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Home News New Mexico Department of Health investigates Shigella outbreak
Paul Rhien
505-470-2290 Office

New Mexico Department of Health investigates Shigella outbreak

January 13, 2017 - Emerging Infections - Information

Shigellosis is an infectious disease caused by a group of bacteria called Shigella. This Centers for Disease Control web page includes details about Shigella (what it is, prevention and control, publications, data, and statistics). Cases continue rising in southeastern New Mexico

The New Mexico Department of Health (NMDOH) continues investigating an ongoing increase of cases of Shigella  (a.k.a., Shigella sonnei or Shigellosis) in Lea, Chaves, and Eddy counties. Since the department last reported on the outbreak in November, the number of diagnoses has risen from 140 confirmed and probable cases to 196.

Shigellosis is an extremely contagious bacterial disease that causes diarrhea, fever, nausea, and sometimes vomiting, cramps, and blood poisoning from toxins produced by the bacteria.

Most cases since the beginning of the outbreak have been among preschool and school-aged children. However, recent data indicate that the infection has begun to affect the wider community. NMDOH encourages individuals with symptoms to get tested if they are experiencing signs and symptoms of Shigella infection.

Oftentimes, diarrhea will contain blood and mucus. The time between exposure to Shigella and symptom onset varies from one to seven days, but is typically beteween one and three days. Possible complications from Shigella infections include post-infectious arthritis, blood stream infections (although rare), seizures, and hemolytic-uremic syndrome (HUS), a life-threatening disease than can cause kidney damage.

An infected person can shed the bacteria in their stool when they have diarrhea and up to a month after the diarrhea has gone away. Shigella can be spread in the following ways:

  • Infected persons can spread Shigella by not washing their hands after going to the bathroom and then handling food that other people will eat.
  • Caretakers can become infected by changing the diaper of an infected child or caring for an infected person. The caretaker’s hands may get some small amount of stool and bacteria on their hands, and without proper hand hygiene, spread the bacteria to everything they touch afterwards (including their mouths).
  • Swallowing recreational water (for example a splash pad, pool, and/or lake) that was contaminated by infected fecal matter.
  • Exposure to feces through sexual contact.

“If your child is sick, please do not take your child to daycare or school.  This will only spread this illness to other children and their families,” advises Department of Health Secretary Lynn Gallagher. “If you think that your child may have Shigella, please take them to their healthcare provider to be tested.”

You can decrease your chance of coming into contact with Shigella by doing the following:

  • Washing your hands frequently, especially after using the bathroom, changing a diaper, or before preparing and/or eating food.
  • Promptly cleaning possible contaminated surfaces with household chlorine bleach-based cleaners.
  • Washing soiled clothing and linens.
  • Avoiding food or water from sources that may be contaminated.
  • Not sending sick children to school, daycare, or local pool and splash pads if they have persistent diarrhea.  

Additional information on Shigellosis is available from the Centers for Disease Control and Prevention (CDC) website.

Media Contact

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El Departamento de Salud de Nuevo México investiga un brote de Shigella