Peanut Butter contaminated with Salmonella

Yesterday , I have seen Health Secretary Reynaldo Duque in tv news that he was in one grocery store collecting all the peanut butter spread. He said that Yummy peanut butter, Ludys and sweet creamy butter are not yet safe to eat this peanut butter because it contents Salmonella bacteria.
I am wondering how come this peanut butter contaminated with Salmonella because this kind of organism is came from infected feces of human and animals in eggs/egg products, in meat/meat products, in poultry. I have heard that maybe the raw peanut butter already contaminated with the bacteria before it is imported here in the Philippines. The peanuts were just only supplied from other country.
Salmonellosis refers to infections caused by bacteria of the Salmonella.
A person who accidentally ingested contaminated food with salmonella, manifest after 4-8 hours ingestion with a sudden onset of colicky abdominal pain and loose watery stool. Followed by high grade fever and chilly sensation. Patient also become nauseated and vomits a lot. There are also manifestations due to infectious agents localizing in any body tissue like abscesses , cholicystitis, arthritis, endocarditis, meningitis, pericarditis , pneumonia and etc.