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Clinical aspects of influenza A(H1N1)pdm09 cases reported during the pandemic in Brazil, 2009-2010
To describe the clinical aspects of cases of influenza A(H1N1)pdm09 in Brazil. A descriptive study of cases reported in Sistema de Informação de Agravos de Notificação (SINAN), 2009-2010. As the final classification, we obtained 53,797 (56.79%) reported cases confirmed as a new influenza virus subty...
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Published in: | Einstein (São Paulo, Brazil) Brazil), 2015-04, Vol.13 (2), p.177-182 |
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Main Authors: | , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | To describe the clinical aspects of cases of influenza A(H1N1)pdm09 in Brazil.
A descriptive study of cases reported in Sistema de Informação de Agravos de Notificação (SINAN), 2009-2010.
As the final classification, we obtained 53,797 (56.79%) reported cases confirmed as a new influenza virus subtype, and 40,926 (43.21%) cases discarded. Fever was the most common sign, recorded in 99.74% of the confirmed and 98.92% of the discarded cases. Among the confirmed cases, the presence of comorbidities was reported in 32.53%, and in 38.29% of the discarded cases. The case fatality rate was 4.04%; 3,267 pregnant women were confirmed positive for influenza A new viral subtype and 2,730 of them were cured. The case fatality rate of pregnant women was 6.88%.
The findings suggested concern of the health system with pregnant women, and patients with comorbidities and quality of care may have favored a lower mortality. We recommend that, when caring for patients with severe respiratory symptoms, with comorbidities, or pregnant women, health professionals should consider the need for hospital care, as these factors make up a worse prognosis of infection by the pandemic influenza virus. |
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ISSN: | 1679-4508 2317-6385 2317-6385 1679-4508 |
DOI: | 10.1590/S1679-45082015AO3331 |