HomeNewsWorldSingapore quarantines SIA passenger from Johannesburg after two onward travellers test Omicron positive

Singapore quarantines SIA passenger from Johannesburg after two onward travellers test Omicron positive

The traveller, along with six others, had disembarked from SIA’s SQ481 which departed from Johannesburg on November 27 and arrived at Singapore’s Changi Airport on the same day.

November 30, 2021 / 07:23 IST
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Singapore has quarantined one traveller as a close contact of two passengers on Singapore Airlines’ (SIA) Johannesburg flight who had tested positive for coronavirus variant Omicron on arrival in Sydney, local media reported on Tuesday.

The traveller, along with six others, had disembarked from SIA’s SQ481 which departed from Johannesburg on November 27 and arrived at Singapore’s Changi Airport on the same day.

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The six other passengers who disembarked in Singapore are on a 10-day stay-home notice at a dedicated facility where they will be tested for the coronavirus, the Ministry of Health (MOH) said on Monday night.

The pilots and the crew who operated the flight will self-isolate and get tested for COVID-19, an SIA spokesperson told Channel News Asia. It stressed that most of the travellers on the flight had remained in the transit area at Changi Airport until their departure on flight SQ211 bound for Sydney, Australia on November 28, and that they had not entered Singapore or visited other areas in the airport.

COVID-19 Vaccine
Frequently Asked Questions

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How does a vaccine work?

A vaccine works by mimicking a natural infection. A vaccine not only induces immune response to protect people from any future COVID-19 infection, but also helps quickly build herd immunity to put an end to the pandemic. Herd immunity occurs when a sufficient percentage of a population becomes immune to a disease, making the spread of disease from person to person unlikely. The good news is that SARS-CoV-2 virus has been fairly stable, which increases the viability of a vaccine.

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There are broadly four types of vaccine — one, a vaccine based on the whole virus (this could be either inactivated, or an attenuated [weakened] virus vaccine); two, a non-replicating viral vector vaccine that uses a benign virus as vector that carries the antigen of SARS-CoV; three, nucleic-acid vaccines that have genetic material like DNA and RNA of antigens like spike protein given to a person, helping human cells decode genetic material and produce the vaccine; and four, protein subunit vaccine wherein the recombinant proteins of SARS-COV-2 along with an adjuvant (booster) is given as a vaccine.

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Vaccine development is a long, complex process. Unlike drugs that are given to people with a diseased, vaccines are given to healthy people and also vulnerable sections such as children, pregnant women and the elderly. So rigorous tests are compulsory. History says that the fastest time it took to develop a vaccine is five years, but it usually takes double or sometimes triple that time.
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