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Short Communication • Rev. Soc. Bras. Med. Trop. 49 (04) • Jul-Aug 2016 • https://doi.org/10.1590/0037-8682-0045-2016   copy

Laboratory-confirmed deaths caused by influenza A (H1N1)pdm09 in the Santa Catarina State, Brazil, 2009-2014

Authorship SCIMAGO INSTITUTIONS RANKINGS

Abstract:

INTRODUCTION:

Little information is available on the evolution of influenza A (H1N1)pdm09-related mortality in Brazil.

METHODS:

During the period 2009-2014, official epidemiological surveillance and mortality data were used to ascertain influenza-related deaths in the Santa Catarina State in Brazil.

RESULTS:

The highest overall mortality rate (2.3 per 100,000) was observed in 2009. Pregnant women constituted the highest risk group (mortality rate 18.0 per 100,000). Following vaccination of high-risk groups, the rate reduced sharply but peaked again in 2012. It subsequently decreased, albeit more gradually.

CONCLUSIONS:

Influenza A (H1N1)pdm09 mortality demonstrated a cyclic pattern, with two peaks followed by a gradual decrease.

Keywords:
Influenza A (H1N1); Mortality rate; Brazil

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