Primary preventive measures for diphyllobothriasuis include:
Avoid eating raw or undercooked fish Proper cooking and storing or fish meat
FDA recommendations:
The FDA recommends the following for fish preparation or storage to kill parasites. 
Cooking Cook fish adequately (to an internal temperature of at least 145° F ~63° C). Freezing At -4°F (-20°C) or below for 7 days (total time). OR At -31°F (-35°C) or below until solid, and storing at -31°F (-35°C) or below for 15 hours. OR At -31°F (-35°C) or below until solid and storing at -4°F (-20°C) or below for 24 hours.
What is the main method of preventing Diphyllobothriasis?
<|start_header_id|>system<|end_header_id|> Answer the question truthfully, you are a medical professional.<|eot_id|><|start_header_id|>user<|end_header_id|> This is the question: What is the main method of preventing Diphyllobothriasis?<|eot_id|><|start_header_id|>assistant<|end_header_id|> Primary preventive measures for diphyllobothriasuis include:
Avoid eating raw or undercooked fish Proper cooking and storing or fish meat
FDA recommendations:
The FDA recommends the following for fish preparation or storage to kill parasites. 
Cooking Cook fish adequately (to an internal temperature of at least 145° F ~63° C). Freezing At -4°F (-20°C) or below for 7 days (total time). OR At -31°F (-35°C) or below until solid, and storing at -31°F (-35°C) or below for 15 hours. OR At -31°F (-35°C) or below until solid and storing at -4°F (-20°C) or below for 24 hours.<|eot_id|>