First Human Case of Avian Influenza (Bird Flu) Reported in Canada: Latest Updates and Safety Precautions

First Human Case of Avian Influenza (Bird Flu) Reported in Canada: Latest Updates and Safety Precautions

November 12, 2024 Catherine Williams - Chief Editor Health

First Human Case of Avian Flu in Canada: Key Information

Location and Patient: The first presumptive case of H5 avian flu in Canada was detected in a teenager from British Columbia. The patient is hospitalized and under investigation[2][3][4].

Transmission: The teen likely contracted the virus from a bird or animal. There is no evidence of human-to-human transmission, with the risk to the public remaining low[2][3][4].

Investigation: Health officials in British Columbia are conducting a thorough investigation to determine the source of exposure. No other illnesses have been reported among the patient’s contacts[2][3].

Outbreaks: Since October, at least 22 avian flu outbreaks have been reported in British Columbia poultry, along with several detections in wild birds. Similar outbreaks have been reported in the western United States, affecting poultry and dairy cattle[2][3].

Global Context: Avian flu outbreaks are widespread in Europe, North America, Central and South America, sub-Antarctic regions, and Antarctica. Human cases of avian flu have been reported in the U.S., primarily among those exposed to infected birds or animals[1].

Public Health Response

  • Reporting: The case is a notifiable event under the International Health Regulations (2005). Provincial and territorial health authorities must report confirmed and probable human cases within 24 hours to the Public Health Agency of Canada[1].
  • Testing: The primary method for detecting avian influenza A(H5N1) is an influenza A and B RT-PCR with subtyping (H5). Positive samples must be shared with the National Microbiology Laboratory for confirmatory testing[1].
  • Prevention: Health professionals are urged to take preventative measures when handling potentially infected specimens. Rapid influenza diagnostic tests should not be used for avian influenza detection due to their suboptimal sensitivity and inability to detect novel viruses[1].

What to Know About Avian Flu

  • Symptoms: Avian influenza A(H5N1) primarily affects the respiratory tract but can also cause gastrointestinal or central nervous system manifestations. Infection may progress to severe illness and be fatal[1].
  • Precautions: Asymptomatic infections are possible. Health officials recommend personal protective equipment (PPE) usage to reduce exposure to the virus, especially for farm workers[2].
  • Public Awareness: The risk to the general public remains low due to the lack of evidence for sustained person-to-person transmission. However, a pandemic could unfold if that were to change[3].