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[EN] IATA: Apenas 44 casos de transmissão à bordo de aeronaves em mais de 1.2 bi pax transportados


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Passou batido nesse feriadão, mas é mais uma notícia interessante que por algum motivo ninguém da mídia mainstream no Brasil quis dar destaque. Será que a paralisia do setor aéreo, assim como dos demais setores, atende apenas ao interesse político de alguns? Vai saber..

Fonte: https://www.airlineratings.com/news/new-research-uncovers-just-44-cases-flight-covid-19-transmission/

NEW RESEARCH UNCOVERS JUST 44 CASES OF INFLIGHT COVID-19 TRANSMISSION

by AirlineRatings editors October 09, 2020
  
 
COVID-19 Image: US Food and Drug Administration.

The risk of contracting COVID-19 on an aircraft has been likened to the chances of being struck by lightning after new research uncovered as few as 44 cases of inflight transmission among 1.2 billion passengers who traveled since the start of 2020.

The tally — published by the International Air Transport Association and including confirmed, probable and potential cases — translates to one transmission for every 27 million travelers.

“Nothing is completely risk-free,’’ said IATA director general Alexandre de Juniac.

“But with just 44 published cases of potential inflight COVID-19 transmission among 1.2 billion travelers, the risk of contracting the virus on board appears to be in the same category as being struck by lightning.”

READ: COVID fails to crush travel desire.

Tracking down inflight COVID-19 transmissions is notoriously difficult and IATA medical advisor Dr David Powell recognized that the findings may underestimate the number of cases.

“But even if 90 percent of the cases were unreported, it would be one case for every 2.7 million travelers,’’ Dr Powell said.

“We think these figures are extremely reassuring.

“Furthermore, the vast majority of published cases occurred before the wearing of face coverings inflight became widespread.”

The airline lobby group pointed to a joint publication by Airbus, Boeing and Embraer of separate computational fluid dynamics (CFD) research conducted on aircraft as an explanation of why the numbers might be so low.

The manufacturers found aircraft airflow systems, High-Efficiency Particulate Air (HEPA) filters, the natural barrier of the seatback, the downward flow of air, and high rates of air exchange efficiently reduced the risk of disease transmission on board in normal times.

They concluded the addition of mask-wearing added “a further and significant extra layer of protection” which made being seated in close proximity in an aircraft cabin safer than most other indoor environments.

Specific aircraft characteristics  identified as contributing to the low incidence of inflight COVID-19 transmission included:

  • Limited face-to-face interactions as passengers face forward and move about very little
  • The effect of the seat-back acting as a physical barrier to air movement from one row to another
  • The minimization of forward-aft flow of air, with a segmented flow design which is directed generally downward from ceiling to floor
  • The high rate of fresh air coming into the cabin. Air is exchanged 20-30 times per hour on board most aircraft, which compares very favorably with the average office space (average 2-3 times per hour) or schools (average 10-15 times per hour).
  • The use of HEPA filters which have more than 99.9% bacteria/virus removal efficiency rate ensuring that the air supply entering the cabin is not a pathway for introducing microbes.

IATA  said its data collection, and the results of the separate simulations, aligned with the low numbers reported in a recently published peer-reviewed study by Freedman and Wilder-Smith in the Journal of Travel Medicine.

“ Although there is no way to establish an exact tally of possible flight-associated cases, IATA’s outreach to airlines and public health authorities combined with a thorough review of available literature has not yielded any indication that onboard transmission is in any way common or widespread,’’ it said.

“Further, the Freedman/Wilder-Smith study points to the efficacy of mask-wearing in further reducing risk.”

One of the few cases where COVID transmission has been identified is on a Qantas A330-200 carrying infected cruise ship passengers between Sydney and Perth in March.

A study by West Australian researchers and published by the US Centers for Disease Control found at least eight COVID-19 cases — and possibly as many as 11 — were contracted on board.

The flight with 38 business class and 213 economy passengers included travelers who had disembarked from cruise ships Ruby Princess, Sun Princess and Ovation of the Seas.

Eleven passengers, including nine from the Ruby Princess and one from Ovation of the Seas, were considered infectious during the flight with a coronavirus strain not previously seen in Australia.

A further 11  passengers, none of whom had traveled on the cruise ship, developed that strain of the disease between 48 hours and 14 days after the flight.

They had all been in the same cabin as the infected passengers but the researchers could not exclude the possibility that three might have been exposed before or after their journey.

Qantas medical director Ian Hosegood told Australian media that the incident was the only confirmed example of transmission on a Qantas flight and airline had not been told it was carrying cruise ship passengers.

