"Two studies in 1998 from the National Institute for Occupational Safety or NIOSH and Health, one in Tampa and one in an Omaha post office, reported no direct link between health concerns and postal dust. "
I guess they need people that are being funded to research sarcoidosis to go and conduct a study of those filters. That's part of the problem too, not enough funding.
This is important because the more these stories pop up the more attention, translate to more money for research and development of medicine and treatment.
I'm not comparing this disease to cancer or aids but this is how those diseases got progress in treatment over the years, example less women die of breast cancer than 5 years ago due to better and more efficient screening.