A BBC correspondent has seen at least 10 witchdoctors are working openly.
It comes days after the latest murder of an albino man in Tanzania brought the national death toll to at least 40 since mid-2007.
The killers reportedly sell albino body parts - including limbs, hair, skin and genitals - to witchdoctors.
Prime Minister Mizengo Pinda said on Friday the government was revoking the licences of all traditional healers with immediate effect.
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