caption: The image shows a poster with text and images that explain what is contact tracing, an alternative to prevent long-term lockdowns or overwhelmed health systems. The poster has a blue background with a white border and a white circle in the center with a red line through it. The text on the poster reads "Contact Tracing: An Alternative to Prevent Long-Term Lockdowns or Overwhelmed Health Systems" in bold black font. There are also several images of a person with their arms outstretched, as if they are trying to figure out what contact tracing is.