Table-1.

Examples of SARS-CoV-2 spread through the air travel by travelers.

Sl. No.	COVID-19 spread by air travel (name of the countries)	Year of spread	Remark	Reference
1.	Wuhan, China to Thailand	January 2020	Researchers reported two cases of COVID-19 which was confirmed with genome sequencing and RT-PCR	[28]
2.	UK to Vietnam	March 2020	Transmission and increased infection risk of COVID-19 performed by epidemiological investigations	[29]
3.	Italy to South Korea	March 2020	Asymptomatic transmission of COVID-19 on an aircraft is an inadequate condition	[30]
4.	China to Greece	January 2020	Increased risk of in-flight transmission of COVID-19 causing virus for possibility of airborne spread, transmissibility includes the long incubation period	[31]
5.	Wuhan, China to Singapore	January 2020	The asymptomatic infection that was overlooked by simply symptomatic surveillance, whereas the actual COVID-19 infection might be higher.	[32]
6.	Israel to Greece	March 2020	Probable in-flight transmission of COVID-19 due to the close contact with the index case in Greece	[31]
7.	Central African Republic to France	March 2020	The easiest mode of SARS-CoV-2 transmission by travel together with their human carriers, and spreading of the virus on board	[33]
8.	Israel to Germany	March 2020	From the throat swab sample of passenger the presence of SARS-CoV-2 confirmed by RT-PCR	[34]