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Correlations between clinical illness, respiratory virus infections and climate factors in a tropical

T P Loh1, F Y L Lai, E S Tan

  • 1Department of Paediatric Medicine, Kandang Kerbau Women's and Children's Hospital, Singapore.

Epidemiology and Infection
|January 14, 2011
PubMed

Insights

Climate impacts common pediatric respiratory infections in Singapore. Higher influenza and RSV incidence correlated with more upper and lower respiratory infections, while higher humidity correlated with fewer cases.

Area of Science:

  • Environmental Health
  • Epidemiology
  • Pediatrics

Background:

  • Climate significantly influences the transmission patterns of infectious diseases, particularly in tropical regions.
  • Understanding these climate-disease links is crucial for public health planning and resource allocation.

Purpose of the Study:

  • To investigate the correlation between climate variables and the incidence of common pediatric diseases in Singapore.
  • To identify specific climate factors associated with respiratory infections and asthma admissions.

Main Methods:

  • Utilized weekly data from August 2003 to December 2008 from a Singaporean children's hospital.
  • Correlated pediatric disease numbers (respiratory infections, asthma, gastroenteritis, UTIs) with climate data using multivariate time-series analysis.
  • Analyzed incidence of influenza A/B, RSV, parainfluenza, and adenovirus.

Main Results:

  • Upper respiratory tract infections (URTIs) positively correlated with influenza A/B, RSV, and parainfluenza virus incidence.
  • Lower respiratory tract infections (LRTIs) positively correlated with RSV incidence.
  • Both URTIs and LRTIs showed negative correlation with relative humidity; asthma admissions negatively correlated with maximum temperature and positively with influenza B and sunshine hours.
  • Gastroenteritis and urinary tract infections showed no significant climate correlations.

Conclusions:

  • Climate conditions in tropical environments significantly impact pediatric respiratory virus circulation and disease burden.
  • Findings support existing knowledge on virus survival and can aid in predicting disease trends for hospital resource planning.
  • Specific climate-environment-pathogen interactions identified for URTIs, LRTIs, and asthma in pediatric populations.

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