Why is the risk of Rift Valley Fever introduction through importation of live animals low?

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Multiple Choice

Why is the risk of Rift Valley Fever introduction through importation of live animals low?

The main point here is that strict import restrictions on live animals provide the strongest barrier against introducing Rift Valley Fever. In many RVF-endemic regions, controls designed to prevent foot-and-mouth disease also limit or ban the movement of live hoofed animals. By blocking this direct route—carrying infected animals into a new country—the risk of introducing RVF drops significantly, because an infected animal entering a population is a primary way the virus could start an outbreak. Rift Valley Fever can infect animals and is not limited to mosquito transmission; animals themselves can harbor and spread the virus, and humans can become infected through contact with infected animal tissues. The idea that RVF cannot infect animals is incorrect, and while mosquitoes are important vectors, they are not the only route. Screening all shipments for RVF before shipment is not universally guaranteed or foolproof in practice, so relying on a blanket screening policy isn’t as robust as a broad import ban aimed at FMD control.

The main point here is that strict import restrictions on live animals provide the strongest barrier against introducing Rift Valley Fever. In many RVF-endemic regions, controls designed to prevent foot-and-mouth disease also limit or ban the movement of live hoofed animals. By blocking this direct route—carrying infected animals into a new country—the risk of introducing RVF drops significantly, because an infected animal entering a population is a primary way the virus could start an outbreak.

Rift Valley Fever can infect animals and is not limited to mosquito transmission; animals themselves can harbor and spread the virus, and humans can become infected through contact with infected animal tissues. The idea that RVF cannot infect animals is incorrect, and while mosquitoes are important vectors, they are not the only route. Screening all shipments for RVF before shipment is not universally guaranteed or foolproof in practice, so relying on a blanket screening policy isn’t as robust as a broad import ban aimed at FMD control.

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