| Studies in Costa Rica showed that screwworm flies prefer thick, densely forested areas to open pastures. |
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| They had grown from eggs planted by the fly, a New World Army screwworm fly, in Peru. |
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| You one-W deworm when infested By two-W dewworms, much detested, But I'll bet a sore with screwworm you never saw a three-W dewwworm. |
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| The sterile insect technique was first used to control the screwworm fly in the southern United States and other areas. |
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| He joined FAO in 1986 and shouldered several responsibilities, the last being Senior Operations Officer for the New World Screwworm Eradication Program. |
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