Double Trouble: Flu Intensifies Effects of Ozone
2009

Flu and Ozone Pollution: A Dangerous Combination

Sample size: 14 publication Evidence: moderate

Author Information

Author(s): Cynthia Washam

Primary Institution: University of Hong Kong

Hypothesis

Can the influenza virus intensify the effects of air pollution on respiratory health?

Conclusion

The study found that respiratory hospitalizations and mortality increased significantly with rising ozone levels during flu season.

Supporting Evidence

  • Increased ozone levels during flu season led to more hospitalizations and deaths from respiratory diseases.
  • The association between ozone and respiratory issues was stronger in women than in men.
  • Hospitalizations for respiratory illness decreased when peak PM10 concentrations coincided with flu outbreaks.

Takeaway

When there's a lot of flu around, and ozone pollution is high, more people get sick and die from breathing problems.

Methodology

A retrospective population-based study analyzing hospitalization and mortality rates for respiratory and cardiovascular diseases using medical data from 14 hospitals.

Potential Biases

Weak interactions were found between influenza and other pollutants, cautioning against drawing strong conclusions.

Limitations

The study did not find significant relationships between ozone and cardiovascular disease hospitalizations or mortality.

Participant Demographics

Data was collected from patients diagnosed with respiratory or cardiovascular disease in Hong Kong.

Want to read the original?

Access the complete publication on the publisher's website

View Original Publication