Search

Continuous monitoring of the mortality phenomenon is given high priority in the current recommendations for the preparation of heat action plans in Germany with respect to problem detection and evaluation of interventions. International monitoring systems are heterogeneous concerning the procedures used. In Germany, such monitoring systems are rarely established.Under what circumstances can a mortality monitoring system be operated on a regional basis using routine data?Summer mortality data from Hesse from 2000 to 2018 and their associations with climate variables were analyzed. Different approaches regarding spatial analyses, definition of excess criteria, and adjusting procedures were explored.In Hesse, daily mean temperatures averaged over all operating weather stations proved appropriate as a climate parameter. The expected daily number of deaths was estimated by a moving average based on 25 daily mortality datasets from reference periods of five years adjusted for mortality peaks using data from three previous years. Mortality excess was defined as twice the value of the standard deviation of the expected values including an empirically determined temperature threshold. This threshold was derived from analyzing relative frequencies of observed excess number of deaths per 1 ℃ temperature interval. Based on this approach, 49 mortality excesses with a total of 889 excess deaths were estimated in Hesse during days with a daily mean temperature of more than 23.0 ℃ during summer from 2005 to 2018.The system described in this article turned out to be practicable for systematically monitoring mortality during summer. Timely availability of mortality and climate data is crucial.

Estimation of the number of deaths as a consequence of the influenza pandemics in the twentieth and twenty-first centuries (i.e. 1918-1919, 1957-1958, 1968-1970 and 2009) is a challenge worldwide and also in Germany. After conducting a systematic literature search complemented by our own calculations, values and estimates for all four pandemics were collated and evaluated.A systematic literature search including the terms death, mortality, pandemic, epidemic, Germany, 1918, 1957, 1968, 2009 was performed. Hits were reviewed by title and abstract and selected for possible relevance. We derived our own estimates using excess mortality calculations, which estimate the mortality exceeding that to be expected. All identified values were evaluated by methodology and quality of the database. Numbers of pandemic deaths were used to calculate case fatality rates and were compared with global values provided by the World Health Organization.For the pandemic 1918-1919 we identified 5 relevant publications, 3 for the pandemics 1957-1958 and 1968-1970 and 3 for 2009. For all four pandemics the most plausible estimations were based on time series analyses, taken either from the literature or from our own calculations based on monthly or weekly all cause death statistics. For the four pandemics these estimates were in chronological order 426,600 (1918-1919), 29,100 (1957-1958), 46,900 (1968-1970) and 350 (2009) excess pandemic-related deaths. This translates to an excess mortality ranging between 691 per 100,000 (0.69 % in 1918-1919) and 0.43 per 100,000 (0.00043 % in 2009). Case fatality rates showed good agreement with global estimates.We have proposed plausible estimates of pandemic-related excess number of deaths for the last four pandemics as well as excess mortality in Germany. The heterogeneity among pandemics is large with a variation factor of more than 1000. Possible explanations include characteristics of the virus or host (immunity), social conditions, status of the healthcare system and medical advances.