Here are some informative links about Covid-19:
• Orange County COVID-19 Testing Network
• Covid-19 Testing and Screening
• Pre-Testing Enrollment
• Good News, Reinfection Unlikely
• Test SpO2 and Detect Coronavirus COVID-19 Seriousness with an Oximeter
• INSTRUCTIONAL VIDEO: Use of a Pulse Oximeter in the COVID-19 Pandemic
• Check this out - Fingertip Pulse Oximeter Blood Oxygen Saturation Monitor with silicon cover, batteries and lanyard (Mystic Black)