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Published on: October 11, 2022
[Severe encephalitis caused by infection of Rickettsia felis: a case report]
Lili Zhang1, Junhu Zhang, Ming Hu
1Department of Neurology, Affiliated Hospital of Jining Medical University, Jining 272029, Shandong, China. Corresponding author: Feng Xungang,
Abstract:
Rickettsia felis is a Gram-negative prokaryotic organism that is obligatorically parasitic in cells. Cat fleas are the main vector of Rickettsia felis. Clinical symptoms of human infection with Rickettsia felis include fever, fatigue, headache, macular papules, and eschar. There are few reports of serious complications or deaths due to infection of Rickettsia felis. A confirmed case of severe encephalitis caused by Rickettsia felis infection was admitted to neurology department of Affiliated Hospital of Jining Medical University on January 29, 2020. After comprehensive treatment of antiviral by acyclovir, mannitol dehydration to reduce intracranial pressure, human immunoglobulin to regulateimmunity, minocycline hydrochloride capsule, levofloxacin mesylate and sodium chloride against Rickettsia felis infection, control of seizure and pulmonary infection, the patient's condition was improved and then discharged. By summarizing the experience and lessons in the treatment of this patient, we hope to remind everyone to strengthen the understanding of Rickettsia felis infection.
Insights
Rickettsia felis, transmitted by cat fleas, can cause severe encephalitis. Prompt, comprehensive treatment including antibiotics and supportive care led to patient recovery, highlighting the importance of recognizing this infection.
Area of Science:
- Microbiology
- Infectious Diseases
- Neurology
Background:
- Rickettsia felis is an intracellular bacterium primarily transmitted by cat fleas.
- Human infections typically present with mild symptoms like fever and fatigue.
- Severe complications, such as encephalitis, are rare but possible.
Observation:
- A patient presented with severe encephalitis attributed to Rickettsia felis infection.
- The case occurred in the neurology department of Affiliated Hospital of Jining Medical University.
Findings:
- The patient received a multi-faceted treatment regimen.
- This included antiviral therapy (acyclovir), mannitol for intracranial pressure reduction, human immunoglobulin, and antibiotics (minocycline hydrochloride, levofloxacin mesylate).
- Supportive care also addressed seizure control and pulmonary infection.
Implications:
- Successful treatment of severe Rickettsia felis encephalitis was achieved with a combination approach.
- This case underscores the need for increased awareness and understanding of Rickettsia felis infections among healthcare professionals.
- Early diagnosis and comprehensive management are crucial for favorable outcomes in severe cases.
