Flea Infected With Plague #2
by Science Source
Title
Flea Infected With Plague #2
Artist
Science Source
Medium
Photograph - Photograph
Description
A Thrassis bacci johnsoni flea 38 days after infection with P. pestis (large mass in stomach and esophagus). Thrassis bacci is one of the primary vectors of plague to humans. Yersinia pestis is the bacterium that causes bubonic plague (the black death of the middle ages), primarily a flea-carried pathogen of rats. Infection is rapid, causing swelling in the lymph nodes and leading to septicemia and pulmonary infection. Extensive control measures, directed against the rats as well as their fleas, have essentially banished the plague from Europe but there are still many regions of the world where the disease occurs.
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June 1st, 2013
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