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Where are cases of classical swine fever (CSF) still occurring in domesticated pigs?
Canada, New Zealand, Australia, and Asia
Common in many countries, but eradicated from the U.S. and parts of Europe
This disease is common in some regions, notably Haiti and Central America
Present only in Europe and parts of Asia
The correct answer is: Common in many countries, but eradicated from the U.S. and parts of Europe
The selection highlighting that classical swine fever (CSF) is common in many countries while being eradicated from the U.S. and parts of Europe accurately captures the current global situation concerning this disease. CSF is a highly contagious viral disease affecting domestic and wild pigs and has led to significant economic losses in affected regions. In most developed countries, like the United States and parts of Europe, stringent biosecurity measures, surveillance, and vaccination practices have effectively eliminated the disease from their swine populations. This successful eradication contrasts with its presence in other regions where outbreaks continue, particularly in developing countries that may lack the infrastructure for effective disease control. The choice referring to the disease's prevalence in some specific regions like Haiti and Central America does not encompass the wider global context of CSF. While it may be more accurately described in specific reports, it does not reflect the overall truth that CSF is considered common in numerous countries beyond those regions. Similarly, referencing its presence only in certain geographical locations like Europe and parts of Asia could misrepresent the widespread occurrence of CSF in many countries worldwide. Thus, the correct answer succinctly recognizes that while CSF remains prevalent in various regions, effective control measures have successfully eradicated the disease from certain areas,