View source for Infections associated with malignancy

== Viruses ==

* [[EBV]]: lymphoma, nasopharyngeal cancer
* [[Hepatitis B]]: [[hepatocellular carcinoma]]
* [[Hepatitis C]]: [[hepatocellular carcinoma]]
* [[HHV-8]]: [[Kaposi sarcoma]]
* [[Human immunodeficiency virus|HIV-1]]: [[Kaposi sarcoma]], [[lymphoma]], [[cervical cancer]], [[anal cancer]]
* [[HPV]]: vaginal, vulvar, penile, and head-and-neck cancer
* [[HLTV|HLTV-1]]: T cell cancers

== Bacteria ==

* [[Helicobacter pylori]]: stomach cancer, esophageal cancer, gastric mucosa-associated lymphoid tissue lymphoma
* Bacteremia with many bacteria is associated with new diagnosis of '''colorectal cancer''' within 1 year[[CiteRef::kwong2018as][[CiteRef::justesen2022ba]]
** [[Clostridium]] species (OR 17) and in particular [[Clostridium septicum]] (OR 17) and [[Clostridium perfringens]] (OR 2)
** [[Gemella morbillorum]] (OR 15)
** [[Fusobacterium nucleatum]] (OR 5 to 7)
** [[Streptococcus bovis group]] (OR 9), mostly from [[Streptococcus gallolyticus]] (OR 6) subspecies ''gallolyticus''
** [[Bacteroides]] species (OR 6), including [[Bacteroides fragilis]] (OR 4) and [[Bacteroides ovatus]] (OR 20)
** Gram-positive anaerobic cocci (OR 11), including [[Peptostreptococcus]] species (OR 3)

== Parasites ==

* Liver fluke ([[Opisthorchis viverrini]] and [[Clonorchis sinensis]]): [[cholangiocarcinoma]] and [[hepatocellular carcinoma]]
* [[Schistosoma haematobium]]: [[bladder cancer]]

[[Category:Oncology]]
[[Category:Infectious diseases]]