Hay fever in a changing climate: linking an Internet-based diary with environmental data

Area of Science:

• Environmental Health
• Allergology
• Biometeorology

Background:

• Climate change necessitates tools linking environmental factors to human health.
• Hay fever (allergic rhinoconjunctivitis) is a prevalent condition influenced by environmental triggers.
• Understanding these links is crucial for public health management.

Purpose of the Study:

• To develop and test an internet-based tool for correlating hay fever symptoms with environmental data.
• To investigate the relationship between pollen load, weather variables, and rhinoconjunctivitis symptoms in Canberra, Australia.
• To assess the feasibility of using online diaries for monitoring environmental health impacts.

Main Methods:

• Developed an internet-based hay fever diary for 42 participants over 60 days in spring 2010.
• Simultaneously recorded daily airborne pollen counts and meteorological data (temperature, rainfall).
• Analyzed correlations between pollen load, climate variables, and reported nasal/ocular symptoms.

Main Results:

• High participant compliance (79% daily average).
• Pollen load increased post-rainfall; rhinoconjunctivitis symptoms correlated with pollen levels.
• Mucosal itching showed a gradual increase coinciding with higher daily maximum temperatures.

Conclusions:

• The online diary is a feasible method for linking environmental variables to rhinoconjunctivitis symptoms.
• Findings demonstrate a clear association between pollen, temperature, and hay fever symptoms.
• This approach can be adapted to monitor various health responses to environmental changes.