Communicable Diseases Information for Physicians
Communicable Diseases Information for Physicians
Ongoing Measles outbreaks
- Measles outbreaks are occurring worldwide, including cases reported in neighbouring public health units. Please ensure all patients are up to date with their measles vaccinations.
Consider measles in the differential diagnoses particularly in returning travelers with respiratory symptoms.
In response to the current measles outbreak in Ontario, some public health units have updated their measles vaccine recommendations, including early doses for infants and children, where the risk of exposure to measles is higher.
People who live, work, attend school, travel to or participate in activities (such as sports or worship) in an affected region, please follow current vaccine recommendations in that region. Refer to Public Health Ontario’s Routine and Outbreak-Related Measles Immunization Schedules (external link) for more information on outbreak immunization recommendations and a list of public health units that have implemented the updated measles outbreak immunization strategy.
Early measles vaccination is not currently recommended in Halton Region as we are not currently an outbreak affected region.
Diseases of Public Health Significance
Reporting Requirements
Under the authority of the Health Protection and Promotion Act (HPPA) and Regulation 569, suspect and confirmed cases or death caused by or contributing to diseases of public health significance are to be reported to the local Medical Officer of Health.
Provide the following details in your report as per Regulation 569:
- Case’s Name and Address in full
- Date of Birth
- Disease (specify if confirmed or suspected)
- Telephone number
- Specimens taken, if any
- Physician’s name
- Name of person reporting, designation, and contact information
Diagnostic Testing Recommendations
All suspected cases of pertussis should be reported immediately to Halton Region Public Health at 905-825-6000 (or toll-free at 1-866-442-5866) or dial 311 if calling within Halton Region.
Whenever possible, suspect pertussis patients should be placed in a separate room upon arrival.
Isolation
Advise the patient to self-isolate for five days from the start of antibiotic treatment or for 21 days from the onset of cough, if not treated. Also advise the patient to expect a call from Halton Region Public Health.
Testing to confirm pertussis infection
Recommended specimens for acute pertussis infection are:
- Bordetella pertussis Nasopharyngeal swab
Note: these swabs are different from other NPS swabs
Refer to Public Health Ontario Laboratory (PHOL) Test Information Index:
- Complete all fields of the requisition form as indicated on the Bordetella – Respiratory webpage (external link).
- Use a PHOL requisition (external PDF)
- Send specimens directly to the Central Public Health Lab in Toronto (external link).
- STAT testing is not available but if urgent testing is required (i.e. critical samples) Contact the Ontario Public Health Laboratory Customer Service: 1-877-604-4567 to ensure the sample is on the next available run.
All suspected cases of mumps should be reported immediately to Halton Region Public Health at 905-825-6000 (or toll-free at 1-866-442-5866) or dial 311 if calling within Halton Region.
Whenever possible, suspect mumps patients should be placed in a separate room upon arrival. Only health care workers with documented immunity to mumps should assess the patient.
Isolation
Advise the patient to self-isolate at home for five days from the onset of symptoms and to expect a call from Halton Region Public Health.
A mask should be worn if the person requires being in public (e.g. lab or clinic appointments)
Testing to confirm mumps infection
Recommended specimens for acute mumps infection are:
- Buccal swab *preferred* (within nine days from symptom onset) or Throat swab (within nine days from symptom onset)
AND - Urine (within 14 days following symptom onset)
- Serology (IgG and IgM)
Refer to Public Health Ontario Laboratory (PHOL) Test Information Index:
- Complete all fields of the requisition form as indicated on the following webpages
- Use a PHOL requisition (external PDF)
- Contact the Ontario Public Health Laboratory Customer Service at 1-877-604-4567 prior to submitting samples for mumps PCR testing. This will facilitate testing planning and prioritization.
- Follow PHOL’s direction for sending specimens directly to the Central Public Health Lab in Toronto (external link) and marking the specimens as STAT, if applicable.
All suspected cases of measles should be reported immediately to Halton Region Public Health at 905-825-6000 (or toll-free at 1-866-442-5866) or dial 311 if calling within Halton Region.
Important: Whenever possible, suspect measles patients should promptly be isolated in a single room with negative air flow (airborne isolation room). Suspect measles patients should be assessed at the end of day and placed in a separate room upon arrival to minimize contact with other patients. Only health care workers with documented immunity to measles should assess the patient (scroll below for more IPAC Measures).
Signs and symptoms
Symptoms can appear 7 to 21 days after contact with someone who has the measles virus.
Measles symptoms include:
- fever
- cough
- runny nose
- red eyes
- sleepiness
- irritability
- small, white spots on the inside of the mouth (Koplik Spots)
- a red blotchy rash that first starts on the face and spreads down the body, arms, and legs (this rash can last 4 to 7 days)
Isolation
Advise the patient to self-isolate until 4 days after rash onset or until negative test results are available, whichever comes first.
Testing to confirm measles infection
Recommended specimens for acute measles infection are:
- Nasopharyngeal or throat swab PCR using Viral Transport Media (within seven days of rash onset)
AND - Urine PCR (within 14 days of rash onset)
Refer to Public Health Ontario Laboratory (PHOL) Test Information Index:
Note: serology testing is not recommended for diagnosing acute infection but can be done to determine immune status. Refer to PHOL Measles – Serology for details (external link).
