Beest, D.E. te

fluenza poultry visit person probability virus infection depopulation epizootic activity control number erasmus university rotterdam human transmission fluenza virus screening person-visit h 7n virus netherland biosecurity method control activities management study questionnaire signi database signi ficant association conjunctiviti table result finition housing period health indexing factor model exposure farm visits cleaning case patients signi ficantly ppe use cleaning assistance response 14 march 2003 analyses category contact disease fluenza viruses parameter sample • bos erasmu self-reported conjunctivitis poultry farms exposure variables assistance university march risk factors rotterdam data sets disease control antibody downloaded ficantly gassing h 7 antibodies analysis h 7n epidemic h 5n infection biosecurity management visits questionnaire response information assay handling