Epidemiological update: H3N2v cases in Ohio, US, 4 September 2014
In August 2014, the US Centers for Disease Control and Prevention (CDC) reported two laboratory-confirmed human infections with a A(H3N2) variant influenza virus of swine origin A(H3N2)v in Ohio, USA.
Risk assessment guidelines for infectious diseases transmitted on aircraft (RAGIDA): Influenza
This report which is part of the RAGIDA project (Risk Assessment Guidance for Infectious Diseases transmitted on Aircraft) provides viable options for decision-makers when faced with the choice of whether to contact trace air travellers and crew that were potentially exposed to infectious diseases during a flight.
- Avian influenza virus
- Infectious diseases on aircrafts
- Influenza A (H1N1)2009
- Influenza A(H5N1) virus
- Influenza A(H5N2) virus
- Influenza A(H5N8) virus
- Influenza A(H7N9) virus
- Influenza in humans, avian origin
- Influenza in humans, pandemic
- Influenza in humans, seasonal
- Influenza in humans, swine origin
- Risk assessment guidelines for infectious diseases transmitted on aircraft (RAGIDA)
- Travellers' health
Scientific opinion on the possible risks posed by the influenza A (H3N2v) virus for animal health and its potential spread and implications for animal and human health
Swine are an important host in influenza virus ecology since they are susceptible to infections with both avian and human influenza A viruses.
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.
Epi update: Increase in number of human cases of variant influenza A(H3N2)v virus infection in the United StatesArchived
Since July 2011, 155 cases of the variant influenza A(H3N2) virus (A(H3N2)v) have been detected in the US: Hawaii (1), Indiana (113), Iowa (3), Maine (2), Ohio (30), Pennsylvania (3), Utah (1), and West Virginia (2). Most cases reported in Indiana and Ohio are recent cases. No human to human transmission has been determined among these recent cases.
Influenza A (H3N2)v Virus in Humans and Swine in the United States – an updateArchived
A report in the US Centers for Disease Control and Prevention (CDC) MMWR this week describes the investigation of mild respiratory illness among swine and people at a county fair in Indiana, USA between 8 and 14 July 2012. This is an important report as it is very clearly documents simultaneous detection of H3N2v influenza viruses in humans and swine in close contact.
CNRL in silico exercise to determine the capabilities of network laboratories to detect triple reassortant swine origin influenza A(H3N2) viruses
Following the emergence of swine influenza A(H3N2) variant (v) viruses with sporadic human infections in North America, the Community Network of Reference Laboratories (CNRL) and the Animal Health and Veterinary Laboratories Agency completed an exercise to assess the CNRL’s capability to detect novel reassortant and circulating triple reassortant swine viruses (TRA) in humans.
Influenza A(H3N2)v laboratory detection questionnaire results
Following the emergence of swine influenza A(H3N2) variant (v) viruses with sporadic human infections in North America, ECDC and the Community Network of Reference Laboratories (CNRL) disseminated a questionnaire to explore the RT-PCR capability of influenza reference laboratories in EU/EEA countries to detect A(H3N2)v viruses in their day-to-day diagnostics and to subtype them as swine-origin variant viruses.
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.
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.