Spread of SARS-CoV-2 across international borders by infected travelers has been well documented ( 5, 6) however, evidence and in-depth assessment of the risk for transmission from infected passengers to other passengers or crew members during the course of a flight (in-flight transmission) are limited. Air travel is contributing to the extent and speed of the pandemic spread through the movement of infected persons ( 2– 4) consequently, in March, many countries either completely halted or substantially reduced air travel. Guidelines for preventing SARS-CoV-2 infection among air passengers should consider individual passengers’ risk for infection, the number of passengers traveling, and flight duration.ĭuring the first 6 months of 2020, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) spread to almost all countries and infected ✴ million persons worldwide ( 1). In-flight transmission that probably originated from 1 symptomatic passenger caused a large cluster of cases during a long flight. We found no strong evidence supporting alternative transmission scenarios. Seating proximity was strongly associated with increased infection risk (risk ratio 7.3, 95% CI 1.2–46.2). Among the 16 persons in whom SARS-CoV-2 infection was detected, 12 (75%) were passengers seated in business class along with the only symptomatic person (attack rate 62%). We traced 217 passengers and crew to their final destinations and interviewed, tested, and quarantined them. Affected persons were passengers, crew, and their close contacts. "CDC's recognition of airborne transmission would mean that that policies should emphasize wearing masks at all times in public buildings and ensuring good ventilation and filtration to control the pandemic.To assess the role of in-flight transmission of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), we investigated a cluster of cases among passengers on a 10-hour commercial flight. "There is an overwhelming amount of scientific evidence that aerosols are an important transmission route for COVID-19," said Linsey Marr, a professor of civil and environmenal engineering at Virginia Tech in a written statement about the issue. "The new wording that was published acknowledged that inhalation of aerosols (or microscopic droplets) is the main way that the virus spreads. Aerosols 'main way virus spreads,' expert saysīut one expert in airborne transmission of viruses said the removal of aerosol guidance from the CDC website "doesn't change the fact that transmission by aerosols is happening and that we know how to address it." The WHO has not changed its policy on aerosol transmission of the coronavirus, an official said on Monday. The World Health Organization (WHO) has said it is monitoring "emerging evidence" of possible airborne transmission. Presently, the agency's guidance says the virus mainly spreads from person-to-person through respiratory droplets, which can land in the mouth or nose of people nearby. Why saliva testing for COVID-19 in Canada won't be ending the long lineups any time soon.Trump administration shelves expert guidelines on reopening U.S.Hospitalizations, deaths will follow Ontario's COVID-19 surge, but how many remains unclear.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |