VIRAL INFECTIONS

VIRAL INFECTIONS - Herpes simplex c. Chronic infections 1)....

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
VIRAL INFECTIONS A. Acute infections: 1. Lysis host cells 2. Short duration – days, sometimes weeks 3. Self limiting 4. Recovery immunity 5. Ex.: mumps, measles, influenza B. Persistent infections 1. Viruses continually present 2. Types a. Late complications 1). Follow acute infections 2). Occur several weeks, years after active infection 3). Few viruses present 4). Ex. Subacute sclerosing panencephalitis – following measles b. Latent infections (Recurrent Infections) 1). Lysogenic (latent) proviruses reactivated 2). Viruses not detected until activated 3). Ex.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 2
Background image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Herpes simplex c. Chronic infections 1). Usually low grade symptoms (some acute) 2). Infections prolonged 3). Viruses continually present 4). Ex. Hepatitis B or C d. Slow infections (1). Develop very slowly, over long period time (years) (2). Few symptoms (3). Viruses gradually increase in number (4). Frequently lethal (5). Ex. HIV (AIDS) C. Prions 1. Protein molecules, no nucleic acids 2. Infections develop very slowly, usually fatal 3. Ex. Transmissible spongiform encephalopathies (mad cow disease)...
View Full Document

This note was uploaded on 01/23/2012 for the course MCB MCB2010 taught by Professor Smith during the Fall '09 term at Broward College.

Page1 / 3

VIRAL INFECTIONS - Herpes simplex c. Chronic infections 1)....

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online