🇨🇳 China, restaurant #Covid19 #superspread

Infection of 10 persons from 3 families who had eaten at separate tables in air-conditioned restaurant

“key factor for infection was the direction of the airflow”
🇸🇪 Sweden, hospital

#COVID19 detected in central ventilation systems, distant from patient areas, indicating it can be transported long distances

“increased infection indoors, as well as #superspread, could be explained by airborne transmission”
8/ https://www.nature.com/articles/s41598-020-76442-2
🇰🇷 South Korea, Call Centre #superspread

97 infected in open office

“virus can be exceptionally contagious in crowded offices.. despite considerable interaction between workers in the building #COVID19 spread limited almost exclusively to 11th floor” 9/ https://wwwnc.cdc.gov/eid/article/26/8/20-1274_article
🇰🇷 South Korea, coffee shop

27-person cluster linked to ceiling mounted air-conditioning in coffee outlet

“4 mask-wearing employees escaped infection... masks may not provide 100% protection, but there’s nothing out there that’s as effective” 10/ https://fortune.com/2020/08/25/covid-outbreak-starbucks-seoul-masks-employees/
🇫🇷 France, aircraft carrier (ship) #Covid19 #superspread

668 out of nearly 2,000 sailors infected

“Proximity & contagion make for dangerous shipmates. We have already seen how deadly virus can be in close confines of cruise ships” 11/ https://www.bbc.com/news/world-europe-52308073
🇮🇪Ireland, airplane #COVID19 #superspread

13 on flight (59 total)

“4 of flight cases were not seated next to any other positive case, had no contact in the transit lounge, wore face masks in-flight & were not ‘close contacts’ under ECDC definition” 13/ https://www.eurosurveillance.org/content/10.2807/1560-7917.ES.2020.25.42.2001624
🇻🇳 Vietnam, bar

19 infected

“Crowds in enclosed indoor settings with poor ventilation may be considered at high risk for transmission” /18 https://wwwnc.cdc.gov/eid/article/27/1/20-3480_article
🇰🇷South Korea, apartments #COVID19 #superspread

10 cases

“investigation found no other possible contact between the cases than airborne infection through a single air duct in bathroom” 23/
🇮🇪 Ireland, meat factories

1,500 cases* linked to 28 factories

“restrictions imposed due to large-scale outbreaks in meat factories are example of what can happen to a town or region due to clusters in high-risk sectors”

*Aug 2020, now 2,232 cases /45 https://www.thejournal.ie/1500-cases-liked-to-meat-plants-5189065-Aug2020/
🇳🇴 Norway, bus trip

40 cases including guide & driver

“Almost all passengers infected during 7 days together. Contact tracing resulting in around 100 cases”

“similar mutation in Australia, UK & other European countries” /46
🇳🇿New Zealand, hotel

3 cases, 212 staff, 192 current & 353 former guests tested

“quick wins by limiting recirculation, increasing air flows & filters.. increasing air dilutes risk of airborne infectious diseases being carried from room to room” 47/ https://www.stuff.co.nz/business/124075955/ventilation-expert-unsurprised-by-covid-infections-linked-to-quarantine
🇺🇸 USA, study group #Covid19

35 (of 92) attendees, 3 deaths, 26 in community

“6 foot rule is useful, but it’s possible to be infected at greater distances in static, indoor air or through air-conditioning system that doesn’t have high-grade filters” /50 https://elemental.medium.com/the-science-of-superspreaders-2ceed2b68834
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