Мобильный 1 Add news
March 2010
April 2010
May 2010June 2010July 2010
August 2010
September 2010October 2010
November 2010
December 2010
January 2011
February 2011March 2011April 2011May 2011June 2011July 2011August 2011September 2011October 2011November 2011December 2011January 2012February 2012March 2012April 2012May 2012June 2012July 2012August 2012September 2012October 2012November 2012December 2012January 2013February 2013March 2013April 2013May 2013June 2013July 2013August 2013September 2013October 2013November 2013December 2013January 2014February 2014March 2014April 2014May 2014June 2014July 2014August 2014September 2014October 2014November 2014December 2014January 2015February 2015March 2015April 2015May 2015June 2015July 2015August 2015September 2015October 2015November 2015December 2015January 2016February 2016March 2016April 2016May 2016June 2016July 2016August 2016September 2016October 2016November 2016December 2016January 2017February 2017March 2017April 2017May 2017June 2017July 2017August 2017September 2017October 2017November 2017December 2017January 2018February 2018March 2018April 2018May 2018June 2018July 2018August 2018September 2018October 2018November 2018December 2018January 2019February 2019March 2019April 2019May 2019June 2019July 2019August 2019September 2019October 2019November 2019December 2019January 2020February 2020March 2020April 2020May 2020June 2020July 2020August 2020September 2020October 2020November 2020December 2020January 2021February 2021March 2021April 2021May 2021June 2021July 2021August 2021September 2021October 2021November 2021December 2021January 2022
News Every Day |

COVID: Travelers infected one another across hallway, research shows

COVID: Travelers infected one another across hallway, research shows

A traveler isolated for Covid-19 at a quarantine facility in New Zealand managed to infect three others across a hallway, researchers reported Thursday.

Closed-circuit camera footage, genetic testing and careful contact tracing show that the only conceivable way the virus could have passed from one room to another was in air that leaked out when both doors were briefly opened, the researchers said.

It’s a demonstration of how the virus can spread — and of how well vaccines can work. The one person who escaped infection was fully vaccinated and never tested positive, despite having stayed in the same room as four other infected people for weeks on end.

Both sets of travelers arrived in New Zealand in mid-July, as the Delta variant of the coronavirus was sweeping the world. One single traveler from the Philippines tested positive during quarantine and was placed into a converted hotel called a managed isolation facility. A group of five people traveling from the United Arab Emirates also arrived, were quarantined and then one member of the group tested positive, so they were placed in the same facility, across the corridor from the first traveler.

No one was allowed to leave either room, and the doors were opened only for nurse checks and food deliveries — but the doors were not supposed to be opened at the same time. Nonetheless, it did happen, according to Andrew Fox-Lewis of the Counties Manukau District Health Board in Auckland, New Zealand, and colleagues. “Security camera footage revealed four brief episodes of simultaneous door opening during person A’s infectious period,” the team wrote. Each time lasted just a few seconds.

Three more people in the group of five became infected, but genetic testing indicated that their infected companion was not the source. It was the traveler from the Philippines — their virus had the same genetic fingerprints.

Airborne transmission across the hallway is the most plausible explanation, the researchers said. “These findings are of global importance for coronavirus disease public health interventions and infection control practices,” Fox-Lewis and colleagues wrote in the journal Emerging Infectious Diseases.

“Person A was found to have not left the room at any point during their infectious period … and only left the room for exercise after the infectious period, from July 28 onward (after persons B and C had already tested positive),” the team added. It’s possible that this traveler breathed infectious virus into the air of their room, and the air puffed out into and across the hallway when the door was open.

The New Zealand authorities had tried to prevent this with extractor fans and air cleaners, but the system may have failed when the doors opened. “No ventilation systems connected separate rooms. Rooms had external windows that could be freely opened by occupants,” the researchers noted.

“Our findings support the hypothesis that during episodes of simultaneous door-opening, airborne particles in the room of person A rapidly diffused down a concentration gradient, across the corridor, and into the rooms of group BCDEF,” the team wrote.

One person escaped infection: the vaccinated traveler. “Despite sharing a room with four other persons with PCR-confirmed SARS-CoV-2 infection, person F never tested positive for SARS-CoV-2 by (PCR test), testing negative on July 14, 18, 21, 27, 29, 31, and August 8, 14, 16, and 23,” the team wrote.

“Person F had received two doses of the Pfizer-BioNTech COVID-19 vaccine, but no other members of the travel group had been vaccinated.”

It’s not the first time researchers have documented infection via hotel corridor. Coronaviruses can be carried on tiny airborne particles called aerosols, and they infect people when they are breathed in.

Earlier in December, a team in Hong Kong reported that one fully vaccinated traveler infected with the Omicron variant infected another staying in a quarantine hotel there.

“Case-patient A arrived in Hong Kong from South Africa on November 11, 2021, and case-patient B arrived in Hong Kong from Canada on November 10, 2021. Both case-patients had previously received two vaccine doses,” Leo Poon of the University of Hong Kong and colleagues wrote, also in the journal Emerging Infectious Diseases.

“On arrival at the Hong Kong airport, both case-patients stayed in the same quarantine hotel and had rooms across the corridor from each other on the same floor.”

