Description: English: This enlargement depicts a right lateral view of a Thrassis bacchi subsp. johnsoni flea, 38 days after having been infected with Yersinia pestis, formerly known as Pasteurella pestis bacteria. Note the food mass within the stomach and esophagus. Date: not stated. Source:
https://phil.cdc.gov/Details.aspx?pid=2023 https://phil.cdc.gov/Details.aspx?pid=2024. Author: Centers for Disease Control and Prevention.