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CDC recommends Ivermectin for most refugees entering USA
[CitizensJournal] dosage recommended is 200 micrograms/per Kg of weight of the person daily for two days before coming to USA or at entry point

this is for parasites but it shows the CDC is OK with this dosage
Posted by: Lord Garth 2021-09-11
http://www.rantburg.com/poparticle.php?ID=612238