First Human Death from Highly Pathogenic Avian Influenza A(H5N2) Virus Reported in Mexico

Mexico City, Federal District, Mexico Mexico
Contact tracing revealed only one person with a runny nose among those who interacted with the victim, none tested positive for the virus
First reported case of human death from Avian Influenza A(H5N2) virus in Mexico
High pathogenicity strain not previously detected in humans
Outbreak of A(H5N2) reported in Michoacán, Mexico in March
Victim was a 59-year-old resident of the state of Mexico who experienced symptoms including fever, shortness of breath, diarrhea, nausea and general malaise
WHO confirmed detection of A(H5N2) virus in victim's body on May 23
First Human Death from Highly Pathogenic Avian Influenza A(H5N2) Virus Reported in Mexico

The World Health Organization (WHO) confirmed on April 24, 2023, the first fatal case of avian influenza A(H5N2) in Mexico. The victim was a 59-year-old resident of the state of Mexico who experienced symptoms including fever, shortness of breath, diarrhea, nausea and general malaise. Despite having no known interactions with poultry or other animals, the person sought medical attention on April 24 and died later that day.

Researchers detected the A(H5N2) virus in the victim's body on May 23, according to WHO reports. This strain of avian influenza is different from H5N1, which has been circulating among U.S. cattle but not yet making the leap from animals to humans.

The WHO reported that this strain had 'high pathogenicity.' Contact tracing was conducted for the case, revealing that only one of the 17 people who interacted with the victim reported a runny nose on May 28 or 29. None of these individuals tested positive for the virus.

In March, an outbreak of A(H5N2) was reported in a backyard poultry farm in Michoacán, Mexico. The WHO noted that this strain had not previously been detected in humans and urged caution due to its high pathogenicity.

The risk posed by this virus to the general population is currently low, according to the WHO. However, it emphasized that A(H5N2) viruses have previously been reported in poultry in Mexico.



Confidence

90%

Doubts
  • Could other factors have contributed to the victim's symptoms and subsequent death?
  • Was there any confirmation that the victim had not been in contact with infected animals prior to falling ill?

Sources

98%

  • Unique Points
    • A strain of bird flu not previously detected in humans caused the death of a person in Mexico.
    • The World Health Organization identified the strain as H5N2, which differs from the variety causing cases in U.S. cattle.
  • Accuracy
    • The human case cannot yet be definitively linked to recent poultry outbreaks.
    • At least three people, all workers at farms with infected cows, have been diagnosed with bird flu in the US since March.
  • Deception (100%)
    None Found At Time Of Publication
  • Fallacies (100%)
    None Found At Time Of Publication
  • Bias (100%)
    None Found At Time Of Publication
  • Site Conflicts Of Interest (100%)
    None Found At Time Of Publication
  • Author Conflicts Of Interest (100%)
    None Found At Time Of Publication

98%

  • Unique Points
    • The World Health Organization confirmed the first fatal case of avian influenza A(H5N2) in Mexico on April 24, 2023.
    • The victim was a 59-year-old resident of the state of Mexico who experienced symptoms including fever, shortness of breath, diarrhea, nausea and general malaise.
    • A(H5N2) virus was detected in the victim’s body on May 23, 2023.
    • The WHO reported that this strain had ‘high pathogenicity.’
  • Accuracy
    • The victim sought medical attention at the National Institute of Respiratory Diseases and died on the same day.
    • The human case cannot yet be definitively linked to recent poultry outbreaks.
  • Deception (100%)
    None Found At Time Of Publication
  • Fallacies (100%)
    None Found At Time Of Publication
  • Bias (100%)
    None Found At Time Of Publication
  • Site Conflicts Of Interest (100%)
    None Found At Time Of Publication
  • Author Conflicts Of Interest (100%)
    None Found At Time Of Publication

98%

  • Unique Points
    • The first laboratory-confirmed fatal human case of avian influenza A(H5N2) in Mexico was confirmed by the World Health Organization.
    • A 59-year-old resident of the State of Mexico, who had underlying health conditions, developed a fever, shortness of breath, diarrhea, nausea and general malaise on April 17 and died the same day due to complications.
    • The source of exposure to the virus in this case is currently unknown but A(H5N2) viruses have been reported in poultry in Mexico.
  • Accuracy
    • At least three people, all workers at farms with infected cows, have been diagnosed with bird flu in the US since March.
    • A(H5N2) viruses have been reported in poultry in Mexico.
    • An outbreak of A(H5N2) was reported in a backyard poultry farm in Michoacán, Mexico in March 2023.
  • Deception (100%)
    None Found At Time Of Publication
  • Fallacies (100%)
    None Found At Time Of Publication
  • Bias (100%)
    None Found At Time Of Publication
  • Site Conflicts Of Interest (100%)
    None Found At Time Of Publication
  • Author Conflicts Of Interest (100%)
    None Found At Time Of Publication

98%

  • Unique Points
    • The World Health Organization confirmed the first human death caused by the A(H5N2) subtype of avian influenza.
    • A 59-year-old Mexican resident, who had no history of exposure to poultry or other animals prior to falling ill, died on April 24.
  • Accuracy
    • The first reported case of H5 virus infection in a person in Mexico.
    • A strain of bird flu not previously detected in humans caused the death of a person in Mexico.
    • A(H5N2) virus was detected in the victim’s body on May 23, 2023.
  • Deception (100%)
    None Found At Time Of Publication
  • Fallacies (100%)
    None Found At Time Of Publication
  • Bias (100%)
    None Found At Time Of Publication
  • Site Conflicts Of Interest (100%)
    None Found At Time Of Publication
  • Author Conflicts Of Interest (0%)
    None Found At Time Of Publication