AI Article Synopsis
- In Ghana, a study examined seasonal mortality patterns in children and older adults from 2002 to 2011 to understand the impacts of an epidemiologic transition.
- The research found that overall mortality was higher during the wet season, particularly with a significant increase in deaths in September and April, while December saw a decrease in deaths.
- The spikes in mortality were attributed to infectious diseases in children and older adults during the wet season, while older adults experienced increased deaths from non-infectious causes at the dry season's end.
Article Abstract
Background: Mortality in tropical countries varies considerably from season to season. As many of these countries have seen mortality moving from child to old-age mortality, we have studied seasonal variation in child and old-age mortality in a rural area in Ghana that currently undergoes an epidemiologic transition.
Methods: In an annual survey from 2002 through to 2011, we followed 29 642 individuals and obtained the cause and month of death from 1406 deceased individuals by making use of verbal autopsies.
Results: When comparing the seasons, we observed a trend for higher mortality during the wet season. When comparing separate months, we observed 34% more deaths than expected in September (95% CI 1.04-1.69; p = 0.024) at the end of the wet season and 43% more deaths in April (95% CI 1.13-1.80; p = 0.004) at the end of the dry season, while there were 42% less deaths than expected in December (95% CI 0.52-0.70; p = 0.003), shortly after the wet season. Cause-specific analysis indicated that the peak at the end of the wet season was due to excess mortality from infectious diseases in children and older people alike, whereas the peak in old-age mortality at the end of the dry season was due to non-infectious causes in older people only.
Conclusions: Taken together, our data suggest that during the epidemiologic transition, mortality not only shifts from child to old-age and from infectious to non-infectious, but also from the wet to the dry season.
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| http://dx.doi.org/10.1093/trstmh/tru007 | DOI Listing |
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