Please choose the correct ending to complete the given sentence: Health: [header] How to prevent malaria [title] Determine whether you're at risk. [step] If you're traveling to a country with high rates of malaria, it's important to take precautions. Malaria is preventable if you take the right medication before, during, and after exposure to dangerous mosquitoes.

Ending1: If you've ever been bitten by a mosquito, felt unwell after (or upon) interaction with a mosquito, or experienced attention to the eyes or nose, get professional treatment immediately. Contact a doctor or go into a medical emergency line in your area. Ending2: The following regions are high-risk : [substeps] Africa central and south america parts of caribbean asia, eastern europe, and the south pacific [title] Schedule a doctor's appointment. [step] If you are visiting one of these places, schedule an appointment with your doctor six weeks in advance of your trip. Ending3: [substeps] Since malaria naturally occurs in mosquito populations, it is a good idea to watch out for their habits. If a mosquito gets stung or scratches you, this mosquito could spread the infection and infect your mosquito pack with the disease. Ending4: However, the average dosage for most people might be less than 60 mg per day. Your recommended dosage is five to 10 mg per day.

Answer format: ending1/ending2/ending3/ending4