Infectious Viral Disease Flashcards
(92 cards)
period of contagiousness of Rubeola
3 days before up to 4-6 days onset of rash
Pathognomonic sign of measles
warthin finkeldey giant cells:exanthem
Incubation period of measles
8-12 days high grade fever
Clinical features of measles
cough, coryza and conjuctivitis with photophobia
In measles this sign appers 1-4 days prior to the onset of rash that can be seen at the level of the premolars
Koplik spot
Mannner of appearance of rash in measles
cephalocaudal which starts with forehead, behind the ear, upper neck and confluence in the torso
Describe the rash of measles
maculopapular rash
most common complication of measle
otitis media
Vitamin recommendation for child with measles and the dose
VItamin A supplementation single dose
200,000 >1y/o
100,000 6mos-1y/o
50,000 <6mos
what is the most common cause of death in patients with measles
Pneumonia
A chronic complication of measles, a delayed onset with fatal outcome, which affects the CNS
Subacute sclerosing Panencephalitis
What virus causes measles?
paramyxovirus
What virus affects Rubella
togaviridae
This is a 3 day virus that can usually transmitted transplacentally which causes fetal damage
Rubella
Viral shredding of rubella
nasopharynx begins at 10 days after infection and detected upto 2 weeks following the onset of rash
What it the period of highest communicability of rubella
5 days before to 6 days after the appearance of rash
what is the incubation period of rubella
14-21 days
patient with low grade fever, sorethroat , red eyes with or without pain, and lymphadenopathy
rubella
Characteristic of rash(Rubella)
non distinctive, centrifugal, no desquamation that last for 3 days
This is a petechial hemorrhage on the soft palate which coincide with the onset of rash
forchheimer spots
What are the complications of rubella
thrombocytopenia, arthritis, encephalitis
Babies born with congenital rubella can shred up to how many days/months
1 year via respiratory secretions
what are the timing of vaccine (MMR) for rubella
2 doses
1st dose:12-15mos
2nd dose:4-6 years
What is the etiology of VZV?
herpes virus