What are the symptoms of murine typhus?

Murine typhus is a rare disease, so patients generally have little scientific knowledge about it when infected. What are the symptoms of murine typhus?

What Are the Symptoms of Murine Typhus?

Murine typhus, also known as endemic typhus, mainly presents with symptoms such as headache, fever, and rash. The primary pathogen is Rickettsia mooseri (Rickettsia mooseri). This disease can cause body temperature to rise to around 39°C, resulting in remittent or continuous fever, headache, generalized body aches, and conjunctival congestion. A rash appears as pink maculopapular lesions, which typically last 7–10 days before fading without leaving scars. If the nervous system is affected, it may lead to impaired consciousness.

The causative agent of murine typhus is Rickettsia mooseri. Its morphology, staining characteristics, biochemical reactions, culture requirements, and resistance are all similar to those of other rickettsiae, although it rarely forms long chains. However, there are differences in the pathological lesions observed in experimental animals and in antigenicity. Both contain 3/4 specific particulate antigens and 1/4 specific soluble antigens; the latter is heat-resistant and shared by both, which may lead to cross-reactions. The heat-resistant particulate antigen has specificity and can be differentiated using complement fixation tests.

The scrotal reaction in guinea pigs caused by Rickettsia mooseri is much more pronounced than that caused by Rickettsia prowazekii, and it is more pathogenic to mice and rats. When the pathogen is inoculated into the peritoneal cavity of mice, it can cause peritonitis and rickettsemia, and the organism can be found in various organs. We hope this information is helpful to you. Wishing you good health and happiness!