|1992||Initial eradication attempts successfully performed in four farrow-to-finnish herds|
|1994–1997||Screening and eradication of Mhyo in nucleus and multiplier herds|
|1997||The farmer-owned abattoirs initiate a project for trading high-health feeder piglets.|
All nucleus and multiplier herds free from Mhyo by the end of the year.|
Regional eradication of Mhyo in commercial herds is initiated in counties with low herd prevalence of Mhyo (Vestfold, Telemark, Buskerud and Trøndelag).
|1999||A premium of 14% is introduced for high-health feeder piglets documented free from Mhyo, toxinproducing Pasteurella multocida, Sarcoptes scabiei and Brachyspira hyodysenteriae in both private end farmer-owned abbatoirs.|
|2000||National eradication program with the aim of freedom from Mhyo in the entire pig population by the end of 2005 is decided.|
|2001||Action plan with the aim of known Mhyo status in all sow herds before the end of 2002 is decided.|
|2002||Mycoplasma project Rogaland is initiated.|
All herds in 9 of 18 counties free from Mhyo (Table 1)|
Large multiplier herd in Rogaland reinfected.
A deduction of 100 NOK per finisher pig slaughtered from herds not yet declared free from Mhyo is implemented by all abattoirs.|
All sow herds tested free from Mhyo by the end of the year.
Retesting of all sow herds in Rogaland county.|
October: New reinfection in the multiplier herd in Rogaland including five contact herds.
Retesting of all pig herds in Rogaland.|
April: A sow pool system tested positive, eradication performed by total depopulation and repopulated with pigs from herds documented free from Mhyo
First year without any Mhyo positive samples|
National surveillance program for Mhyo is initiated