inclusion criteria: 1. health care worker (hcw) at the hospital who work on a "full time" basis during the study period. for the purposes of the study, "health care workers" are physicians, nurses, nurse practitioners, physician assistants, respiratory therapists, x-ray technicians, social workers and support staff (including but not limited to house-keeping, and porters). 2. age ≥18 years. 3. ability to communicate with study staff in english

inclusion criteria: 1. health care worker (hcw) at the hospital who work on a "full time" basis during the study period. for the purposes of the study, "health care workers" are physicians, nurses, nurse practitioners, physician assistants, respiratory therapists, x-ray technicians, social workers and support staff (including but not limited to house-keeping, and porters). 2. age ≥18 years. 3. ability to communicate with study staff in english

inclusion criteria: health care worker (hcw) at the hospital who work on a "full time" basis during the study period. for the purposes of the study, "health care workers" are physicians, nurses, nurse practitioners, physician assistants, respiratory therapists, x-ray technicians, social workers and support staff (including but not limited to house-keeping, and porters). age ≥18 years. ability to communicate with study staff in english

inclusion criteria: health care worker (hcw) at the hospital who work on a "full time" basis during the study period. for the purposes of the study, "health care workers" are physicians, nurses, nurse practitioners, physician assistants, respiratory therapists, x-ray technicians, social workers and support staff (including but not limited to house-keeping, and porters). age ≥18 years. ability to communicate with study staff in english

inclusion criteria: 1. health care worker (hcw) at the hospital who work on a "full time" basis during the study period. for the purposes of the study, "health care workers" are physicians, nurses, nurse practitioners, physician assistants, respiratory therapists, x-ray technicians, social workers and support staff (including but not limited to house-keeping, and porters). 2. age ≥18 years. 3. ability to communicate with study staff in english

inclusion criteria: 1. health care worker (hcw) at the hospital who work on a "full time" basis during the study period. for the purposes of the study, "health care workers" are physicians, nurses, nurse practitioners, physician assistants, respiratory therapists, x-ray technicians, social workers and support staff (including but not limited to house-keeping, and porters). 2. age ≥18 years. 3. ability to communicate with study staff in english