• Omar Calvo Aguilar, Yazmín Ruth Canalizo Mendoza, and Maritza Jenny Hernández Cuevas.
• División de Ginecoobstetricia, Hospital General Dr. Aurelio Valdivieso, Oaxaca. omarcalvoaguilar@hotmail.com
• Ginecol Obstet Mex. 2011 Jun 1; 79 (6): 344-50.

BackgroundIn April 2009 are reported the first cases of H1N1 influenza in Mexico, presenting the first death from this cause in the city of Oaxaca in the same month. Different epidemiological reports of pandemics brought to the pregnant and high risk population for complications secondary to infection with influenza H1N1 due to immune status.Objectivedescribe the obstetric population infected with H1N1 influenza in the Hospital General Dr. Aurelio Valdivieso of Oaxaca.Material And MethodRetrospective and observational study conducted in pregnant women with suspected infection by the virus of the influenza A/H1N1 served in the General Hospital Aurelio Valdivieso of Oaxaca, Oax in 13 patients with influenza H1N1 confirmed by RT-PCR during the pandemic occurred from May 2009 to April 2010.ResultsWe reported 27 suspected cases of H1N1 influenza in pregnant women of which 13 were positive by RT-PCR, the cumulative incidence was 1.6 per 1000 pregnant women during the period. The fatality rate was 7.6 per hundred pregnant women affected, one case of maternal death indirectly by fluid and electrolyte imbalance occurred and the attack rate was 0.16 per 100 pregnant women, the main complication of atypical pneumonia occurred in four cases followed by three cases of preeclampsia, infants showed no defects and perinatal outcomes were good to present two cases of admission to the NICU for iatrogenic prematurity without deaths.ConclusionsH1N1 influenza infection has a high fatality rate in late pregnancy. Perinatal outcomes did not worsen the condition or management.

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