Threat Assessment Brief: Eurasian avian-like A(H1N1) swine influenza viruses
A recently published study conducted between 2011 and 2018 in China, and based on surveillance data in pigs, identified an emerging genotype 4 (G4) reassortant Eurasian avian-like (EA) A(H1N1) swine influenza virus that contains internal genes from the human A(H1N1)pdm09 and North American triple-reassortant (TR) lineage-derived internal genes.
Risk assessment: Swine-origin triple reassortant influenza A(H3N2) variant viruses in North America
Following recent increased reporting of human infections in the US with an influenza A(H3N2) variant virus of swine origin (A(H3N2)v), ECDC has updated its risk assessment. It concludes that the swine-origin influenza A(H3N2)v viruses do not currently pose a serious risk to human health in general and Europe in particular.
ECDC rapid risk assessment: Human cases of swine influenza without apparent exposure to pigs, United States and Mexico
On April 21, the United States reported on the existence of 2 human cases of swine influenza A (H1N1) infection. On 23 April, through intensified surveillance efforts, a total of 7 confirmed human cases of swine influenza A (H1N1) infection, were reported.
Rapid risk assessment on influenza A(H7N9) China, 12 April 2013
On 31 March 2013, Chinese authorities announced the identification of a novel reassortant A(H7N9) influenza virus isolated from three unlinked cases of severe respiratory disease in eastern China. This is the first time that human infection with avian influenza virus A(H7N9) has been identified.
Since then, human cases have continued to be reported from eastern China. As of 11 April, there were 38 laboratory-confirmed cases including ten deaths reported from four bordering provinces with a concentration of cases in and around Shanghai. Cases occur sporadically, without obvious epidemiological links. There is currently no confirmed human-to-human transmission.
Rapid risk assessment: human infection with avian influenza A(H5N1) virus, Egypt, 23 December 2014
According to a WHO update published on 4 December 2014, eight new human cases of influenza A(H5N1) have been reported in Egypt, with onset of disease in November 2014, bringing the total for 2014 to 12.
Rapid risk assessment: Outbreaks of highly pathogenic avian influenza A(H5N8) in Europe, 18 November 2016
This Rapid Risk Assessment summarises the epidemiological, virological and environmental information relating to outbreaks of highly pathogenic avian influenza A virus subtype A(H5N8) in Europe up to 15 November 2016.
Swine-origin triple reassortant influenza A(H3N2) viruses in North America
ECDC published an update of its previous rapid risk assessment on Swine-origin triple reassortant influenza A(H3N2) viruses in North America. This rapid risk assessment updates that of 29 November 2011, with a focus on the epidemiological information and a report on progress made to address the diagnostic needs in the European Union that will enable detection of these new viruses.
Rapid risk assessment: Human infection with a novel avian influenza A(H7N9) virus, China - Third update
This updated risk assessment summarises all available information on the novel avian influenza A(H7N9) and assesses the situation as of 27 January 2014, focusing on new developments since the ECDC rapid risk assessments of 3 April 2013, 12 April 2013 and 8 May 2013.
Influenza A(H7N9) virus in China - implications for public health - 7th update, 3 July 2017
Since the notification of a novel reassortant influenza A(H7N9) virus on 31 March 2013, 1 548 laboratory-confirmed cases of human infection with avian influenza A(H7N9) virus have been reported.
Risk assessment: Swine-origin triple reassortant influenza A(H3N2) viruses in North America
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.