Sachin Walls
Airport coronavirus screenings have been implemented to limit the probability of infected cases entering other countries or regions. The screenings aim to find travellers with the virus based on where they are coming from and any COVID-19 symptoms they exhibit. Thermal scanning, for example, can identify passengers with a fever (high external body temperature). However, the effectiveness of these screenings has been questioned, with some reports suggesting they only detected one case per 85,000 evaluated travellers.
| Characteristics | Values |
|---|---|
| Effectiveness | According to a CDC report, airport coronavirus screenings have not been as effective as hoped. Screenings only detected one case per 85,000 evaluated travellers. |
| Screening type | Thermal scanning, which can identify passengers with a fever. |
| Screening goal | To find travellers with the virus based on where they were coming from and any COVID-19 symptoms they exhibited. |
| Screening history | Airport screening has been previously implemented during the 2003 SARS epidemic and 2009 influenza A(H1N1) pandemic. |
What You'll Learn
- Thermal scanning can identify passengers with a fever, allowing those exhibiting symptoms to be tested before boarding
- Exit screening is more effective for longer flights, as the probability of developing symptoms increases with flight time
- Airport screening has been implemented during previous epidemics to limit the probability of infected cases entering other countries
- The effectiveness of entry screening is largely dependent on the effectiveness of exit screening
- Airport coronavirus screenings have not been as effective as hoped, detecting one case per 85,000 evaluated travellers, according to the CDC
Thermal scanning can identify passengers with a fever, allowing those exhibiting symptoms to be tested before boarding
Thermal scanning is one way that coronavirus is detected at airports. This method identifies passengers with a fever, allowing those exhibiting symptoms to be tested before boarding. However, it is not always effective, as some infected travellers may not have a fever or other symptoms. According to a CDC report, airport coronavirus screenings from January to September detected only one case per 85,000 evaluated travellers.
Despite limited evidence for its effectiveness, airport screening has been previously implemented during other epidemics and pandemics, such as the 2003 SARS epidemic and 2009 influenza A(H1N1) pandemic, to limit the probability of infected cases entering other countries or regions. The effectiveness of entry screening is largely dependent on the effectiveness of exit screening, and the probability of detecting infected travellers increases with flight time.
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Exit screening is more effective for longer flights, as the probability of developing symptoms increases with flight time
Airport screening for coronavirus has been implemented to limit the probability of infected cases entering other countries or regions. However, airport coronavirus screenings haven’t been nearly as effective at detecting COVID-19 cases as experts hoped. For example, according to a CDC report, screenings only detected one case per 85,000 evaluated travellers.
Thermal scanning, which can identify passengers with a fever, allows for passengers exhibiting symptoms of coronavirus infection to be tested before they board a plane. However, it is estimated that 46% of infected travellers would not be detected, depending on the incubation period, sensitivity of exit and entry screening, and proportion of asymptomatic cases.
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Airport screening has been implemented during previous epidemics to limit the probability of infected cases entering other countries
Thermal scanning, which can identify passengers with a fever, allows for passengers exhibiting symptoms of COVID-19 infection to be tested before they board a plane. Despite limited evidence for its effectiveness, airport screening has been previously implemented during the 2003 SARS epidemic and 2009 influenza A(H1N1) pandemic to limit the spread of infection across borders.
The effectiveness of entry screening is largely dependent on the effectiveness of exit screening. Longer flight times increase the probability of developing symptoms during the flight, making exit screening more effective for longer flights. In a baseline scenario, it was estimated that 46% of infected travellers would not be detected, depending on the incubation period, sensitivity of exit and entry screening, and proportion of asymptomatic cases.
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The effectiveness of entry screening is largely dependent on the effectiveness of exit screening
Thermal scanning, which can identify passengers with a fever, allows for passengers exhibiting symptoms of infection to be tested before they board a plane. However, according to a CDC report, airport coronavirus screenings haven’t been nearly as effective at detecting COVID-19 cases as experts hoped. The screenings only wound up detecting one case per 85,000 evaluated travellers.
Under baseline assumptions, entry screening could detect 53 infected travellers instead of nine if no exit screening was in place. The probability of developing symptoms during the flight increases with flight time, and hence exit screening is more effective for longer flights.
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Airport coronavirus screenings have not been as effective as hoped, detecting one case per 85,000 evaluated travellers, according to the CDC
Thermal scanning, which can identify passengers with a fever, allows for passengers exhibiting symptoms of COVID-19 infection to be tested before they board a plane. Despite this, the effectiveness of entry screening is largely dependent on the effectiveness of the exit screening in place. The probability of developing symptoms during the flight increases with flight time, so exit screening is more effective for longer flights.
Airport screening has been previously implemented during the 2003 SARS epidemic and 2009 influenza A(H1N1) pandemic to limit the probability of infected cases entering other countries or regions. However, there is limited evidence for its effectiveness. In the case of COVID-19, it is estimated that 46% of infected travellers would not be detected, depending on the incubation period, sensitivity of exit and entry screening, and proportion of asymptomatic cases.
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Frequently asked questions
Airport screenings have not been as effective at detecting COVID-19 cases as experts hoped. According to a CDC report, screenings only detected one case per 85,000 evaluated travellers.
Exit and entry screenings are used to detect infected travellers. Exit screenings are more effective for longer flights, as the probability of developing symptoms during the flight increases with flight time.
Thermal scanning identifies passengers with a fever (high external body temperature), allowing those exhibiting symptoms of coronavirus to be tested before they board a plane.
Thermal scanning is unlikely to detect a sufficient proportion of infected travellers to avoid the entry of infected travellers. In one study, it was estimated that 46% of infected travellers would not be detected.
