Epstein-Barr Virus (EBV) is a common virus that might be linked to certain types of cancer. This study is looking at people in Southern China to see if they have high levels of EBV antibodies (proteins made by the immune system to fight EBV) and if those levels are related to different types of cancer. Researchers want to know if EBV might be causing more cancer cases than we already know about, especially in Southern China.
- The study follows participants for a long time to track their health.
- Participants must live in Zhongshan or Wuzhou City and have no current cancer.
- People with serious heart, liver, or kidney issues cannot join.