New Brunswick health officials have issued an air quality advisory as a precaution after the CN train derailment and fire near Plaster Rock.

Tom Bateman/The Canadian Press
Tom Bateman/The Canadian Press
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Officials say the affected area will mostly be east of the crash site, but could stretch as far as Miramichi.

Dr. Yves Léger, regional medical officer of health, says residents should take precautions when heavy smoke affects air quality.

"Infants, children, pregnant women, older adults, smokers and people with chronic heart or lung diseases should stay indoors to reduce their exposure to the outdoor air," said Léger.

Minor smoke conditions do not typically cause health concerns in most healthy individuals. However, if smoke conditions become more severe, people may experience irritation of eyes, throat and possibly shortness of breath. Individuals should adapt their activities as necessary.

People experiencing difficulty breathing or chest discomfort should consult their physician.

Individuals with respiratory conditions such as chronic obstructive pulmonary disease and asthma, and those with existing cardiovascular conditions such as angina, previous heart attack and congestive heart failure, may be more likely to notice a worsening of their symptoms. Léger advises them to take the precautions and steps they normally do when experiencing a worsening of symptoms.

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