Detection of COVID-19 Decompensation

Inclusion Criteria: Obtained signed and dated informed consent form Patient in the University of Illinois Health System Patient agrees to comply with all study procedures and availability for the duration of the study Male or female, aged \> 18 years of age Patient diagnosed with COVID-19 (positive SARS CoV2 test) Patient agrees to refrain from swimming or taking baths (any activity that submerges the biosensor in water for any period). Showering is okay. Exclusion Criteria: Known allergic reactions to components of the hydrocolloid gel adhesives Subject has cognitive or physical limitations that, in the opinion of the investigator, limits the subject's ability to fully follow study procedures Cognitive ability, in the opinion of the investigator, that limits the patient's ability to use the biosensor and smartphone consistent with study requirements. Does not speak or read English or Spanish