What four factors determine the DNA families?
Type of DNA they contain
The presence or absence of an envelope
Size
The host cells they attack
What are the stages of lesions in poxvirus infections?
Lesions begin as flat, red area (macule),Become raised sores (papule),Lesions fill with fluid (vesicle),Progress to pus-filled vesicle (pustule or pocks),Pustules dry up, crust over, leave a scar
What was the first disease to be eradicated?
Smallpox is the first human disease to be eradicated
What is the main sign of poxvirus infections?
Lesions on face
What is the most prevalent DNA virus?
Herpesviridae
Where is the site of latency for the herpes virus?
Remain inactive inside infected cells
Describe the epidemiology of HHV 1 & HHV 2.
1- Above the waist
2- Below the waist
How are HHV 1 & HHV 2 contracted?
Transmission occurs through close bodily contact
What conditions are caused by HHV 3?
chicken pox, and shingles
Who typically gets chicken pox? Shingles?
Chicken pox- children
Shingles- Adults
Discuss the epidemiology of VZV infections. Where is it's site of latency?
...
How is HHV 4 (EBV) transmitted? Where does infection occur? Where is it's site of latency?
Transmission usually occurs via saliva.Initially infect epithelium of pharynx and parotid salivary glands.Virus enters the bloodstream and invades B lymphocytes.
What virus causes infectious mononucleosis?
HHV4
What virus is Burkitt's lymphoma associated with?
Epstein-Barr Virus
What is the other name of HHV 5? What happens to the infected cells?
Cytomegalovirus.Infected cells become enlarged
How is HHV 5 transmitted?
Usually occurs via sexual intercourse
What condition is caused by HHV 6? How is the condition characterized?
Roseolovirus. Characterized by pink rash on face, neck, trunk, and thighs
What is a papilloma (besides a wart)?
Cancer
How are papilloma viral infections transmitted?
Sex
What conditions may be caused by Adenoviridae?
Respiratory infections
What does HBV cause? List the various symptoms of HBV.
hepatitis
How is HBV transmitted?
Transmitted when infected body fluids contact breaks in the skin or mucous membranes
What does parvovirus cause?
Causes erythema infectious (5th disease)