PAUL WHITEHILL / SCIENCE PHOTO LIBRARY PAUL WHITEHILL / SCIENCE PHOTO LIBRARY
Taking a temperature. His body temperature can be read using the scale running along the thermometer. A body temperature above 37 degrees Celsius would indicate that the boy has a fever (pyrexia), although temperatures vary with time and from person to person. Most fevers are caused by bacterial or viral infections. Symptoms include shivering, sweating, hot skin and thirst.
Model release available. Property release not required.