ECDC rapid risk assessment: First isolation of a secondary oseltamivir-resistant A(H1N1)v strain in Denmark
Event reported by Danish EWRS Focal point on 29 June 2009: In the context of tracing contacts of a cluster of four cases infected with influenza A(H1N1)v, including two imported cases in Denmark, a female contact, who initially tested negative on PCR, was given prophylaxis with oseltamivir (75mg per day). Five days later, despite reportedly having complied with treatment, she developed flulike symptoms and was tested positive for A(H1N1)v.
