Journal
SCANDINAVIAN JOURNAL OF INFECTIOUS DISEASES
Volume 38, Issue 10, Pages 894-897Publisher
INFORMA HEALTHCARE
DOI: 10.1080/00365540600749984
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We conducted a prospective study in a long-term care facility. Virologic diagnosis was assessed using viral isolation, polymerase chain reaction and serology for all patients with a flu-like syndrome. Albumin, vitamins and trace elements were also measured. Results. The risk of influenza increased 6.5-fold in patients with an antibody titer of 40 during the influenza outbreak (P = 0.04). Micronutriments and vitamins deficiencies were important. Patients with antibody titer > 1:40 could still be infected by the virus without correlation with the nutritional status. Conclusion. Humoral protection with a titer > 1:40 might not be protective in the elderly. Nutritional deficiencies were too prevalent to detect any effect on the results.
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