This topic is quite relevant, but it seems to me that modern requirements are very tight. Yes, masks do help prevent the spread of infection. However, these do not have to be surgical masks. It is quite expensive economically. My daughter is in college and she partnered with a writing service to do research on this topic. These guys helped her great with this -
https://writemyessayquick.net/ The point of the study is that conventional fabric homemade masks can provide primary protection as much as surgical options. However, homemade masks are inexpensive and available to any segment of the population. This essay cited the experiences of Thailand and Bangladesh as examples. These are places where people wear masks almost all the time and this is good for limiting the spread of infection.