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@sueinmn
You mentioned that “ Yes, masking helps with most respiratory illnesses, even MAC, I believe. “

I thought I had read that MAC was not contagious as a respiratory disease?

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Replies to "@sueinmn You mentioned that “ Yes, masking helps with most respiratory illnesses, even MAC, I believe...."

@jnmy A large enough aerosol concentration of MAC (such as from soil particles or water vapor) can be infectious when inhaled in quantity to vulnerable individuals. That is different from being contagious, which means being passed from person to person via close contact.

So I wear a mask in crowds to prevent getting contagious diseases/viruses that can affect my lungs. I wear a mask when gardening and in very dusty situations to avoid overexposure to NTM particles.