaia Francesco3,Maggi Fabrizio3

Affiliation:

1. Department of Medicine and Surgery, University of Insubria, Varese, Italy

2. Laboratory of Microbiology, ASST SetteLaghi, Varese, Italy

3. National Institute for Infectious Diseases “L. Spallanzani” - IRCCS, Rome, Italy

4. North-Western Tuscany Blood Bank, Pisa University Hospital, Pisa, Italy

Abstract

With numbers of COVID-19 cases having substantially increased at the end of 2022 in China, some countries have started or expanded testing and genomic surveillance of travellers. We report screening results in Italy in late December 2022 of 556 flight passengers in provenance from two Chinese provinces. Among these passengers, 126 (22.7%) tested SARS-CoV-2 positive. Whole genome sequencing of 61 passengers’ positive samples revealed Omicron variants, notably sub-lineages BA.5.2.48, BF.7.14 and BQ.1.1, in line with data released from China.

Publisher

European Centre for Disease Control and Prevention (ECDC)

Subject

Virology,Public Health, Environmental and Occupational Health,Epidemiology

Reference23 articles.

1. Covid-19: What can China learn from Hong Kong and Singapore about exiting zero covid?;Owens;BMJ,2022

2. European Centre for Disease Prevention and Control (ECDC). Impact of surge in China COVID-19 cases on epidemiological situation in EU/EEA. Stockholm: ECDC; 3 Jan 2023. Available from: https://www.ecdc.europa.eu/en/news-events/impact-surge-china-covid-19-cases

3. Estimating the transmission dynamics of Omicron in Beijing, November to December 2022.;Leung;medRxiv,2022

4. Centers for Disease Control and Prevention (CDC). CDC Announces Negative COVID-19 Test Requirement from Air Passengers Entering the United States from the People’s Republic of China. Atlanta: CDC; 28 Dec 2022. Available from: https://www.cdc.gov/media/releases/2022/p1228-COVID-china.html

5. Covid in China. US imposes Covid testing for visitors from China; 29 Dec 2022. [Accessed: 19 Dec 2022]. Available from: https://www.bbc.com/news/world-asia-china-64111492

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