Clinical Performance of Masimo INVSENSOR00048

Inclusion Criteria: * Afebrile subjects of all ages, or febrile subjects of all ages who meet the following criteria for screening temperature: * sublingual temperature ≥ 37.5°C (99.5°F), * rectal temperature ≥ 38.0°C (100.4°F), * or axillary temperature ≥ 37.2°C (99.0°F) * If subject is \< 18 years old, parents or legally authorized representatives (LAR) have provided informed consent and have signed all necessary related documents Exclusion Criteria: * Subjects with medical conditions such as inflammation at the measuring site or taking medications e.g. barbiturates, thyroid preparations, antipsychotics, or immunization within prior 7 days, which might skew clinical accuracy validation results such as, per the investigator's judgement * Subjects unable to provide informed consent or assent, as appropriate * Subjects with conditions at or around site of sensor placement or skin abnormalities affecting the sensor placement area such as psoriasis, eczema, angioma, scar tissue, burn, fungal infection, substantial skin breakdown that would prevent monitoring of physiological parameters during the study * Subjects with known allergies to adhesive material used in medical equipment * Subjects with medical conditions which, in the judgment of the investigator, renders them inappropriate for participation in this study * Excluded at the Principal Investigator's discretion