VOLUNTEERS ARE URGENTLY NEEDED IN APRIL
Viruses and bacteria
The connection between infections and cancer is an important one. In developed countries, 7% of all cancer deaths are thought to be the result of viral and other infections.
|Infectious agent||Main types of cancer|
|Epstein-Barr virus (EBV)||nasopharynx, Hodgkin lymphoma, non-Hodgkin lymphoma|
|Helicobacter pylori (H. pylori)||Stomach|
|hepatitis B virus (HBV), hepatitis C virus (HCV)||Liver|
|human herpes virus 8 (HHV8)||Kaposi sarcoma, non-Hodgkin lymphoma|
|human immunodeficiency virus (HIV)||Hodgkin lymphoma, non-Hodgkin lymphoma, Kaposi sarcoma|
|human papillomavirus (HPV)||cervix, anus, vagina, vulva, penis, oropharynx|
|human T-cell leukemia/lymphoma virus type 1 (HTLV-1, human T-cell lymphotropic virus type 1)||adult T-cell leukemia/lymphoma (ATL/L)|
Although these infections may increase a person’s risk of developing cancer, many people with these infections do not develop cancer. Other factors also affect the risk of developing cancer.
Many of the viral infections associated with cancers cause clearly identifiable non-cancerous conditions (or precancers) before developing into cancer. Screening tests can help identify these signs – and if they are treated successfully – cancer may be prevented. Screening using the Pap test has reduced the incidence of cervical cancer because precancerous changes were detected and treated early.
The incidence of infection-related cancers in the US, Canada and in developing countries is increasing because of the AIDS virus.
Currently, there are vaccines for only HBV (hepatitis B virus) and HPV (human papillomavirus). Reducing the risk of infection remains the best way to help prevent some infection-related cancers. For example, using condoms may help prevent HBV and HPV infection.
Celebrating cancer survivors at Relay For Life
For cancer survivors, the Canadian Cancer Society provides a unique opportunity to celebrate their courage in the fight against cancer. During hundreds of Relay For Life events across the country, thousands of survivors join together for the Survivors’ Victory Lap.