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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.