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  2. Transmission of COVID-19 - Wikipedia

    en.wikipedia.org/wiki/Transmission_of_COVID-19

    Researchers noted that these results differ significantly from many earlier studies, which reported an increased long-term risk of various autoimmune conditions following infection with earlier COVID-19 variants. [115] Those studies, however, did not consider the potential protective effects of COVID-19 vaccination, including booster doses.

  3. COVID-19 pandemic - Wikipedia

    en.wikipedia.org/wiki/COVID-19_pandemic

    The virus was confirmed to have spread to Brazil on 25 February 2020, [377] when a man from São Paulo who had travelled to Italy tested positive for the virus. [378] The disease had spread to every federative unit of Brazil by 21 March. On 19 June 2020, the country reported its one millionth case and nearly 49,000 reported deaths.

  4. Airborne transmission - Wikipedia

    en.wikipedia.org/wiki/Airborne_transmission

    Circumstances influencing the spread of droplets containing infectious particles can include pH, salinity, wind, air pollution, and solar radiation as well as human behavior. [27] Airborne infections usually land in the respiratory system, with the agent present in aerosols (infectious particles < 5 μm in diameter). [28]

  5. The WHO overturned dogma on how airborne diseases spread ...

    www.aol.com/news/overturned-dogma-airborne...

    Airborne viruses travel much like cigarette smoke, he explained. The scent will be strongest beside a smoker, but those farther away will inhale more and more smoke if they remain in the room ...

  6. Ontario shuts schools, indoor dining, gyms amid infections

    www.aol.com/news/ontario-shuts-schools...

    All schools in Canada’s most populous province will be shut down and move to online learning because of a record number of coronavirus infections fueled by the ultra-contagious omicron variant ...

  7. JN.1 accounts for over 90% of US COVID cases: Know ... - AOL

    www.aol.com/news/covid-variant-spreading-fast-us...

    The JN.1 variant may be "intensifying the spread of COVID-19 this winter," the CDC said in an update on Jan. 5. Waning immunity, low COVID-19 vaccine uptake, and holiday gatherings likely also ...

  8. COVID-19 pandemic in Toronto - Wikipedia

    en.wikipedia.org/wiki/COVID-19_pandemic_in_Toronto

    The measures followed a continued uptick in new cases in hotspots in the province of Ontario. [78] On October 19, outbreaks were announced at St. Joseph's Health Centre and Toronto Western Hospital. [79] On the same day, Ontario and Toronto government representatives recommended against trick-or-treating for Halloween. [80]

  9. Variants of SARS-CoV-2 - Wikipedia

    en.wikipedia.org/wiki/Variants_of_SARS-CoV-2

    The term variant of concern (VOC) for SARS-CoV-2, which causes COVID-19, is a category used for variants of the virus where mutations in their spike protein receptor binding domain (RBD) substantially increase binding affinity (e.g., N501Y) in RBD-hACE2 complex (genetic data), while also being linked to rapid spread in human populations ...

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    related to: airborne infections usually affect the spread of corona variant in ontario