A good part of the doubts and uncertainties that have been raised by the de-escalation plan articulated by the Government to gradually get out of de-confinement are due both to the lack of transparency in technical criteria and the absence of a roadmap with reliable information . Calibrating the real impact of the disease on the Spanish population is essential. Hence the ideology of the seroprevalence study launched by the health authorities. This report comes very late, when the country is already facing a staggered return to normality. The Government of Pedro Sánchez goes blind. He was blind at the beginning of the epidemic, with a slow and delayed reaction that forced drastic decisions to be improvised. And it continues to go blind now, despite available medical information and despite the weeks that have passed since the outbreak of the pandemic.

The first results of the aforementioned study have increased concern among citizens. Only a small proportion of Spaniards - just 5% - would have suffered from the coronavirus . This figure varies greatly depending on the provinces, although it is still very far from the percentage that would guarantee group immunity. The vast majority of citizens, therefore, remain vulnerable. In any case, it is advisable to take these provisional results with caution. First, because they collect the conclusions of rapid tests - serological tests are for later. And second, because they only concern the first two weeks of the eight that the survey covers. It is true that the work has an adequate methodology and also a sampling -60,000 citizens-, chosen by the INE. A number, in principle, sufficient to measure the actual number of infected and the evolution of the epidemic. But it is worth highlighting some major error, such as the exclusion of residences in the tests, insofar as only family units will be practiced. This will prevent focusing on one of the epicenters of the pandemic.

In any case, the seroprevalence study should have been launched much earlier . It remains to be seen the effectiveness of the phase plan and the lack of segregation by regions authorized by the Executive. Health requires the autonomous communities to reinforce primary care to guarantee the early detection - through PCR tests - of the virus, but it continues without arbitrating a regulation to be able to subject Covid-19 patients to compulsory isolation and also to quarantine forced on all your contacts. It is urgent to establish a real map of infections to limit the transmission of the coronavirus and, above all, avoid having to adopt a severe confinement in the event of a possible outbreak of infections.

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