And, from what I understand, there was no indication that a person was contagious before they presented with symptoms. Since masks are designed to protect others, it make sense that they weren’t recommended. Now with information that you are contagious up to 48 hours before you present with symptom, masks/face coverings make sense for everyone.
This is a NEW virus. Information is going to change. Some newer recommendations say the virus can travel 3m / 27 feet, not just the 6ft we’ve been told. As information becomes known, recommendations will change.