It is already evident that the variant identified in the United Kingdom, which is more contagious than the original Wuhan variant, is spreading throughout Catalonia. Unfortunately, we cannot be surprised that this is the case. In areas such as Garrotxa, Pla de l'Estany and Gironès the evidence is beginning to be worrying. It is suspected that the Vall d'Aran could be in the same situation, but there is still no reliable data. To a lesser extent, it is also happening in the Vallès Occidental, Vallès Oriental and Baix Llobregat. Specifically, in Banyoles 50% of the wastewater samples are of this variant, and 30% in Olot. In the Besòs wastewater treatment plant, the largest in the state, the characteristic gene of this mutation already makes up 15%. In Barcelona city, 9% of the samples analysed are of the British variant. Thus, given its rapid spread - its spread around Catalonia has occurred in just 20 days - all precautions are few. The residences and hospitals where it has penetrated have painfully experienced how the protection protocols hitherto in force have fallen short. It has caught them unawares because, despite complying with the restrictions, they have been left vulnerable. Therefore, there is no choice but to redouble vigilance with stricter measures, and it must be done urgently, preventively, without waiting to detect more cases. It is time to opt for safer masks, for a more intensive maintenance of air conditioners, for more natural ventilation where it is not counterproductive, for fewer visits and maximum control of these visits ... It would be necessary, in this sense, that the Department of Health of the Generalitat give clear instructions and adequate means to deal with this variant. And not only this, because on Wednesday the first case of the South African variant was detected, which, like the British variant, is also more contagious. We cannot exclude that cases of the Brazilian variant will also be detected in time.