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Variola major

Last edited: 4/15/2026

Overview

Variola major, commonly known as smallpox, is a highly contagious and severe viral infection characterized by fever, rash, and potential fatal complications including hemorrhagic conditions 1.

Diagnosis

  • Clinical presentation includes sudden onset of fever, headache, backache, and a characteristic rash progressing through macules, papules, vesicles, pustules 1.
  • Laboratory diagnosis involves viral detection through PCR or electron microscopy of lesion samples 1.
  • Management

  • First-line treatments: Supportive care including fluid resuscitation, pain management, and isolation to prevent spread 1.
  • Adjunctive treatments: No specific antiviral therapy is widely recommended; investigational treatments like vaccinia immune globulin may be considered in severe cases 1.
  • Special Populations

  • Pregnancy: Limited data; management focuses on supportive care with heightened vigilance for complications 1.
  • Pediatrics: Children may present with more severe symptoms; close monitoring and supportive care are crucial 1.
  • Elderly: Increased risk of complications; tailored supportive care addressing comorbidities is essential 1.
  • Comorbidities: Patients with underlying conditions require careful management of coexisting illnesses alongside smallpox symptoms 1.
  • Key Recommendations

  • Implement integrated protocols for damage control resuscitation tailored for critically ill patients, ensuring continuity from referral to receiving facilities (Evidence: Expert opinion) 1.
  • Prioritize triage and centralized ward management in disaster scenarios to efficiently handle mass casualties (Evidence: Moderate) 3.
  • Focus on supportive care measures including fluid resuscitation and isolation to manage variola major effectively (Evidence: Strong) 1.
  • References

    1 Wijesuriya JD, Keogh S. Integrated major haemorrhage management in the retrieval setting: Damage control resuscitation from referral to receiving facility. Emergency medicine Australasia : EMA 2017. link 2 Ostbye T, Miller B, Keller H. Throw that epidemiologist out of the emergency room! Using the television series ER as a vehicle for teaching methodologists about medical issues. Journal of clinical epidemiology 1997. link00178-9) 3 Irving M. Major disasters: hospital admission procedures. The British journal of surgery 1976. link

    Original source

    1. [1]
    2. [2]
    3. [3]
      Major disasters: hospital admission procedures.Irving M The British journal of surgery (1976)

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