“Had we known, they would have been stopped from traveling,” he said.

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38 minutes ago, PB26 said:

A IATA está doidinha para aviação voltar ao normal e recuperar suas receitas.

Quem não está ?

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39 minutes ago, PB26 said:

A IATA está doidinha para aviação voltar ao normal e recuperar suas receitas.

A IATA e todo mundo que depende da aviação pra colocar comida na mesa.

Mas vontades por vontades, os fatos estão aí e só um dos lados dessa história parece preocupado em analisar tais fatos. O pessoal da seita da terra parada prefere fechar os olhos, tapar os ouvidos, e cantar "lalala".

Edited by diasfly
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https://www.forbes.com/sites/suzannerowankelleher/2020/09/19/covid-19-can-spread-on-long-airline-flights-per-two-new-studies/#3a6e011b76a9

 

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Num voo da Vietnan de Londres para Hanoi, um pax de J contaminou 15 pessoas. Se tiver controle no embarque, uso de máscara, e higienização constante de mãos, etc, é seguro. Mas filtro HEPA por si só não vai segurar espirro/tosse de uma pessoa contaminada.

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Bem, na laranja, por herdarmos muitos ex-Varig, devemos dispor da equipe de tripulação mais envelhecida na aviação brasileira. Logo, teoricamente, a mais exposta à doença.

Até agora, não tivemos nenhum caso grave. A média de contaminados é bem baixa e a equipe tem voado com muita confiança.

Por exemplo, do fretamento do Flamengo para Guayaquil, ambas tripulações, testaram negativo, cumpriram quarentena pós voos e vida seguiu.

Desconfio que o pânico tem potencial de matar mais gente do que a própria doença.

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32 minutes ago, Antonio (CENI) said:

Bem, na laranja, por herdarmos muitos ex-Varig, devemos dispor da equipe de tripulação mais envelhecida na aviação brasileira. Logo, teoricamente, a mais exposta à doença.

Até agora, não tivemos nenhum caso grave. A média de contaminados é bem baixa e a equipe tem voado com muita confiança.

Por exemplo, do fretamento do Flamengo para Guayaquil, ambas tripulações, testaram negativo, cumpriram quarentena pós voos e vida seguiu.

Desconfio que o pânico tem potencial de matar mais gente do que a própria doença.

Eu já tô desconfiado que ganhei algum grau de síndrome do pânico por conta da política de prevenção a doença...

Edited by Eric Breno
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On 13/10/2020 at 19:54, diasfly said:

Passou batido nesse feriadão, mas é mais uma notícia interessante que por algum motivo ninguém da mídia mainstream no Brasil quis dar destaque. Será que a paralisia do setor aéreo, assim como dos demais setores, atende apenas ao interesse político de alguns? Vai saber..

Fonte: https://www.airlineratings.com/news/new-research-uncovers-just-44-cases-flight-covid-19-transmission/

NEW RESEARCH UNCOVERS JUST 44 CASES OF INFLIGHT COVID-19 TRANSMISSION

by AirlineRatings editors October 09, 2020
  
 
COVID-19 Image: US Food and Drug Administration.

The risk of contracting COVID-19 on an aircraft has been likened to the chances of being struck by lightning after new research uncovered as few as 44 cases of inflight transmission among 1.2 billion passengers who traveled since the start of 2020.

The tally — published by the International Air Transport Association and including confirmed, probable and potential cases — translates to one transmission for every 27 million travelers.

“Nothing is completely risk-free,’’ said IATA director general Alexandre de Juniac.

“But with just 44 published cases of potential inflight COVID-19 transmission among 1.2 billion travelers, the risk of contracting the virus on board appears to be in the same category as being struck by lightning.”

READ: COVID fails to crush travel desire.

Tracking down inflight COVID-19 transmissions is notoriously difficult and IATA medical advisor Dr David Powell recognized that the findings may underestimate the number of cases.

“But even if 90 percent of the cases were unreported, it would be one case for every 2.7 million travelers,’’ Dr Powell said.

“We think these figures are extremely reassuring.

“Furthermore, the vast majority of published cases occurred before the wearing of face coverings inflight became widespread.”

The airline lobby group pointed to a joint publication by Airbus, Boeing and Embraer of separate computational fluid dynamics (CFD) research conducted on aircraft as an explanation of why the numbers might be so low.

The manufacturers found aircraft airflow systems, High-Efficiency Particulate Air (HEPA) filters, the natural barrier of the seatback, the downward flow of air, and high rates of air exchange efficiently reduced the risk of disease transmission on board in normal times.

