Information from reliable sources is usually backed up quickly by other reliable sources. Consider the scope and the specifics. The FDA helps make sure safe limits are maintained. If so, you need to throw out or return only those items with the affected lot number. Consider the nature of science.
Most research questions take years to investigate.
Before something is taken as fact, the results of an investigation must be repeated by others. Science controversies do exist. Different scientists interpret data differently. Food safety messages based on research can change as scientists discover new information. Researchers draw broad conclusions from studies of large groups of people.