# Rickettsiosis outbreaks in Mexico

> Live situation record from CLSTR: https://clstr.news/situations/rickettsiosis-outbreaks-in-mexico
> Updated: 2026-10-13T17:44:34.000Z. Sources: 7. Developments: 2.

Health authorities in Mexico have reported cases of rickettsiosis, a tick-borne disease. In Sinaloa, officials confirmed 32 cases and eight deaths, noting that the disease is highly aggressive and often misdiagnosed as dengue. Fatalities were concentrated in the southern area of Culiacán, Guasave, and El Fuerte, with infection primarily linked to ticks on uncontrolled domestic animals.

In Nuevo León, health officials issued a public health alert following the death of a 15-year-old girl and the critical condition of a nine-year-old boy. Authorities warned that symptoms such as fever, body aches, and abdominal pain can mimic the flu, emphasizing the need for early medical intervention and preventive measures like pet deworming and yard cleaning.

## Timeline

### 2026-10-13: Nuevo León health authorities report death and critical illness linked to rickettsia

A 15-year-old girl has died and a nine-year-old boy is in critical condition in Nuevo León, Mexico, due to suspected rickettsiosis transmitted by ticks.

2 sources. https://clstr.news/cluster/nuevo-len-health-authorities-report-death-and-critical-illness-linked-to-rickettsia

### 2026-09-15: Sinaloa reports 32 rickettsiosis cases and eight deaths

Sinaloa has recorded 32 cases of rickettsiosis and eight deaths this year, with officials warning of tick-borne transmission from uncontrolled pets.

5 sources. https://clstr.news/cluster/sinaloa-reports-32-rickettsiosis-cases-and-eight-deaths

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Cite as: Rickettsiosis outbreaks in Mexico. CLSTR, https://clstr.news/situations/rickettsiosis-outbreaks-in-mexico