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Middlesex-London Health Unit

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Infectious Diseases

Infectious diseases are caused by contact with germs (bacteria, viruses, parasites or fungi) either directly; being in contact with a sick person, or indirectly; from contact with contaminated items such as food or frequently touched surfaces. People who have been in contact with germs that cause infectious diseases can be sick with symptoms or show no symptoms at all.


Guide to Common Childhood Infections

The Guide to Common Childhood Infections was developed by the Middlesex-London Health Unit and Southwestern Public Health as a resource for educators in schools and daycares. It covers different types of infections, signs and symptoms, how the infection is spread, when it’s contagious, when exclusion from school is needed, and when the infection should be reported to public health. To download the resource in English or French, please click the links below.


A teddy bear using a stethoscope

Download PDF (English)

A teddy bear using a stethoscope

Download PDF (French)

Infectious Disease Control Team

The Middlesex-London Health Unit's Infectious Disease Control Team prevents and controls the spread of diseases through:

  • Inspections of institutional food premises; including long-term care homes, retirement homes, hospitals and childcare centres 
  • Monitoring and responding to outbreaks in institutions and the community
  • Follow-up of people with diseases of public health significance such as tuberculosis, the flu (Influenza) and hepatitis
  • Inspections of personal services settings like tattoo and piercing shops, nail salons and barber shops
  • Providing education and consultation services to local agencies, schools and the public about infection prevention and control

Contact Us

If you have any questions, please call the Middlesex-London Health Unit at 519-663-5317.

Infectious Disease Control
Date of creation: February 25, 2013
Last modified on: July 20, 2023