"Our findings suggest that environmental contamination leading to SARS-CoV-2 transmission is unlikely to occur in real-life conditions, provided that standard cleaning procedures and precautions are enforced."
Hand hygiene and washing high-contact surfaces is still clearly important. Some may over-do it a bit (e.g. "hygiene theatre")...we just cant ignore bundled public health measures that also include masking indoors, physical distancing, etc.
2nd example: On a 10 hour flight, 1 person (also reported in business class) likely transmitted to 16 others, out of 217 passenger & crew. Proximity a risk.
Once again: "Face masks were neither recommended nor widely used on airplanes in early March"
Could there be something about business class that facilitates transmission (e.g. seating arrangement/air flow, lax mask use)? Is this a real issue vs reporting bias? Not sure.
Other examples of rather limited #COVID19 transmission on planes here 👇
TIME on train:
-Attack rate with 1-hour co-travel time is 0.25%, and with 7 hours 0.38%
PROXIMITY to case:
-Closer to index case = higher risk (shocker).
-3.5% attack rate if sitting next to case
-Attack rate drops significantly if >2 rows apart
This is the gold standard of how to effectively conduct contact tracing, especially in stigmatized populations (see below) bit.ly/2ZQpnJC
"...prejudice against homosexuality, gay men in South Korea...discrimination & stigmatization...often unwilling to reveal their sexual identity. Thus, the Seoul Metropolitan Government consulted sexual-minority groups to discuss ways to encourage testing among gay men."👍👍👍👍
"To conduct contact tracing for this outbreak, we used multiple forms of advanced information technology, including location data from mobile devices, credit card payment history,...
2/ Nobody is arguing that masks don't work at an individual level. They help reduce the probability of transmitting infection - we've known this long before #COVID19.
Proximity and duration of exposure to an infected person are key factors, especially in indoor settings...
3/ ...so put a mask on when going indoors in a public setting, especially one where you can't physically distance yourself from others, & especially in areas of #COVID19 transmission. Pretty straight forward.
But mandates for masking? Right now? In Canada? Not now. Maybe later.
1. "... the virus can be tracked all over the floor, as indicated by the 100% rate of positivity from the floor in the pharmacy, where there were no patients."
2. "half of the samples from the soles of the ICU medical staff shoes tested positive."
3/
Air samples tested:
-In ICU, positive test results in "14 samples positive of 40 samples tested
-2 samples positive of 16 samples tested on hospital wards
-"wearing non-medical masks, even if you have no symptoms, is an additional measure that you can take to protect others around you in situations where physical distancing is difficult to maintain."