Mircobiology Ch. 11

acute

rapid and self-limiting

persistent

long term infection. continual production of pathogen

latent

enter and become dormant for a period of time

transforming

enter and induce rapid growth of the infected cell. can lead to cancer development

cytopathic viruses

cause visible damage to the host cellular tissue

non-cytopathic viruses

do not cause visible damage to the host tissue cellular tissue

m cells

sample intestinal contents to generate protective repsonses

ex: salmonella

viral meningitis

virus infection of the tissue surrounding the brian

viral encephalitis

virus infection of the brain

latent infection

life long infection with dormant states; evades by hiding and not producing infectious agent

chronic infection

long term infection with constant production of the infectious agent

targeted immunosuppression

suppresion of the responses that would lead to their survival

bystander effect

pathogen X turns off the immune response that kills pathogen X and pathogen Y. pathogen Y is able to grow

antigenic variation

antigens can change

antigenic shift

large sudden change in the antigen

antigen drift

gradual mutation of the virus

oncogene

if this is “on” rapid division of abnormal cell soccurs leading to cancer