This is a very good study that highlights transmission of #COVID19 is NOT air-borne.. but instead by droplets, in fact exacerbated by air conditioner flow in an enclosed restaurant.
wwwnc.cdc.gov/eid/article/26…
wwwnc.cdc.gov/eid/article/26…
Let's take a closer look at this study of how #COVID19 is transmitted within a restaurant, enclosed with air-conditioning.. It started with a family from Wuhan.. which soon led to 3 family clusters.. 1/n
This family from Wuhan sat at Table A.. with other families, at Table B and Table C respectively..
Soon after, out of total 91 persons in that restaurant (83 customers & 8 staff), only 10 were positive #COVID19 ; from tables A, B & C only. ALL other 81 were negative. 2/n
Soon after, out of total 91 persons in that restaurant (83 customers & 8 staff), only 10 were positive #COVID19 ; from tables A, B & C only. ALL other 81 were negative. 2/n
By looking at position of tables.. which were under direct flow of air-conditioned .. droplet alone, which generally travels less than 1m, may be added with strong air flow to send droplets till table B .. 3/n
Finally by symptoms.. a lot points to pre-symptomatic transmission from Patient A1 who was asymptomatic at that lunch in the restaurant..
And also the conclusion of droplet transmission, prompted by air flow from air conditioner.. 4/n
And also the conclusion of droplet transmission, prompted by air flow from air conditioner.. 4/n
@threadreaderapp unroll
