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Sleeping sickness. View of a painful nodule on a teenage girl's leg showing the initial site of African sleeping sickness (trypanosomiasis) infection. The disease is caused by Trypanosoma sp., a parasitic protozoan. The protozoa are passed onto humans by blood-sucking tsetse flies, Glossina sp., when they feed. The leg sore marks this feeding site. The protozoa infect the blood, lymph nodes, heart and brain causing a fever. Nervous system damage leads to lethargy and tremors. Without treatment, fatal damage to the heart or brain results. Photographed in Uganda.
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Creative#:
TOP10201335
Source:
達志影像
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RM
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