The INSA weekly report on the evolution of Covid-19 advances that the average of the Rt - which estimates the number of secondary cases of infection resulting from each person carrying the virus - has dropped slightly from 1.03 to 1.00 at the national level.
The institute's data also indicate that three regions have this indicator above the threshold of 1.00, as is the case of the Algarve (1.12), the Azores (1.27), and Madeira (1.34).
The North has an Rt of 0.98, the Centre of 0.96, Lisbon and Vale do Tejo of 1.00, and the Alentejo of 0.93.
INSA recalls that, with the end of the state of alert on 30 September in mainland Portugal, and with the consequent reduction in testing for Covid-19, “there was a sharp drop in the Rt to 0.63 on 06 October”, a value they recognise might not correspond to an actual decrease.
The report also mentions that the average number of cases within five days has dropped from 845 to 749 daily infections in Portugal, being lower in mainland Portugal (626).