Travelers to Africa are advised to take chloroquine phosphate before beginning the trip and continuing the medication while in Africa. This action is an example of:

Question

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By prescribing a prophylactic drug for travelers, if a parasite is encountered, the drug will kill the parasite before it can establish an infection. By continuing the treatment after the traveler leaves the endemic area, there will be continued prevention so that any last-minute invasion by a parasite will also be counteracted.

Travelers to Africa Are Advised to Take Chloroquine Phosphate Before