Martin Tay, Benjamin Lee, Muhammad Hafiz Ismail, Jerald Yam, Dzulkhairul Maliki, Karina Yew-Hoong Gin, Sae-Rom Chae, Zheng Jie Marc Ho, Yee Leong Teoh, Lee Ching Ng, Judith Chui Ching Wong
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引用次数: 0
Abstract
Background: As global travel resumed in coronavirus disease 2019 (COVID-19) endemicity, the potential of aircraft wastewater monitoring to provide early warning of disease trends for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) variants and other infectious diseases, particularly at international air travel hubs, was recognized. We therefore assessed and compared the feasibility of testing wastewater from inbound aircraft and airport terminals for 18 pathogens including SARS-CoV-2 in Singapore, a popular travel hub in Asia.
Methods: Wastewater samples collected from inbound medium- and long-haul flights and airport terminals were tested for SARS-CoV-2. Next Generation Sequencing was carried out on positive samples to identify SARS-CoV-2 variants. Airport and aircraft samples were further tested for 17 other pathogens through quantitative reverse transcription polymerase chain reaction.
Results: The proportion of SARS-CoV-2-positive samples and the average virus load was higher for wastewater samples from aircraft as compared with airport terminals. Cross-correlation analyses indicated that viral load trends from airport wastewater led local COVID-19 case trends by 2-5 days. A total of 10 variants (44 sub-lineages) were successfully identified from aircraft wastewater and airport terminals, and four variants of interest and one variant under monitoring were detected in aircraft and airport wastewater 18-31 days prior to detection in local clinical cases. The detection of five respiratory and four enteric viruses in aircraft wastewater samples further underscores the potential to expand aircraft wastewater to monitoring pathogens beyond SARS-CoV-2.
Conclusion: Our findings demonstrate the feasibility of aircraft wastewater testing for monitoring infectious diseases threats, potentially detecting signals before clinical cases are reported. The triangulation of similar datapoints from aircraft wastewater of international travel nodes could therefore serve as a useful early warning system for global health threats.
期刊介绍：
The Journal of Travel Medicine is a publication that focuses on travel medicine and its intersection with other disciplines. It publishes cutting-edge research, consensus papers, policy papers, and expert reviews. The journal is affiliated with the Asia Pacific Travel Health Society.
The journal's main areas of interest include the prevention and management of travel-associated infections, non-communicable diseases, vaccines, malaria prevention and treatment, multi-drug resistant pathogens, and surveillance on all individuals crossing international borders.
The Journal of Travel Medicine is indexed in multiple major indexing services, including Adis International Ltd., CABI, EBSCOhost, Elsevier BV, Gale, Journal Watch Infectious Diseases (Online), MetaPress, National Library of Medicine, OCLC, Ovid, ProQuest, Thomson Reuters, and the U.S. National Library of Medicine.
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