Monitoring of Redlines for Covid-19 - Update no 26 - 24th September 2021

On  24th September 2021 the Directorate-General for Health (DGS) and the National Institute of Health Doutor Ricardo Jorge (INSA) release report No.26 on monitoring the red lines for COVID-19. The report includes the various indicators described in the Red Lines document, namely the 14-day incidence and the transmissibility index (Rt), national and by health region. From this report, the following points are highlighted:

  • The number of new cases of infection by SARS-CoV-2 / COVID-19, per 100,000 inhabitants, accumulated in the last 14 days, was 125 cases, with a decreasing trend at the national level.
  • No region had an incidence above the threshold of 480 cases in 14 days per 100,000 population.
  • In the age group 65 years or older, the number of new cases of infection by SARS-CoV-2 / COVID-19, per 100,000 inhabitants, accumulated in the last 14 days, was 86 cases, with a stable trend towards decreasing at the national level.
  • OR(t) has a value of less than 1, indicating a decreasing trend in the incidence of SARS-CoV-2 infections nationally (0.83) and in all regions.
  • The number of COVID-19 cases admitted to Intensive Care Units (ICU) on the continent showed a decreasing trend, corresponding to 29% (in the previous week it was 40%) of the defined critical value of 255 occupied beds.
  • Nationally, the proportion of positive tests for SARS-CoV-2 was 1.6% (in the previous week was 1.9%), which is below the defined threshold of 4.0%.
  • There was a decrease in the number of tests for detection of SARS-CoV-2 performed in the last seven days.
  • The proportion of confirmed cases reported late was 8.1% (last week it was 5.5%), remaining below the threshold of 10.0%.
  • In the last seven days, 91% of cases of SARS-CoV-2 / COVID-19 infection were isolated within 24 hours of notification and, in the same period, all contacts in 84 were tracked and isolated when necessary. % of cases.
  • The Delta variant (B.1.617.2), originally associated with India, is the dominant variant in all regions, with a relative frequency of 100% of cases evaluated in week 36/2021 (September 6th to 12th) in Portugal.
  • The specific mortality due to COVID-19 (9.8 deaths in 14 days per 1 000 000 inhabitants) shows a decreasing trend, which reveals a reduced impact of the pandemic in terms of mortality due to COVID-19 (less than 10 deaths per million in 14 days).
  • The analysis of the different indicators reveals an epidemic activity of SARS-CoV-2 infection of moderate intensity, with a decreasing trend at the national level, as well as a decreasing trend in pressure on health services and in mortality from COVID-19.


Full Report in Portuguese here

Defines the indicators related to risk assessment and monitoring of the COVID-19 pandemic, according to which the measures provided for in articles 35 and 36 of the Resolution of the Council of Ministers no. 101-A/2021 may be applicable, of July 30th

Download in informal English here


Strategy of lifting containment measures in the context of controlling Covid-19 – Council of Ministers Resolution 70-B/2021 dated 4th June 2021  Download in informal English here