Risk assessment: Swine-origin triple reassortant influenza A(H3N2) viruses in North America

Risk assessment

CDC has reported recent infections in children in North America with a swine-origin triple reassortant influenza A(H3N2) virus that includes a genetic component from the pandemic 2009 virus, and with probable human-to-human transmission with these viruses.

Executive summary

Centers for Disease Control and Prevention (CDC) has reported recent infections in children in North America with a swine-origin triple reassortant influenza A(H3N2) virus that includes a genetic component from the pandemic 2009 virus, and with probable human-to-human transmission with these viruses.

ECDC has conducted a rapid risk assessment to evaluate the implications for public health in Europe.