Quotes from the news wire:
We're not going to eradicate this coronavirus like we've done with smallpox ; it is something that I think is going to settle into a more seasonal pattern, like the flu and colds... but right now, because it's novel and so many people are not immune to it, it's really ripping through the population. But I think five years from now, we will have much greater immunity either through vaccination or natural infection.
We need universal masking again. Because that... reduces the amount of virus that's in the air around us [ and ] helps protect you individually from breathing virus in the air around you, people can be spreading virus without any symptoms. So, we need this really until we can get the number of cases down.
Things are tough right now with Delta because we've heard how transmissible it is and how people who are vaccinated can carry high loads of virus in their noses. But I think we can be reassured that the vaccines still provide excellent protection against hospitalization, serious cases of illness... We know what works and, [ even ] with a more transmissible virus, those things still work : the masks, the distancing, ventilation, filtration and avoiding crowds, we just need to make sure we are even more vigilant about them.
If you are fully vaccinated, you are much better protected than you were before. But with Delta circulating... the vaccine is not a get out of jail free card ; we still should be taking precautions like avoiding crowds... We still need to be doing these other precautions in order to get past this current wave.
The combination of high air change rates and high-quality filters... will greatly reduce the amount of virus that can build up in the air. Thus, it is unlikely that people will be exposed to elevated levels of virus in cabins and public indoor spaces, if this is the case, then the biggest risk comes from being in close proximity, within the exhaled respiratory plume of an infected individual.
These types of experiments are useful to help visualize how droplets travel in air and how effective masks can be, especially for the general public, however, we need to supplement these types of experiments with rigorous, quantitative studies that can tell us how well different masks work, especially for the sizes of droplets that are not evident with the methods used here.