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Yersinia pestis |
This photograph depicts the colonial morphology displayed by Gram-negative Yersinia pestis bacteria, which was grown on a medium of sheep’s blood agar, for a 72 hour time period, at a temperature of 37°C.
Y. pestis bacteria cause the infectious disease known as plague, affecting both humans and animals.
Transmission: plague is usually transmitted to humans by the bites of infected rodent fleas. During rodent plague outbreaks, many animals die and their hungry fleas seek other sources of blood to survive. Persons and animals that visit places where rodents have recently died from plague risk getting the disease from flea bites.
Text: CDC
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Microscopy:
Gram-negative, non-spore-forming rods. |
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