ABC Medical Center > West Nile Virus

What is West Nile Virus?

16:02 - 6 February , 2024


It is a viral infection caused by mosquitoes; it can be serious, especially if the virus enters the brain, triggering encephalitis or meningitis.

Babies, older adults, and people with suppressed immune systems are more susceptible to infection, but other factors can increase the risk of contracting this disease, such as:

  • Pregnancy.
  • Breastfeeding.
  • Blood transfusions.
  • Chemotherapy.
  • Organ transplant.

Signs and symptoms West Nile Virus

Symptoms can appear between 3 to 12 days after being infected, with the following signs:

  • Sore abdomen.
  • Migraine.
  • Diarrhea.
  • Lack of appetite.
  • Swollen lymph nodes
  • Sore throat.
  • Muscle pain.
  • Nausea.
  • Rash.
  • High fever.
  • Vomit.

The infection can worsen, presenting the following symptoms:

  • Fatigue.
  • Mental confusion.
  • Weakness of muscles, arms, and legs.
  • Fainting.
  • Neck stiffness.

Diagnosis and treatment West Nile Virus

The doctor will analyze your symptoms and clinical history, perform a physical examination, and request blood tests or spinal tap, MRI, and CT scan to confirm that it is a West Nile virus infection.

As it is a virus, there is no direct treatment for this condition, so recovery depends on the patient’s immune system strength, but the following may be indicated:

  • Abundant fluid intake.
  • Bland diet.
  • Antidiarrheal drugs.
  • Painkillers.
  • Medications to inhibit nausea.

In ABC Medical Center Internal Medicine Department, we provide you with health care services with the highest quality and safety, from prevention, diagnosis, timely treatment, and follow-up of infectious, respiratory, endocrinological, dermatological, rheumatic, nephrological, gastrointestinal, and hematological conditions, both chronic-degenerative and acute, through a comprehensive and multidisciplinary model.


  • Ramos C, Falcón LJA. La fiebre del Nilo occidental: una enfermedad emergente en México. Salud Pública México. 2004;46(5):488-490.
  • Hidalgo-Martínez A, Puerto FI, Farfán-Ale JA, et al. Prevalencia de infección por el virus del Nilo occidental en dos zoológicos del estado de Tabasco. Salud Pública México. 2008;50(1):76-85.

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