Biological Agents

Case Study: Herbicide Use in Wild Parsnip and Giant Hogweed Control

The document was developed in response to a request from the Leeds, Grenville & Lanark District Health Unit to assist with addressing public concerns about the use of herbicides to control…
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Communicating the Risk of Infectious Diseases in a Changing Climate

A changing climate brings the threat of emerging, new infectious diseases and the resurgence of old infectious outbreaks. To ensure that public health professionals and policy makers receive timely…
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Controlling giant hogweed: the scope of a concerted regional intervention

Giant hogweed is an invasive alien plant that can severely burn the skin. The plant is not yet very prevalent in Bas-SaintLaurent, and intervention in the region to date has focused on eradicating it…
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Cyanobacteria in Freshwater

Cyanobacteria, commonly known as blue-green algae, are naturally occurring microscopic organisms found in fresh, brackish, or marine water that can release cyanotoxins into freshwater systems. These…
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Cyanobacteria in Freshwater

What are cyanobacteria? Are cyanoblooms preventable? Who is at risk and how does exposure occur? Is there testing for cyanotoxins?This NCCEH document provides a brief outline of these key questions…
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Drinking water guidelines and governance

The provision of safe drinking water across Canada is a responsibility shared across many agencies. At the federal level, Health Canada sets Drinking Water Guidelines for contaminants in drinking…
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Growing at Home: Health and Safety Concerns for Personal Cannabis Cultivation

Personal cultivation as described by the proposed Cannabis Act (2017) will permit adults to cultivate up to four cannabis plants per household. This provision is intended to both promote equity by…
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Health Effects from Mould Exposure in Indoor Environments - revised

Moulds are naturally occurring and widespread in the environment; therefore, it is not possible to eliminate exposure. Sufficient evidence exists to conclude that exposure to mould in indoor…
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How the “Tick Talk” works for communicating risk awareness

Climate changes are expanding the areas where ticks can survive and thrive across Canada. The number of Canadians contracting tick-borne diseases, such as Lyme Disease and Anaplasmosis, is also…
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Identifying Vulnerabilities in Fungal Pathogens Through Functional and Chemical Genomic Analysis

Intrinsic and acquired drug resistance of microbial pathogens poses a grave threat to human health and has enormous economic consequences worldwide. Fungal pathogens present a particular challenge…
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Irrigating Food Crops with Water Containing Cyanobacteria Blooms

Primary inquiry: Small horticulture growers have been watering their crops with surface water containing a cyanobacterial bloom, before selling their crops at local markets.Can irrigation of food…
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Listeriosis in Ontario

In 2008, Ontario experienced the largest listeriosis outbreak ever recorded in the province. Since then, the Ministry of Health and Long-Term Care, Public Health Ontario and local public health units…
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Marine Shellfish Poisoning

Marine shellfish poisoning refers to illnesses in humans caused by consumption of marine bivalve shellfish (e.g., clams, mussels, oysters, scallops, cockles) that contain biotoxins (e.g., domoic acid…
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Mould Assessment Recommendations - revised

Excessive dampness and mould growth on building material surfaces and contents can pose health risks and should not be tolerated in indoor environments. A mould assessment determines if mould is…
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Mould Remediation Recommendations - revised

Excessive dampness and mould growth on building material surfaces and contents can pose health risks and should not be tolerated in indoor environments. The main goal of remediation is to reduce the…
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Mould: Health Effects, Exposure Assessment and Remediation

NCCEH Mould Investigation Toolkit

Public Health Inspectors (PHIs) and Environmental Health Officers (EHOs) across Canada have different responsibilities, policies, and guidelines when it comes to investigating public inquiries about…
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