The Centers for Disease Control and Prevention (CDC) has issued an alert about an outbreak of trench fever.
The CDC reports a serious disease transmitted by body lice, primarily affecting homeless individuals and organ transplant recipients.
This announcement is based on three recent studies highlighting the elevated risk of contagion in these vulnerable populations.

Trench fever, caused by the bacterium Borrelia recurrentis, can lead to severe complications and is particularly concerning in contexts where living conditions are precarious, such as in shelters or encampments. The CDC urges healthcare professionals to be vigilant for potential cases and to implement appropriate preventive measures to control the spread of this disease.
What is happening?
The Centers for Disease Control and Prevention (CDC) has issued an alert about an outbreak of a serious lice-borne disease, specifically among homeless populations in the United States.
What is the disease?
The disease in question is Bartonella quintana, also known as trench fever. This bacterium is found in the feces of body lice and can cause:
- Skin lesions: Rashes, ulcers, and other skin conditions.
- Fever: Elevated body temperature.
- Bone pain: Discomfort and pain in the bones.

Why does it affect homeless individuals?
Homeless individuals are more vulnerable to this type of infection due to:
- Difficulty accessing adequate hygiene: Limited access to clean water and soap makes it difficult to eliminate lice and their feces.
- Precarious living conditions: Lack of stable housing and overcrowding facilitate the spread of lice and the diseases they transmit.
- Infestation primarily occurs in people who cannot bathe regularly or change into clean clothes, as lice live in clothing and move to the skin to feed.
What can be done?
It is crucial to take measures to prevent and control this situation:
- Greater access to hygiene services: Provide showers, laundries, and personal hygiene products to homeless individuals.
- Early treatment of lice infestations: Detect and treat lice cases promptly to prevent the spread of the disease.
- Awareness campaigns: Inform the public about the risks of lice, how to prevent infestations, and when to seek medical attention.
- Research: Continue studying the transmission of Bartonella quintana and develop better treatments.
- Preventive measures include bathing regularly, washing and drying clothes and bedding with hot water, and avoiding sharing infested garments or bedding.

What else can we know?
For more detailed and updated information on this topic, I recommend consulting the CDC’s official sources.
In terms of treatment, in addition to improving hygiene, specific medications (pediculicides) can be used to eliminate lice, although they are often unnecessary if proper cleaning measures are implemented.
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