You can be contagious and start spreading the flu virus up to a day before symptoms appear.
Dr. David Williams
Chief Medical Officer of Health
Chief Medical Officer of Health <br> <br> Dr. David Williams, BSc., MD, MHSc, FRCPS <br> <br> Dr. David Williams is currently the Chief Medical Officer of Health for the province of Ontario. Dr. Williams was the Medical Officer of Health for the Thunder Bay District Board of Health from October 2011 to June 30, 2015. Prior to that, Dr. Williams held the position of Associate Chief Medical Officer of Health, Infectious Disease and Environmental Health Branch Director at the Ministry of Health and Long-Term Care from 2005 to 2011. During this time he was also the Acting Chief Medical Officer of Health for Ontario from November 2007 to June of 2009. Prior to working at the province, Dr. Williams was the Medical Officer of Health and CEO for the Thunder Bay District Health Unit from 1991 to 2005. <br> Dr. Williams is a four time graduate of the University of Toronto receiving his BSc., MD, Masters in Community Health and Epidemiology (MHSc) and Fellowships in Community Medicine/Public Health and Preventive Medicine (FRCPS). <br> Prior to entering public health, Dr. Williams practiced hospital based clinical practice as a GP and GP Anaesthetist at the Sioux Lookout Zone Hospital and also in International Health at the United Mission to Nepal Mission Hospital, Tansen Nepal.
For more than 200 years, vaccines have been saving lives around the world. When children get vaccinated against a disease, they build up their immunity, making them stronger and more resistant to that disease. Getting vaccinated helps their body make antibodies that fight specific diseases, giving their immune system a boost.
04/24/2017 11:58 EDT
It has been recognized for many years that people 65 years and older are at greater risk of serious complications from the flu compared with young, healthy adults because our immune defenses become weaker with age. While flu seasons can vary in severity, during most seasons, people 65 years and older bear the greatest burden of severe flu disease.
11/17/2016 03:52 EST
Lyme disease can be serious. It is spread to humans through the bite of an infected, blacklegged tick. And health officials are seeing an increase in the number of cases in the province. They've been rising since 2011, and we're seeing more black-legged tick populations in new areas of the province, especially in wooded areas.
06/30/2016 10:40 EDT
We live in a province with a publicly funded vaccination program, however, the threat posed by vaccine preventable diseases is still with us, as we have seen in recent outbreaks of measles, mumps and pertussis (whooping cough). That's why getting vaccinated is important.
01/12/2016 09:25 EST
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