Sign up now!
Don't show this again
Download the report!Continue to Site >
or wait 7 secs

Thank you for confirming your subscription!

(And remember, if ever you want to change your email preferences or unsubscribe, just click on the links at the bottom of any email.)

We’re glad you’re enjoying Pig Health Today.
Access is free but you’ll need to register to view more content.
Already registered? Sign In
Tap to download the app


Collect articles and features into your own report to read later, print or share with others

Create a New Report


Read Later

Create a new report

Report title (required) Brief description (optional)
follow us

You must be logged in to edit your profile.

Favorites Read Later My Reports PHT Special Reports
Pig Health Today is equipped with some amazing (and free) tools for organizing and sharing content, as well as creating your own magazines and special reports. To access them, please register today.
Sponsored by Zoetis

Pig Health Today | Sponsored by Zoetis

Featured Video Play Icon

Understanding swine flu’s diversity key to better control programs

Watch the interview

The number of swine influenza cases as well as the diversity of circulating flu viruses have increased in the past several years, based on experience at Iowa State’s Veterinary Diagnostic Laboratory, Phillip Gauger, DVM, associate professor at the university, told Pig Health Today.

Swine influenza is an RNA virus, which makes it prone to constant change in one of two ways. The virus either undergoes antigenic drift — natural mutations — or antigenic shift, which occurs when segments from two different viruses come together to form a new genome, Gauger explained.

Both processes contribute significantly to the antigenic diversity seen in the field and make swine flu harder to control. Each of the two major subtypes of swine flu — H1 and H3 — have different genetic “clades” or groups.  It’s important to know which clade is circulating on a farm so the best decisions can be made regarding vaccination, he said, noting that more veterinarians are obtaining genetic sequencing of flu viruses.

Even though there are genetic differences in the swine flu strains circulating, they tend to present similarly with coughing and respiratory distress — but there are some differences, depending on various factors. For instance, endemic infections tend to come on slowly and manifest primarily in the nursery, while new viruses — or new clades — might cause clinically more severe cases.

Gauger also told Pig Health Today about two interactive websites that will help veterinarians diagnose and manage swine flu. One is ISU FLUture, from Iowa State University, and the other is Disease Bioportal, from the University of California–Davis.


Posted on August 3, 2017

tags: , , , ,

You must be logged in to edit your profile.

Share It
It’s not unrealistic to say that if you checked the nasal cavities or tonsils of any group of pigs, you would find Strep suis. While the strain and impact can vary widely, this commensal bacterium is on virtually every hog farm.

Click an icon to share this information with your industry contacts.
Google Translate is provided on this website as a reference tool. However, Poultry Health Today and its sponsor and affiliates do not guarantee in any way the accuracy of the translated content and are not responsible for any event resulting from the use of the translation provided by Google. By choosing a language other than English from the Google Translate menu, the user agrees to withhold all liability and/or damage that may occur to the user by depending on or using the translation by Google.