For those commenting that it's just common cold and about herd immunity, I think we should not miss out on overload on our medical system. This is what happened in India, due to high number of cases (even if mild) the medical infrastructure completely crashed under the load and lead to far more deaths than just a flu could have caused. Wear mask and stay indoors if possible
> Wear mask and stay indoors if possible For all we know about transmission, you should stay outdoors, if possible. If this isn't possible, maximize ventilation. Limit contacts in general. Masks have a very modest impact on transmission.
> Wear mask and stay (in your) home.
As in no contact > contact outside > contact inside
Also assuming you are not in tight crowds outside or "outside but bad ventilated" areas (e.g. tends):
longer contact outside without mask > longer contact inside with mask
Not because masks don't work but because being outside has such a strong effect (assuming you are not in a crowded area, or some area which wrt. ventilation is only pseudo-outside or you stick very close to other persons outside of a crowd, or you insist to always be direct facing a person instead of being beside that person etc.)
Or in other words beside outside being good ventilated you also have often less chances to directly cough at the face of a person, as you e.g. walk besides a person when taking a walk and activities being less crowded and as such it's easier to cough in a direction where no one is close by.
It also means that there are good reasons to ware masks if you are in a crowded area outside, it's just most "outside activities" are not in very crowded areas and hence outside infection rates are way lower. We are also less outside then inside etc.
Or at least that is how I understand it.