Exam 4 Measles, Mumps, Rubella Flashcards
What does myxo mean?
Mucus
Measles is also known as:
Rubeola
Name the 4 paramyxoviruses
- Rubeola (measles)
- Mumps
- Human parainfluenza virus (HPIV)
- Respiratory syncytial virus (RSV)
What is Rubella?
- German measles
- Part of Togaviruses
What shape are paramyxoviruses?
Pleiomorphic (helical or icosahedral)
Paramyxoviruses are transmitted via:
Aerosol transmission, respiratory
Paramyxoviruses are highly ____
Contagious
When was the measles vaccine introduced?
1963
The introduction of the measles vaccine led to ____ in the US in 2000
Elimination
After the 1st measles vaccine was improved in the US, the CDC recommended _____. Then, _____ was started and measles cases ____ as of 2019
2nd MMR dose; MMR autism myth; increased
What is the infection rate of measles after close contact?
90% infection rate
When is rubeola infectious?
4 days before through 4 days after rash appears
How is rubeola spread?
Direct contact with infectious droplets
How long does rubeola remain infectious in the air?
Up to 2 hours
Describe the course of the measles infection cycle
Measles virus invades alveolar macrophages and dendritic cells in the lungs; local lymph node; Dissemination to B and T cells; blood; other organs
Measles causes immune ____, which depletes ____. Therefore it has the ability to _____ patient’s immune systems
Amnesia; memory cells; reset
Immune amnesia caused by measles can lead to a patient being vulnerable to ____
All other infections
What is the most contagious stage of measles?
Initial symptoms (high fever, cough, runny nose, etc)
After 2-3 days after the initial symptoms of measles begins, ____ forms in the mouth
Koplik spots
_____ is an early sign of measles infection
Koplik spots
After 3-5 days after the initial symptoms of measles begins, what happens?
Flat red spots at hairline and spread downward (maculopapular rash)
What is a symptom that a child in the most contagious period of measles may have?
High fever
The eyes of a child with measles may appear:
Red and watery (conjunctivitis)
The measles maculopapular rash will have ____ that may appear on top of flat red spots
Small raised bumps
Who is at higher risk of measles complications?
- Children < 5 years
- Adults > 20 years of age
- Pregnant women
- Immunocompromised people
What is a common complication of measles?
Ear infections that can result in permanent hearing loss
What are some severe complications of measles?
- pneumonia
- encephalitis
- death
____ is the most common cause of death from measles in young children. Death can also occur from ____ and ____ complications
Pneumonia; respiratory and neurologic
Measles-induced encephalitis can cause:
Convulsions, deafness, intellectual disability
Sub-acute sclerosing panencephalitis (SSPE) can be caused by ____ infection
Measles