They concluded the addition of mask-wearing added “a further and significant extra layer of protection” which made being seated in close proximity in an aircraft cabin safer than most other indoor environments.

Specific aircraft characteristics  identified as contributing to the low incidence of inflight COVID-19 transmission included:

  • Limited face-to-face interactions as passengers face forward and move about very little
  • The effect of the seat-back acting as a physical barrier to air movement from one row to another
  • The minimization of forward-aft flow of air, with a segmented flow design which is directed generally downward from ceiling to floor
  • The high rate of fresh air coming into the cabin. Air is exchanged 20-30 times per hour on board most aircraft, which compares very favorably with the average office space (average 2-3 times per hour) or schools (average 10-15 times per hour).
  • The use of HEPA filters which have more than 99.9% bacteria/virus removal efficiency rate ensuring that the air supply entering the cabin is not a pathway for introducing microbes.

IATA  said its data collection, and the results of the separate simulations, aligned with the low numbers reported in a recently published peer-reviewed study by Freedman and Wilder-Smith in the Journal of Travel Medicine.

“ Although there is no way to establish an exact tally of possible flight-associated cases, IATA’s outreach to airlines and public health authorities combined with a thorough review of available literature has not yielded any indication that onboard transmission is in any way common or widespread,’’ it said.

“Further, the Freedman/Wilder-Smith study points to the efficacy of mask-wearing in further reducing risk.”

One of the few cases where COVID transmission has been identified is on a Qantas A330-200 carrying infected cruise ship passengers between Sydney and Perth in March.

A study by West Australian researchers and published by the US Centers for Disease Control found at least eight COVID-19 cases — and possibly as many as 11 — were contracted on board.

The flight with 38 business class and 213 economy passengers included travelers who had disembarked from cruise ships Ruby Princess, Sun Princess and Ovation of the Seas.

Eleven passengers, including nine from the Ruby Princess and one from Ovation of the Seas, were considered infectious during the flight with a coronavirus strain not previously seen in Australia.

A further 11  passengers, none of whom had traveled on the cruise ship, developed that strain of the disease between 48 hours and 14 days after the flight.

They had all been in the same cabin as the infected passengers but the researchers could not exclude the possibility that three might have been exposed before or after their journey.

Qantas medical director Ian Hosegood told Australian media that the incident was the only confirmed example of transmission on a Qantas flight and airline had not been told it was carrying cruise ship passengers.

“Had we known, they would have been stopped from traveling,” he said.

Número insignificante para o montante transportado.

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tenho voado com frequencia (como pax) e durante o voo em si fico tranquilo. Há problemas fora da aeronave, mas que sao os mesmos que acontecem no supermercado, shopping etc. Neste último domingo voei BEL-GRU com a Gol, foi o meu primeiro voo que no desembarque alguns tentaram desrespeitar o desembarque por fileiras, mas a tripulação imediatamente agiu e o desembarque foi feito seguindo o protocolo. durante todo o voo (3h 20m) os comissários passaram e pediram para que as pessoas com mascaras no queixo ou sem elas, usassem. apesar da cara feia de alguns pax, eles continuaram pedindo e só saiam após a pessoa colocar novamente. Já no aeroporto... BEL estava um formigueiro de gente com vários voos naquele horário e apesar dos avisos de distanciamento nas cadeiras por exemplo, poucos respeitam. muitos sem máscara, outros muitos tiram para tossir (???!?), para falar ao telefone, etc. Já em GRU, igualmente lotado (pousamos as 20:50) vi inclusive funcionários da limpeza e manutenção com máscara no queixo. depois no desembarque, na área do uber, novamente muita gente aglomerada sem máscara. enfim, nao deixarei de voar, como disse tenho feito vários voos nesse periodo. a minha preocupação não é o avião, mas sim a parte em terra dos voos (aeroportos). Ou seja, o risco me parece igual ao supermercado, shopping, etc...

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3 hours ago, Guilherme.penna.carvalho said:
Quote

"O artigo não detalha qual foi a companhia aérea ou de onde o voo saiu."

 

Curioso

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Se cruzarmos as informações (49 =17% de LF, 7h30 de duração), fecha em AA, EI, EY, ET, QR, TK e UA, todas com frotas na configuração próxima de 290 assentos, porém a TK (A333), EI (A333) e ET (B789) são mais próximas, porém a TK não usa A333 em DUB (especulando que o voo tem final lá), resta EI e ET, ambas tem rotas que chegam a 07h30: DUB-ADD, DUB-JFK, DUB-Costa Leste.