Hong Kong requires many international travelers to quarantine in designated hotels for three weeks.

“No items were shared between rooms, and other persons did not enter either room,” the team wrote.

“The only time the two quarantined persons opened their respective doors was to collect food that was placed immediately outside each room door. The only other time they might have opened their doors would be for (PCR coronavirus tests), which were conducted in three-day intervals. However, because these two case-patients arrived one day apart, it is unlikely that they would be tested on the same day,” they added.

Genomic sequencing made it clear that the two travelers were infected by almost identical versions of the same Omicron virus, the researchers said. Closed-circuit camera footage showed that both had stayed in their rooms, as required.

“Airborne transmission across the corridor is the most probable mode of transmission,” they concluded. “None of the 12 persons staying in nearby rooms on the same floor during the study or related hotel staff have tested positive in repeated tests for SARS-CoV-2.”

The-CNN-Wire™ & © 2021 Cable News Network, Inc., a WarnerMedia Company. All rights reserved.









Read also

A 22-year-old NYPD officer was fatally shot and another critically injured while responding to a call about a family dispute

Prince Andrew and Sarah Ferguson seen driving in Windsor as he faces losing his security over Virginia Giuffre sex case

Video: Bruno Fernandes dives to the floor in emotive show of theatrics for Man United vs West Ham


News, articles, comments, with a minute-by-minute update, now on Today24.pro

News Every Day

Topeka Tropics hold tryouts friday in Landon Arena

Today24.pro — latest news 24/7. You can add your news instantly now — here


News Every Day

Topeka Tropics hold tryouts friday in Landon Arena



Sports today


Новости тенниса
Australian Open

Симона Халеп: Мне очень нравится в Австралии. Вероятно, это помогает отлично играть



Спорт в России и мире

СМИ: скандальный хоккеист Буше просил интимные фото у несовершеннолетних - Новости Спорт, 21.01.2022


Загрузка...

All sports news today




Загрузка...

Sports in Russia today

Валерий Карпин назвал злом лимит на легионеров в РПЛ


Новости России

Game News

E-promo Новый Год


Russian.city


Мода

ЛИМИТИРОВАННАЯ КОЛЛЕКЦИЯ ВДОХНОВЛЯЮЩИХ АРОМАТОВ MARY KAY ДЛЯ НЕЕ И ДЛЯ НЕГО


Губернаторы России
Ольга Бузова

Группа «Стрелки» на подтанцовке и черная икра: Бузова с размахом отметила день рождения


Ученый Болков допустил появление новых мутаций коронавируса из-за животных

МИД раскритиковал сообщение о просьбе Китая придержать вторжение на Украину

Доктор Руженцова допустила тяжелое течение заболевания при заражении штаммом «Омикрон»

Bloomberg: Китай попросил Путина не нападать на Украину во время Олимпиады


YouTube заблокировал клип Моргенштерна об отъезде из России

Умер ресторанный музыкант Марти Робертс, выступавший с Фрэнком Синатрой

Юрист Лухин: скандал из-за маски в самолете может обернуться для Волочковой уголовной статьей

Игровой ютубер -Night набрал 15 млн просмотров на YouTube.


Аслан Карацев закончил участие в Открытом чемпионате Австралии по теннису

Аслан Карацев вышел в третий круг Открытого чемпионата Австралии по теннису

Тарпищев — о поражении Карацева на АО-2022: Аслан не умеет играть по счёту

Австралия. Элина Свитолина уступила Виктории Азаренко




Петербургская художница сделала зимнюю серию этикеток для #Selfie «Фанагории»

«Мы с ними не сотрудничали»: менеджер Тодоренко о претензиях писательницы из Петербурга

Валерий Карпин назвал злом лимит на легионеров в РПЛ

«Россети Тюмень» внедрили новые системы контроля гололедных образований на ЛЭП


Украинские военные пообещали нанести армии России «роковой удар»

Посол Украины в Лондоне Пристайко: Киев может пригласить британских военных в случае угрозы

Стало известно, когда пройдет встреча «нормандской четверки» в Париже

Египет рассказал о предложенном Эфиопии сценарии запуска плотины Хидасэ



Путин в России и мире







Персональные новости
Russian.city

Александр Градский

«МК»: автомобиль ограбивших вдову Градского преступников обнаружили брошенным в Москве



News Every Day

Dolomites, Italy: Brenner Pass and Reifenstein Castle - Rick Steves Europe Travel Guide




Friends of Today24


Загрузка...
Музыкальные новости
"Воскресенье " Олег Митяев



Персональные новости
Близкий друг Путина миллиардер Пугачев. Вся правда о Путине, его семье и деньгах. В гостях у Гордона (2021)

Навальный об уволенном за пост священнике (2021)

Slava Marlow – суперуспех и депрессия в 21 год / вДудь (2021)

Обнаглевшие дети путинской элиты (2021)

Дайте собакам мяса (новый звук) -Владимир Высоцкий

Группа "Рождество" - песня "Так хочется жить!" (Видео с концерта в Киеве группы "РОЖДЕСТВО" в 2011 году в Доме офицеров)

Adriano Celentano Любимая песня Челентано (высочайшая энергетика) talentTV

Moscow.media