Study Guides (390,000)
CA (150,000)
UTSC (10,000)
HLTB21H3 (100)

HLTB21H3 Study Guide - Statistical Hypothesis Testing, Mmr Vaccine Controversy, Measles Virus

Health Studies
Course Code
Caroline Barakat

This preview shows half of the first page. to view the full 2 pages of the document.
Question 1
What is encephalitis? When and how does is it occur? Who first identified it? (2 marks)
- Can be a complication caused by measles
- inflammation of the brain -> either during or after infection -> virus becomes
immune/resistant to the antibodies the body produces, remains in system, few years
later, causes inflammation in the brain also related to flu, chicken pox, West Nile,
- Identified by Sydenham
Question 2
Describe the process of how antibodies for measles are created as a result of infection with the
measles virus. Approximately when and for how long does an infected person become
immune? (2 marks)
- Virus grows into lymph tissue , goes to body surface, grows on body surfaces,
respiratory disease then koplik spots appear, then rash
- Antibodies develop when rash is disappearing, and increase a few days later and then
patient gets life-long immunity
Question 3
What type of virus causes the measles disease? What important differential characteristic does
this type of virus have? How does this virus replicate itself? (2 marks)
- Paramyxo virus
- These are viruses than contain RNA that must transcribe to DNA of host cell before it
can replicate DNA and spread
Question 4
In 1997, measles still occurred in British Columbia. What age group did it primarily infect?
Provide a possible reason. (2 marks)
- cases are in the 20-29 year old -> younger group got vaccinated, the age group did not
get booster shots (let their guards down), older groups did, travelled more thus brought it
back from countries that have measles endemic in the population
Question 5
In the 16th and 17th century, what were the perceived causes of the red rash on children and
infants and what was the positive result that was inferred? (2 marks)
- Believed that red rash was menstrual (mothers) blood, rather than a contagion, and
a good way to get rid of poisons that afforded lifelong immunity
Question 6
In March of 2010, 14 Vancouver-area residents contracted measles with many from the same
household. Provide reasons why they might have contracted measles when Canada has a high
vaccination rate. What are some interventions that may be implemented to prevent a
reoccurrence of outbreak? Are there any moral implications to these interventions? (5 marks)
You're Reading a Preview

Unlock to view full version