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Is a protozoan infection contagious?

Person-to-person contact can spread some types of protozoan infection. It usually requires exposure to an infected person's blood. The condition can be spread by a tainted blood transfusion or when sharing a needle with someone infected. It is far more common, though, to get a protozoan infection through contact with a biting insect than by catching it from another human being.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.