Correction to: BMC Infect Dis (2021) 21:696 https://doi.org/10.1186/s12879-021-06387-y

Following the publication of the original article [1], some errors were identified in the text and in Table 1:

The sentences currently read:

  • the systematic monitoring of phone calls made to health services could have limited the outbreak from 18,500 cases to approximately 2300 cases by detecting the outbreak approximately six days earlier than actually detected

The sentence should read:

  • the systematic monitoring of phone calls made to health services could have limited the outbreak from 18,500 cases to approximately 2300 cases by detecting the outbreak approximately 2.5 months earlier than actually detected.

Furthermore, the correct Table 1 is given in this Correction article.

Table 1 Synthesis of data from the included articles (n = 18)

The original article [1] has been corrected.