- Use a PHOL requisition (external PDF)
- Complete all fields of the requisition form as indicated on the Measles – Diagnostic – PCR webpage (external link). Must also include travel history and vaccination status on requisition.
- Priority specimens for measles testing must be packaged separately from routine specimens. To assist with laboratory workflow and to identify priority specimens, specimens must be marked “STAT” on the outside of the package. Call Halton Region Public Health to determine if it is possible to help facilitate transport of samples to PHOL.
- Ensure your office has unexpired testing specimen container/supplies available for testing. Kits can be ordered from PHOL (external PDF).
Infection prevention and control
In addition to routine practices, airborne, droplet, and contact precautions should be used for patients with a known or suspected case of having measles.
In a clinical office setting, follow the Provincial Infectious Diseases Advisory Committee’s (PIDAC) Infection Prevention and Control for the Clinical Office Practice (external PDF):
- Make an effort to see the patient at the end of the day, if possible.
- Suspect measles patients should be assessed at the end of day and placed in a separate room upon arrival.
- Only health care workers with documented immunity to measles should assess the patient.
- All health care workers, regardless of presumptive immunity to measles must wear a fit-tested, seal-checked N95 respirator, eye protection, gown, and gloves when providing care to a patient with suspect or confirmed measles.
- Triage the patient out of the waiting area as quickly as possible. The patient should enter and exit through a separate access point and go directly into and out of the examination room.
- Provide a surgical mask for the patient to wear at all times while in all areas of the office.
- Keep the examination room door closed and open a window in the room if possible.
- After patient assessment, do not use the exam room until at least 2 hours have elapsed.
In an acute care setting, isolate the suspected measles case in a single room with negative air flow and keep the door closed.
For more information to assist with timely identification and management of individuals suspected to have measles and information about measles prevention through immunization visit PHO - Measles: Information for Health Care Providers (external link)
How Halton Region Health Department Supports Physician Offices
The Health Department provides support for:
- investigating all reports of confirmed and suspected cases of diseases of public health significance (formerly reportable diseases) in the community and within institutions (i.e., schools, licensed daycares, hospitals, long-term care homes, retirement homes)
- reporting cases to the Ministry of Health and Long-Term Care and/or Pubic Health Ontario for ongoing surveillance and identification of outbreaks
- inspecting institutions, premises or facilities where cases and/or disease transmission is suspected
We:
- issue Physician Advisories and Outbreak Bulletins
- manage cases and contacts, including:
- recommendations to physicians about treatment and chemoprophylaxis
- advice on required testing and/or specimen sample submission
- recommendations about infection prevention and control measures
- advice on immunization or immune-globulin to cases and contacts
- counselling for cases and contacts about disease prevention
- provide Health Care Providers with publically funded medication for the treatment of Sexually Transmitted Infections (STI) and tuberculosis
Infection Prevention and Control (IPAC) for Health Professionals
We have assembled information and resources for health professionals about Infection Prevention and Control.
- Manuals, guides and reports
- Physician/dental office resources
- Reprocessing of medical devices
- Clinic/ambulatory care resources
- Related associations and networks
Tuberculosis: Screening and Treatment Resources
We have assembled information and resources for physicians about Tuberculosis.
- Halton Region Health Department Tuberculosis Program
- TB screening and treatment resources
Topics Library
Lyme disease and other tick-borne diseases
- Tick-borne diseases
- Lyme
- Lyme Disease Reporting Form (PDF file)
- Public Health Ontario – Ontario Lyme Disease Risk Areas Map 2023 (external link)
- Public Health Ontario – Lyme Disease (external link)
- Public Health Ontario – Lyme Disease – Serology – Specimen Requirements (external link)
- Ontario Health - Clinical Guidance Document: Management of Tick Bites and Investigation of Early Localized Lyme Disease (external link)
- Government of Canada - Lyme disease surveillance in Canada: Annual edition 2021 (external link)
- Assessment and Prescribing Algorithm for Pharmacists: Antibiotic Prophylaxis to Prevent Lyme Disease following a Tick Bite (external link)
- Anaplasmosis
- Babesiosis
- Powassan virus
- Public Health Ontario - Powassan Virus (external link)
- Public Health Ontario - Powassan Virus – Serology and PCR (external link)
- Public Health Ontario – Arbovirus (Non-Zika) Testing Intake Form (external link)
Important Note: In addition to the PHO General Test Requisition form, it is mandatory to submit the Arbovirus (Non-Zika) Testing Intake Form with all required fields (*) completed. Specimens received without the appropriate forms will not be tested.
Avian Influenza
- Statement from the Public Health Agency of Canada: Update on Avian Influenza and Risk to Canadians (external link)
- Public Health Ontario Testing Information - Avian Influenza – Real-time PCR (external link)
- Public Health Agency of Canada - Avian influenza A(H5N1): For health professionals (external link)
Rabies
As per Health Protection and Promotion Act (external link), report information concerning any animal bite or other animal contact that may result in rabies in one of your patients to the Halton Region Health Department as soon as possible by calling 311. After calling, please also complete our Rabies Exposure Reporting Form (PDF file)and fax it to 905-825-8797.
Positive rabies in Canada – human and animal cases (external link)
Seasonal Influenza
National Advisory Committee Statement on Influenza Immunization (NACI) (external link)