A wellness diagnostic platform installed on a vehicle to identify potential passengers with evident symptoms of a contagious illness is described. The wellness diagnostic platform includes a wellness monitoring unit and a boarding confirmation unit. The wellness monitoring unit includes a camera and/or one or more thermal sensors. The camera may capture physical characteristics of the potential passenger to determine health and the thermal sensors can measure a temperature of the potential passenger prior to boarding the vehicle. The boarding confirmation unit is configured to receive at least a display object identifying a diagnostic result computed by the wellness monitoring unit that the potential passenger is (i) advised to board the vehicle when a temperature of the potential passenger is equal to or below a prescribed temperature threshold or (ii) advised to refrain from boarding the vehicle when the temperature of the potential passenger exceeds prescribed temperature threshold.