Emerging Infectious Diseases (Oct 2022)

Early Estimates of Monkeypox Incubation Period, Generation Time, and Reproduction Number, Italy, May–June 2022

  • Giorgio Guzzetta,
  • Alessia Mammone,
  • Federica Ferraro,
  • Anna Caraglia,
  • Alessia Rapiti,
  • Valentina Marziano,
  • Piero Poletti,
  • Danilo Cereda,
  • Francesco Vairo,
  • Giovanna Mattei,
  • Francesco Maraglino,
  • Giovanni Rezza,
  • Stefano Merler

DOI
https://doi.org/10.3201/eid2810.221126
Journal volume & issue
Vol. 28, no. 10
pp. 2078 – 2081

Abstract

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We analyzed the first 255 PCR-confirmed cases of monkeypox in Italy in 2022. Preliminary estimates indicate mean incubation period of 9.1 (95% CI 6.5–10.9) days, mean generation time of 12.5 (95% CI 7.5–17.3) days, and reproduction number among men who have sex with men of 2.43 (95% CI 1.82–3.26).

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