Belgium remains unscathed from the disease at the level of pig farms.
According to Politico, the arrival of ASF in Western Europe has always been the worst fear for many in the pork industry, in part because it could mean import bans from key non-EU markets.
Germany earlier this year issued a decree to allow hunters to shoot wild boar year-round to stop the animals, which can carry African swine fever, from passing the deadly infection on to farm pigs.
The most recent cases in Europe could be linked to food thrown away by people who had travelled from zones where the disease is present, Belgium's food safety agency said in its statement.
In the aftermath, the swine breeders had also sounded the alarm a week ago on the risks of spread in France and Western Europe of the virus, which affects eight countries in eastern Europe (Bulgaria, Estonia, Hungary, Latvia, Lithuania, Poland, Czech Republic, Romania), Russia and China.
Since 2014 there has been a steady rise in cases of swine fever across Europe.
However, to palliate the current virus from spreading, the SPW is preparing further measures to, inter alia, avoid the dispersal of wild boars from the infected zone as well as the provisions relating to hunting.
"A team of experts was requested by them and will be deployed this weekend", she said, adding that Health Commissioner Vytenis Andriukaitis would meet ministers of Belgian regions Wallonia and Flanders on Monday.
The fight against the disease is not a public health issue but an animal and economic health issue.
"We know that ASF can be spread through contaminated human food, so it is important to remain vigilant and discourage all farm workers from discarding human food into fields or areas where pigs or wild boar could get access".
It added: "Biosecurity in pig farms is essential and the FASFC ensures that it is permanently properly insured".
Mandy Nevel, veterinary manager with Agricultural and Horticultural Development Board (AHDB) which offers support to Britain's food producers, said: "It is extremely concerning that African Swine Fever has been identified in Belgium".