H2N3v Virus


RNR: Rick Mercer - Swine Flu Rant

Rick Mercer certainly does a good job promoting the influenza vaccine in this youtube video. I hope you all enjoy it!!

H3N2v Virus: Summing Up!

Photo courtesy of ctvnews.ca

Situation Summary

The Centers for Disease Control and Prevention (CDC) have been following H3N2v virus since its first appearance in U.S. pigs in 2010. From July – December 2011, 12 cases of H3N2v infection were detected in the United States of Indiana, Iowa, Maine, Pennsylvania and West Virginia. Since January 2012 to present 308 cases of H3N2v infection across 11 states have been identified. These infections were mostly associated with prolonged exposure to pigs at agricultural fairs. Cases of limited human-to-human spread of this virus has been detected in the Iowa and West Virginia, however sustained community spread of H3N2v has been identified at this time.

Case Count:

The CDC detailed case count report for H3N2v virus can be reviewed by visiting:


Prevention: Information for fairgoers and swine exhibitors:

The CDC has developed video Podcast outlining recommendations for reducing risk of acquiring H3N2v virus for fairgoers and swine exhibitors:


Current Research:

The following research articles have been recently published in the Emerging Infectious Disease Journal. Both of these journal articles studied recent agricultural events and the potential threats to human health and epidemic risks.

Wong KK, Greenbaum A, Moll ME, Lando J, Moore EL, Ganatra R, et al. (2012). Outbreak of influenza A (H3N2) variant virus infection among attendees of an agricultural fair, Pennsylvania, USA, 2011. Emerg Infect Dis, 8:(12), 1937-1944. Retrieved from http://wwwnc.cdc.gov/eid/article/18/12/pdfs/12-1097.pdf

Bowman AS, Nolting JM, Nelson SW, Slemons RD. (2012). Subclinical influenza virus A infections in pigs exhibited at agricultural fairs, Ohio, USA, 2009–2011. Emerg Infect Dis [Internet]. 18:(12), 1945-1950. Retrieved from http://wwwnc.cdc.gov/eid/article/18/12/pdfs/12-1116.pdf


Source: Centers for Disease Control and Prevention.

H3N2v: Frequently Asked Questions

1.       What is H3N2v virus?

H3N2v virus is a variant of the H3N2 virus however it is quite different from the seasonal H3N2 virus which circulates among humans. Normally this variant virus occurs in pigs and it is often referred to as “swine influenza”. However on rare occasions a pig may infect a human.


2.       What are the symptoms of H3N2v virus?

The symptoms of H3N2v virus are similar to seasonal influenza virus. Common symptoms include sudden onset of fever, along with cough, sore throat, myalgia, and arthralgia. In children and the elderly, gastrointestinal symptoms may also be present.

3.       How is H3N2v virus spread?

The H3N2v virus can spread to humans from pigs. The virus is spread in the same manner as seasonal influenza virus through close contact with an infected source via coughing and sneezing. Although rare, H3N2v has been known to spread from human to human contact.

4.       How can I protect myself from H3N2v virus?

You can protect yourself from H3N2v virus by practicing good hand washing and avoiding contact with pigs, especially pigs that appear ill. If you must come into contact with pigs, you should take measure to protect yourself such as wearing protective equipment such as gloves.

5.       Does the seasonal Influenza 2012-2013 protect me from H3N2v virus?

No, the seasonal influenza vaccine for 2012-2013 does not protect you from H3N2v virus.

Information outlined above courtesy of Flu.gov at http://www.flu.gov/about_the_flu/h3n2v/index.html

Nov 1

Update: Canadian Seasonal Influenza Trends for 2012-2013

Currently despite limited activity of the H3N2v virus, Influenza virus is receiving increased media over the past month. The province of Newfoundland and Labrador Department of Health and Community Services released it’s annual media statement on October 19, 2012 encouraging eligible residents of NL to roll up their sleves and receive their annual influenza vaccine.


Publicly funded influenza clinics began to open their doors to the public following this media release. Currently in the province there have been two confirmed cases of Influenza A (cumulative total for week 42 - FluWatch 2012-2013):


In Canada, as of August 26, 2012 reports of influenza virus have been confirmed by all Provinces (information currently unavailable for the Territories) except for Nova Scotia, Prince Edward Island and New Brunswick.

Nov 1

Case Counts: H3N2v Virus

According to the Centers for Disease Control and Prevention (CDC) there have been no new cases of H3N2v influenza virus reported in the U.S. since September 7, 2012. To date for 2012 there have been a total of 307 cases of H3N2v influenza viruses reported in ten of the U.S. states. The majority of the cases that have been isolated have been associated with contact to swine (i.e. fairs and petting farms) although human-to-human transmission is known. However, ongoing human-to-human transmission has not been identified (information courtesy of CDC - refer to link below for complete details).


To date the Public Health Agency of Canada (PHAC) have not reported either positive H3N2v Influenza virus.

Emerging news!

October 5, 2012: Google Flu Trends for Canada. CBC News - Health


September 28, 2012: Influenza A (H3N2) Variant Virus - Related Hospitalizations - Ohio, 2012 - CDC (MMWR Weekly Report)


August 31, 2012: New swine flu virus linked to death in Ohio. CBC News - Health


April 13, 2012: Swine Flu cases worries U.S. scientist. CBC News - Health



Virus Characteristics

H3N2v virus is a novel swine influenza virus which contains a gene from the pandemic H1N1 2009 (pH1N1) virus.

World Health Organization (WHO) - Disease Outbreak News


Center for Disease Prevention and Control (CDC)