Methods Microfilarial rate at various levels was investigated first. Then different dose of hetrazan medicated salt was worked out and sent to farmers.
方法先查清各县（市、区）分乡（镇）微丝蚴率，然后分乡制定出海群生药化食盐的剂量，再按规定剂量送盐到户。
Methods Microfilarial rate at various levels was investigated first. Then different dose of hetrazan medicated salt was worked out and sent to farmers.
方法先查清各县（市、区）分乡（镇）微丝蚴率，然后分乡制定出海群生药化食盐的剂量，再按规定剂量送盐到户。
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