• The prevalence of Campylobacter infections is most common in developed countries, where the seasonality of these diseases is consistent but country-specific.

• Researchers in England and Wales conducted a study on campylobacteriosis over 20 years to investigate the seasonal variations of this disease.

• Analysing the Comparative Conditional Incidence, using a statistical model they found that:

1. For every 5° increase in temperature (Celsius) between 8° and 15°, incidence increases by 1 per million.

2. Cases tend to increase when relative humidity is between 75-80%.

3. Strong associations with day length were seen.

4. The correlation between rainfall and wind speed is less significant.

• This concept can also be utilized to help determine the pattern of other disease incidences with changing weather variables.

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