Eight of the specimens were found in the northeast of the country, Vidzeme province, while three came from the southeast, Latgale province, where the contamination first broke out during the summer.
The confirmations came just two days before government plans to lift the state-of-emergency regime affecting almost half of the country, stretching first from the eastern borders with Russia and Belarus in July and extended to the very outskirts of Riga by September's end.
Since September no further cases of ASF among domestic pigs have been found, despite ongoing discoveries of wild boar specimens found to have been infected with the virus, which is deadly to both species of swine, but harmless to humans.
The strict quarantine and sanitary measures imposed by the state-of-emergency were enforced by PVD inspectors backed up by law enforcement authorities, prompting many pig-farmers to cull their herds and liquidate their pens entirely.