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Category: Covid-19 (en)

First RCT on masks in the face of this pandemic

19 de Novembro, 2020 / Nuno Machado / ,
The first RCT study published on masks in the context of this pandemic found no statistically significant differences regarding the protection of their users. Historical background For decades research has

TRL says health authorities have no power to impose confinement and questions tests reliability

19 de Novembro, 2020 / Susana Esteves / ,
The health authorities do not have ‘the power or the legitimacy to deprive any person of his liberty’, the Lisbon Court of Appeal held that the confinement imposed by the

Masks in the community: Are we following the science?

17 de Novembro, 2020 / Nuno Machado / , ,
The usefulness of masks in the prevention of respiratory diseases is something very intuitive. If we want to prevent any agent from infecting us, putting something in front of our

Collateral damages of a lockdown

17 de Novembro, 2020 / Susana Esteves /
After the so-called first wave, many countries gave assurances that they would not use lockdowns again as a strategy to combat Covid-19, because of the strong economic and social impact

How Long Does Immunity Last After COVID-19?

17 de Novembro, 2020 / Nuno Machado /
There are currently four identified coronaviruses in circulation. Knowledge about the re-infection process with these endemic viruses may reveal characteristics common to all human coronaviruses. It is generally assumed that

68% of the excess deaths by natural causes were non-Covid

17 de Novembro, 2020 / Susana Esteves / , ,
Sixty-eight per cent of excess mortality (MS) due to natural causes in Portugal is associated with non-Covid-19 deaths. According to an analysis made by the National School of Public Health

What is a Covid case? What do the numbers tell us?

17 de Novembro, 2020 / Nuno Machado /
Is it correct to classify positive test cases as “new infections”? What do the numbers tell us? In the previous article on the Covid-19 cases we talked about the doubts

What is a Covid case? The false positives and the non-infectious positives

16 de Novembro, 2020 / Nuno Machado / ,
Every day we are informed about the number of new infections by the “new coronavirus”, also known as “Covid-19 cases”. However, do the reported cases all correspond to infected people?

What is a pandemic?

16 de Novembro, 2020 / Nuno Machado /
Pandemic refers to an epidemic that has spread to several countries or continents, generally affecting a large number of people (CDC- Centers for Disease Control and Prevention). or It is

Does it make sense to compare “the Spanish flu of 1918” with the Covid-19 epidemic?

16 de Novembro, 2020 / Nuno Machado / ,
Many articles, statements and videos have compared the current pandemic with the 1918 pandemic, also known as the “Spanish Flu”. They even state that we can learn important lessons about
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