Climate variability and campylobacter infection: an international study

Abstract

Campylobacter is among the most important agents of enteritis in developed countries. We have described the potential environmental determinants of the seasonal pattern of infection with campylobacter in Europe, Canada, Australia and New Zealand. Specifically, we investigated the role of climate variability on laboratory-confirmed cases of campylobacter infection from 15 populations. Regression analysis was used to quantify the associations between timing of seasonal peaks in infection in space and time. The short-term association between weekly weather and cases was also investigated using Poisson regression adapted for time series data. All countries in our study showed a distinct seasonality in campylobacter transmission, with many, but not all, populations showing a peak in spring. Countries with milder winters have peaks of infection earlier in the year. The timing of the peak of infection is weakly associated with high temperatures 3 months previously. Weekly variation in campylobacter infection in one region of the UK appeared to be little affected by short-term changes in weather patterns. The geographical variation in the timing of the seasonal peak suggests that climate may be a contributing factor to campylobacter transmission. The main driver of seasonality of campylobacter remains elusive and underscores the need to identify the major serotypes and routes of transmission for this disease.

Effect of temperature and relative humidity on the stability of infectious porcine reproductive and respiratory syndrome virus in aerosols

“…Temperature and relative humidity are highly variable among geographic locations [24] and by season [20]. Indeed, temperature and relative humidity often vary greatly throughout the day.…”

Impact of Rurality, Broiler Operations, and Community Socioeconomic Factors on the Risk of Campylobacteriosis in Maryland

“…Similar results were found in Finland by Hörman et al (2004) who detected Campylobacter spp less frequently in lakes and rivers during winter than in spring, summer, or autumn (Hörman, et al). Kovats et al (2005) applied a regression analysis to data linking temperature and cases of campylobacteriosis across Europe, Canada, Australia and New Zealand, finding a distinct peak of infection in the spring for many areas. (Kovats, 2005).…”

“…Kovats et al (2005) applied a regression analysis to data linking temperature and cases of campylobacteriosis across Europe, Canada, Australia and New Zealand, finding a distinct peak of infection in the spring for many areas. (Kovats, 2005).…”

Kapitel 6: Der Einfluss des Klimawandels auf die Anthroposphäre

“…Viele dieser Erreger erhöhen ihre Wachstumsraten bei steigender Umgebungstemperatur (siehe ECDC, 2013; Kornschober et al, 2009;Kovats et al, 2004Kovats et al, , 2005. In Europa sind hier vor allem Salmonellen und Campylobacter als bakterielle Erreger sowie die Giardien und Kryptosporidien als protozoische Erreger zu nennen.…”

“…In Europa sind hier vor allem Salmonellen und Campylobacter als bakterielle Erreger sowie die Giardien und Kryptosporidien als protozoische Erreger zu nennen. Während die Korrelation der Inzidenzraten von Salmonelleninfektionen und steigender Temperatur -mit Spitzen in den Sommermonaten -nachgewiesen wurde , sind diese Zusammenhänge bei Campylobacter noch unklar (Kovats et al, 2005).…”