Contagious Cancer - The Oncologist

Of interest: note reference to organ transplant (not new news but under-recognized??)

"INTRODUCTION 
In the cancer clinic, physicians and other oncology caregivers are
occasionally asked whether cancer can ever be passed along from
one individual to another. One example is the wife who asks whether
she could ever "catch" cancer from her husband with prostate cancer.
Although the answer to that one is no, the question of a man "catching"
cancer from a partner with cervical cancer is not unrealistic since
various strains of human papilloma virus are known causes of cervical
cancer as well as penile cancer. Pathogens including certain viruses,
bacteria, and parasites represent major causes of cancer in developing
parts of the world. In fact, an estimated 1.5 million cases per year or
15% of all cancers worldwide can be attributed to infectious
etiologies, mostly due to viral infections...."cont'd