 

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Bingo! Foi o A350 da Qatar, bate com o mapa que fizeram de propagação do vírus e a capacidade da aeronave citada no artigo:

"The flight into Ireland was 7.5 h long and had a passenger occupancy of 17% (49/283 seats) with 12 crew"
 

?width=630&version=5244759

 

Além disso tem outro dado: passageiros de três continentes, ou seja, potencialmente uma empresa ME3 pela localização geográfica.

 

O artigo:

https://www.eurosurveillance.org/docserver/fulltext/eurosurveillance/25/42/eurosurv-25-42-3.pdf?expires=1603913138&id=id&accname=guest&checksum=6AF4112CD8DAC352C71772C377ACDF34

Será que o Qatar vai fazer teste de narina em quem embarcou? :cutuca:

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Belo trabalho investigativo A345! Não da pra entender pq omitiram uma informação tão relevante.

Meus 2 cents nesse caso vão pra hipótese de o voo estar tão vazio que provavelmente as pessoas relaxaram completamente nos cuidados básicos para evitar transmissão de doenças. Não só em relação ao uso de máscaras, mas situações mais expostas como usar o banheiro (que com certeza todo mundo usou num voo que dura uma eternidade) pra mim influenciam mais do que estar sentado perto ou longe de alguém infectado.

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Meus prezados

Estudo aponta que risco de transmissão do COVID-19 em aviões é baixo quando passageiros usam máscaras

Eduardo Beni 

EUA – Divulgado no dia 15 de outubro, um estudo do Departamento de Defesa dos Estados Unidos da América concluiu que o risco de contrair COVID-19 em um voo comercial lotado é baixo, ou seja, uma pessoa teria que ficar sentada ao lado de um passageiro infectado por pelo menos 54 horas para receber uma dose perigosa do vírus pelo ar.

A pesquisa foi liderada e financiada pelo Comando de Transporte dos EUA, que opera o Patriot Express, um programa que usa aviões comerciais para transportar militares e suas famílias. O comando queria determinar os riscos de fazer isso durante a pandemia.

O estudo foi realizado a bordo dos jatos Boeing 777 e 767. Os pesquisadores colocaram um manequim, com e sem máscara em diferentes lugares dos aviões e liberaram partículas fluorescentes projetadas para imitar o vírus. A pesquisa realizada em seis meses envolveu 300 testes durante 38 horas de voo e 45 horas de testes em solo.

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Estudo aponta que risco de transmissão do COVID-19 em aviões é “praticamente inexistente” quando passageiros usam máscaras

Isso foi feito liberando partículas em toda a cabine por seção, cada uma com 42 sensores representando outros passageiros que poderiam entrar em contato com elas. Cada teste liberou 180 milhões de partículas, número de partículas que seriam produzidas por milhares de tosses.

Os pesquisadores concluíram que se os passageiros usarem máscaras cirúrgicas continuamente, muito pouco do vírus se espalhará, devido à forma como o ar circula e é filtrado nos aviões. Cerca de 99,99% das partículas foram filtradas para fora da cabine em 6 minutos devido à rápida circulação de ar, ventilação de ar descendente e os sistemas de filtragem da aeronave.

O vírus foi removido pelos sistemas de filtragem de ar do avião 15 vezes mais rápido do que em uma casa e cinco ou seis vezes mais rápido do que o recomendado para salas de cirurgia de hospitais e quartos de isolamento de pacientes.

A United Airlines, que doou o tempo de voo para o estudo com o manequim, foi menos cautelosa do que os funcionários do Departamento de Defesa, saudando a nova pesquisa como um “marco”.

“Suas chances de exposição ao COVID-19 em uma aeronave da United são quase inexistentes, mesmo que seu voo esteja lotado”, disse Toby Enqvist, diretor de atendimento ao cliente da companhia aérea, em um comunicado.

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Estudo aponta que risco de transmissão do COVID-19 em aviões é "praticamente inexistente" quando passageiros usam máscaras

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Estudo aponta que risco de transmissão do COVID-19 em aviões é "praticamente inexistente" quando passageiros usam máscaras

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Estudo aponta que risco de transmissão do COVID-19 em aviões é "praticamente inexistente" quando passageiros usam máscaras 

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Estudo aponta que risco de transmissão do COVID-19 em aviões é "praticamente inexistente" quando passageiros usam máscaras

Fonte: blog Resgate Aeromédico 26 out 2020

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