young woman doctor nurse in protective mask measuring temperature with non-contact infrared thermometer digital

bacteria prevent thermometer temperature non contact clinic checking young woman doctor nurse protective mask measuring infrared digital electronic scanner coronavirus medical measures covid19 diagnostic measurement clinical diagnosis symptom contagious female controller screening controlling fever health distance examining inspect risk flu virus hospital specialist illness danger influenza ill degree instrument isometric monitoring laser medic inspection infection pandemic patient sick body physician protect pneumonia device practitioner sickness precaution preventive protection quarantine medicine respiratory sterile healthy safety person wireless scan disease screen sensor