Exhibition pigs should be isolated from herd mates and observed for clinical signs of influenza for at least seven days after an exhibition to prevent transmission to pigs that did not attend the fair.
In the wake of the so-called “swine flu” a European surveillance program was carried out in 2013-2015: H1N1pdm is present in several European countries, and at particularly high prevalence in Britain and Ireland.
The reasons behind the vaccination against influenza virus on a group of fattenig units with recurrent respiratory clinical pictures that belong to an integrated production system are discussed. Impact on production parameters and economic results are also shown.
In the United States, there are 17 genetic clades that have emerged and persisted following spillover events from non-swine (namely human) hosts and subsequent ecological and evolutionary processes
Inactivated vaccines can be effective if used in conjunction with other practices, such as controlled movement of animals and people and with careful analysis of whether the vaccine antigen is a good antigenic match with the circulating strain.
Swine influenza viruses are diverse at genetic and antigenic level, resulting in a limited cross-reactivity in viruses sharing a common ancestor or belonging to a same subtype.
There are many open topics, such as: 1) what is the impact of the disease in endemic situations at the reproductive level (irregular return to estrus / fertility), especially in gilts; or 2) what is the productive impact in farrowing units, especially when we know that suckling piglets can play a role as a reservoir of the virus in an endemically infected farm.