Map of Simcoe Muskoka

Infectious Diseases

Measles

Measles is a disease caused by a virus and is also known as “red measles” or “rubeola”. Symptoms of measles include fever, coughing, runny nose and a rash. Measles is a highly infectious disease and can be easily prevented by a vaccine. For more information, see the health unit's fact sheet on measles and measles vaccine.

Simcoe Muskoka

Ontario

Technical Notes

Simcoe Muskoka

The following graphs show the number of measles cases in Simcoe Muskoka between 1991 and 2016, and 2000 and 2016, respectively.  Since 2000, there have been between zero and two reported cases of measles in Simcoe Muskoka every year. In 2016, zero cases of measles were reported in Simcoe Muskoka.

2014Measles_histor

2014Measles_counts

In the five years before the introduction of the two-dose vaccine, there were nearly 600 cases of measles in Simcoe Muskoka (from 1991 to 1996). The two-dose measles vaccine was introduced in 1996/1997 which lead to a significant decrease in the number of measles cases reported in Simcoe Muskoka and across Ontario. Since 1996, there have been a total of six cases reported in Simcoe Muskoka in the 19 year time span.

vaccineswork_measles

For more information on measles, please see Public Health Ontario’s Measles Infographic.

Ontario

The following graph shows the incidence rate  of measles in Simcoe Muskoka and Ontario between 2000 and 2016.  In 2016, the incidence rate for measles in Simcoe Muskoka was 0.0 cases per 100,000 population and the Ontario rate was 0.29 cases per 100,000 population. 

2014Measles_rates

Technical Notes

There are many factors that influence how many cases are reported to the health unit, as explained on the Infectious Diseases page.

Provincial definitions classify cases as confirmed, probable or suspect based on clinical and/or laboratory diagnostic criteria.  The provincial case definition for measles changed in April 2009 to include a definition for probable cases whereas before there was no such classification.  The definitions of confirmed and probable cases from 2009 onwards are comparable to confirmed cases before 2009.