Reemergence of Dengue in Southern Texas, 2013

Emerg Infect Dis. 2016 Jun;22(6):1002-7. doi: 10.3201/eid2206.152000.


During a dengue epidemic in northern Mexico, enhanced surveillance identified 53 laboratory-positive cases in southern Texas; 26 (49%) patients acquired the infection locally, and 29 (55%) were hospitalized. Of 83 patient specimens that were initially IgM negative according to ELISA performed at a commercial laboratory, 14 (17%) were dengue virus positive by real-time reverse transcription PCR performed at the Centers for Disease Control and Prevention. Dengue virus types 1 and 3 were identified, and molecular phylogenetic analysis demonstrated close identity with viruses that had recently circulated in Mexico and Central America. Of 51 household members of 22 dengue case-patients who participated in household investigations, 6 (12%) had been recently infected with a dengue virus and reported no recent travel, suggesting intrahousehold transmission. One household member reported having a recent illness consistent with dengue. This outbreak reinforces emergence of dengue in southern Texas, particularly when incidence is high in northern Mexico.

Keywords: Dengue; Texas; United States; dengue virus; outbreak; reemergence; vector-borne infections; viruses.

Publication types

  • Historical Article

MeSH terms

  • Communicable Diseases, Emerging / epidemiology*
  • Communicable Diseases, Emerging / history
  • Communicable Diseases, Emerging / transmission
  • Communicable Diseases, Emerging / virology*
  • Dengue / epidemiology*
  • Dengue / history
  • Dengue / virology*
  • Dengue Virus / classification
  • Dengue Virus / genetics*
  • Family Characteristics
  • Female
  • Genes, Viral
  • History, 21st Century
  • Humans
  • Male
  • Mexico
  • Phylogeny
  • Risk Factors
  • Texas / epidemiology
  • Travel