Textbook Notes (369,133)
Canada (162,403)
HLTB21H3 (177)
Chapter

Measles.docx

2 Pages
61 Views

Department
Health Studies
Course Code
HLTB21H3
Professor
Rhan- Ju Song

This preview shows 80% of the first page. Sign up to view the full 2 pages of the document.
Description
October 2012 Measles  Measles (rubeola, hard measles, red measles, 9 day measles, morbilli) is a common , acute, viral infectious disease, principally of children with worldwide distribution, that is clinically characterized by fever and a typical red, blotchy rash combined with a cough  It is a vaccine preventable disease, and its vaccine is one of the vaccines included in the Expanded Programme on Immunization (EPI) of the World Health Organization (WHO) Etiology and Epidemiology  Measles is caused by a virus, which is in the genus Morbillivirus of the family Paramyxoviridae  It can survive drying in micro droplets in the air  It is transmitted by contact of susceptible individuals with the nose and throat secretions of infected persons  Infection also occurs through direct contact, and by indirect contact through freshly soiled articles and airborne transmission  There is no reservoirs for measles other than human beings, which means that a continuous chain of susceptible contacts is necessary to sustain transmission  Measles has an incubation period from time of exposure to onset of fever of about 10 days with a range from 8- 13 days  Measles is primarily an epidemic disease of children, with epidemics occurring every 2 to 5 years  Epidemic measles has a winter- spring seasonality in temperate climates and a less marked-hot-dry seasonality in equilateral regions  Difference in severity among certain populations are most likely the result of nutritional and environmental factors  Measles mortality is highest in the very young and the very old Distribution and Incidence  Measles has a worldwide distribution, and the Expanded Programme on Immunization of the World Health Organization maintains an information system on reported cases and vaccination coverage in member countries  In populated areas where measles is both endemic and epidemic, over 90 percent of the adult population will show serologic evidence of prior infection  In remote populations where measles is not endemic, a significant proportion of the population can be susceptible, which may produce large outbreaks when the measles virus is introduced from the outside Immunology  Infants usually have passive immunity to measles as a result of maternal antibodies they get from their mothers  The passive immunity protects the infant from measles for 6-9 months, depending on the amount of maternal antibody required  Measles infection induces a lifelong immunity  The optimal age of vaccination is related to the persistence of passive immunity from maternal antibodies and patterns of disease transmission 1 October 2012 Clinical Manifestations and Pathology  The prodromal phase of measles disease
More Less
Unlock Document

Only 80% of the first page are available for preview. Some parts have been intentionally blurred.

Unlock Document
You're Reading a Preview

Unlock to view full version

Unlock Document

Log In


OR

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


OR

By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.


Submit