Seroprevalence of antibodies to the influenza A (H1N1) virus among healthcare workers prior to the 2009 pandemic peak. Olalla, J., de Ory, F., Casas, I., del Arco, A., Montiel, N., Rivas-Ruiz, F., de la Torre, J., Prada, J. L., Fernandez, F., Garcia-Alegria, J., & Grp, M. R. Enfermedades Infecciosas Y Microbiologia Clinica, 30(7):371–375, August, 2012.
Seroprevalence of antibodies to the influenza A (H1N1) virus among healthcare workers prior to the 2009 pandemic peak [link]Paper  doi  abstract   bibtex   
Objective: Our aim was to study the proportion of healthcare workers with a positive serology for Influenza A(H1N1)2009 without having flu, in a Spanish hospital at the beginning of the pandemic. Methods: A survey study carried out during August 2009 (before the peak of the pandemic in Spain) in the Hospital Costa del Sol, a second level hospital with almost 300 beds in the South of Spain. The participants were workers in the following hospital units: Emergencies, Medical Area (Internal Medicine, Chest Diseases), Surgical Area (General Surgery and Anaesthesia) of any professional category. A study was made of the proportion of healthcare workers in our hospital with positive serology for the new influenza A (H1N1)2009 virus, as determined by the haemagglutination inhibition technique (\textgreater= 1/40). The subjects completed a health status questionnaire, and provided a blood sample for serology testing. Results: A total of 239 workers participated, of whom 25.1% had positive serology. The hospital area in which most individuals had positive serology was the Emergency Department (36.6%), while the professional category in which most individuals with a positive serology worked was that of the orderlies (41.7%). Conclusion: Around 25% of healthcare workers in our hospital had positive serology before the peak of the pandemic, none of them had received vaccine for Influenza A (H1N1) 2009 Or had been diagnosed of influenza previously. (C) 2011 Elsevier Espana, S.L. All rights reserved.
@article{olalla_seroprevalence_2012,
	title = {Seroprevalence of antibodies to the influenza {A} ({H1N1}) virus among healthcare workers prior to the 2009 pandemic peak},
	volume = {30},
	issn = {0213-005X},
	url = {://WOS:000309303600004},
	doi = {10.1016/j.eimc.2011.11.019},
	abstract = {Objective: Our aim was to study the proportion of healthcare workers with a positive serology for Influenza A(H1N1)2009 without having flu, in a Spanish hospital at the beginning of the pandemic. Methods: A survey study carried out during August 2009 (before the peak of the pandemic in Spain) in the Hospital Costa del Sol, a second level hospital with almost 300 beds in the South of Spain. The participants were workers in the following hospital units: Emergencies, Medical Area (Internal Medicine, Chest Diseases), Surgical Area (General Surgery and Anaesthesia) of any professional category. A study was made of the proportion of healthcare workers in our hospital with positive serology for the new influenza A (H1N1)2009 virus, as determined by the haemagglutination inhibition technique ({\textgreater}= 1/40). The subjects completed a health status questionnaire, and provided a blood sample for serology testing. Results: A total of 239 workers participated, of whom 25.1\% had positive serology. The hospital area in which most individuals had positive serology was the Emergency Department (36.6\%), while the professional category in which most individuals with a positive serology worked was that of the orderlies (41.7\%). Conclusion: Around 25\% of healthcare workers in our hospital had positive serology before the peak of the pandemic, none of them had received vaccine for Influenza A (H1N1) 2009 Or had been diagnosed of influenza previously. (C) 2011 Elsevier Espana, S.L. All rights reserved.},
	language = {English},
	number = {7},
	journal = {Enfermedades Infecciosas Y Microbiologia Clinica},
	author = {Olalla, J. and de Ory, F. and Casas, I. and del Arco, A. and Montiel, N. and Rivas-Ruiz, F. and de la Torre, J. and Prada, J. L. and Fernandez, F. and Garcia-Alegria, J. and Grp, Marbegrip Res},
	month = aug,
	year = {2012},
	keywords = {H1N1 subtype, Haemagglutination, Health personnel, Infectious Diseases, Influenza A virus, Inhibition tests, Microbiology, Spain, hospital staff, outbreak, singapore},
	pages = {371--375},
}

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