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[G1 mumps virus outbreak in the province of Almeria in 2005]

Pilar Barroso García1, Ma Angeles Lucerna Méndez, Amparo Navarro Monzón

  • 1Sección de Epidemiología, Area de Gestión Sanitaria Norte de Almería. mariap.barroso.sspa@juntadeandalucia.es

Revista Espanola De Salud Publica
|March 19, 2008
PubMed
Abstract

Insights

Despite high measles, mumps, and rubella (MMR) vaccination rates, an mumps outbreak occurred in Almeria, Spain. Over half of the 145 reported cases involved vaccinated individuals, primarily affecting the Spanish-born population.

Area of Science:

  • Epidemiology
  • Public Health
  • Infectious Diseases

Background:

  • Despite high measles, mumps, and rubella (MMR) vaccination coverage in Spain, mumps outbreaks continue to occur.
  • This study investigates a 2005 mumps outbreak in Almeria province, Spain.
  • The research evaluates the impact of the outbreak on the vaccinated population.

Purpose of the Study:

  • To describe the characteristics of the 2005 mumps outbreak in Almeria.
  • To assess the proportion of vaccinated individuals affected during the outbreak.
  • To identify the genotype of the mumps virus responsible for the outbreak.

Main Methods:

  • A descriptive study design was employed, analyzing reported mumps cases.
  • Data collected included demographics, symptoms, vaccination status, and diagnostic testing.
  • Epidemiological and statistical methods were used to analyze incidence rates and compare means.

Main Results:

  • A total of 145 mumps cases were reported across 17 municipalities.
  • The highest incidence rate was observed in the 10-14 age group (405 per 100,000).
  • Over half (52.4%) of the cases had received at least one MMR vaccine dose, with 69.7% having received two doses.

Conclusions:

  • The outbreak was caused by the G1 genotype of the mumps virus.
  • The Spanish-born population experienced a disproportionately higher incidence of mumps.
  • A significant proportion of mumps cases occurred in individuals who had been vaccinated, highlighting potential challenges in achieving herd immunity.

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